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Kang J, Wang M, Hua P, Wang B. A rare case report: co-occurrence of two types of lung cancer with hamartoma and pulmonary tuberculosis. Front Oncol 2023; 13:1264871. [PMID: 37869098 PMCID: PMC10585360 DOI: 10.3389/fonc.2023.1264871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
With the widespread use of low-dose chest Computed Tomography (CT), lung nodules are being increasingly detected. Common pulmonary conditions such as lung adenocarcinoma, lung squamous cell carcinoma, and tuberculosis are typically diagnosable through imaging examinations. Nevertheless, when multiple types of lung cancer are combined with other benign tumors, how can an accurate diagnosis be made? In this report, we present a rare case of a patient with the simultaneous occurrence of lung adenocarcinoma, lung squamous cell carcinoma, pulmonary tuberculosis, and pulmonary hamartoma, which has not been previously reported. This patient underwent surgical intervention in the Department of Thoracic Surgery at the Second Hospital of Jilin University and has now fully recovered and been discharged. The patient's preoperative positron emission tomography-CT(PET-CT)results did not align with the postoperative pathological diagnosis. The imaging findings were atypical, and the pathological diagnosis was exceptionally rare. We share this case report to contribute to the accumulation of clinical experience.
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Affiliation(s)
| | | | - Peiyan Hua
- Department of Thoracic of the Second Hospital of Jilin University, Changchun, Jilin, China
| | - Bin Wang
- Department of Thoracic of the Second Hospital of Jilin University, Changchun, Jilin, China
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Susam S, Çinkooğlu A, Ceylan KC, Gürsoy S, Kömürcüoğlu BE, Mertoğlu A, Çırak AK, Gayaf M, Güldaval F, Tuksavul F, Polat G, Ataman S, Yıldırım E, Koparal H, Yücel N. Comparison of Brock University, Mayo Clinic and Herder models for pretest probability of cancer in solid pulmonary nodules. THE CLINICAL RESPIRATORY JOURNAL 2022; 16:740-749. [DOI: 10.1111/crj.13546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/12/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Seher Susam
- Department of Radiology, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Akın Çinkooğlu
- Department of Radiology, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Kenan Can Ceylan
- Department of Thoracic Surgery, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Soner Gürsoy
- Department of Thoracic Surgery, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Berna Eren Kömürcüoğlu
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Aydan Mertoğlu
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Ali Kadri Çırak
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Mine Gayaf
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Filiz Güldaval
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Fevziye Tuksavul
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Gülru Polat
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Sena Ataman
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Eylem Yıldırım
- Department of Chest Disease, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Hakan Koparal
- Department of Nuclear Medicine, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
| | - Nur Yücel
- Department of Pathology, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital Health Sciences University Izmir Turkey
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Banach A, King F, Masaki F, Tsukada H, Hata N. Visually Navigated Bronchoscopy using three cycle-Consistent generative adversarial network for depth estimation. Med Image Anal 2021; 73:102164. [PMID: 34314953 PMCID: PMC8453111 DOI: 10.1016/j.media.2021.102164] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 06/29/2021] [Accepted: 07/06/2021] [Indexed: 11/30/2022]
Abstract
[Background] Electromagnetically Navigated Bronchoscopy (ENB) is currently the state-of-the art diagnostic and interventional bronchoscopy. CT-to-body divergence is a critical hurdle in ENB, causing navigation error and ultimately limiting the clinical efficacy of diagnosis and treatment. In this study, Visually Navigated Bronchoscopy (VNB) is proposed to address the aforementioned issue of CT-to-body divergence. [Materials and Methods] We extended and validated an unsupervised learning method to generate a depth map directly from bronchoscopic images using a Three Cycle-Consistent Generative Adversarial Network (3cGAN) and registering the depth map to preprocedural CTs. We tested the working hypothesis that the proposed VNB can be integrated to the navigated bronchoscopic system based on 3D Slicer, and accurately register bronchoscopic images to pre-procedural CTs to navigate transbronchial biopsies. The quantitative metrics to asses the hypothesis we set was Absolute Tracking Error (ATE) of the tracking and the Target Registration Error (TRE) of the total navigation system. We validated our method on phantoms produced from the pre-procedural CTs of five patients who underwent ENB and on two ex-vivo pig lung specimens. [Results] The ATE using 3cGAN was 6.2 +/- 2.9 [mm]. The ATE of 3cGAN was statistically significantly lower than that of cGAN, particularly in the trachea and lobar bronchus (p < 0.001). The TRE of the proposed method had a range of 11.7 to 40.5 [mm]. The TRE computed by 3cGAN was statistically significantly smaller than those computed by cGAN in two of the five cases enrolled (p < 0.05). [Conclusion] VNB, using 3cGAN to generate the depth maps was technically and clinically feasible. While the accuracy of tracking by cGAN was acceptable, the TRE warrants further investigation and improvement.
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Affiliation(s)
- Artur Banach
- National Center for Image-guided Therapy, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States; QUT Centre for Robotics, Queensland University of Technology, Brisbane, Australia.
| | - Franklin King
- National Center for Image-guided Therapy, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Fumitaro Masaki
- National Center for Image-guided Therapy, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States; Healthcare Optics Research Laboratory, Canon U.S.A., Cambridge, MA, United States
| | - Hisashi Tsukada
- Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Nobuhiko Hata
- National Center for Image-guided Therapy, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
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SEMİRGİN SU, BIÇAKÇI N. Soliter Pulmoner Nodüllerin Değerlendirilmesi: Malign Lezyonların Ayırıcı Tanısında F-18 FDG PET/BT’ Nin Tanısal Değeri. DICLE MEDICAL JOURNAL 2020. [DOI: 10.5798/dicletip.706135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Susam S, Çinkooğlu A, Ceylan KC, Gürsoy S, Kömürcüoğlu BE, Mertoğlu A, Çırak AK, Tuksavul F, Gayaf M, Güldaval F, Polat G, Yıldırım E, Koparal H, Yücel N. Diagnostic success of transthoracic needle biopsy and PET-CT for 1 to 2 cm solid indeterminate pulmonary nodules. CLINICAL RESPIRATORY JOURNAL 2020; 14:453-461. [PMID: 31922654 DOI: 10.1111/crj.13152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 10/25/2019] [Accepted: 01/05/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Among the nodule types, the most controversial group are indeterminate solid nodules from 1 to 2 cm in size with the first choice being transthoracic needle biopsy (TTNB) or positron emission tomography (PET-CT) or both methods together. However, no single diagnostic algorithm could be applied to all cases. This research discusses the diagnostic success of PET-CT and TTNB. MATERIALS AND METHODS 407 Patients who referred to our hospital for any reason, with solid nodules with the size from 1 to 2 cmincidentally identified on the thoracic CT tests were investigated. Among the patients who underwent biopsy, 312 cases had PET-CT, and maximum SUV (SUVmax) values of the nodules were examined. Values of ≥2.5 were accepted as hypermetabolic. RESULTS The mean age of the patients was 61 ± 10.8 years. 84 patients were female (20.6%) and 323 were male (79.4%). For TTNB; sensitivity, specificity and accuracy rates of all cases, who were correctly diagnosed, were 76.9%, 83.3% and 78.9%, respectively (P < .001). The 2.5 SUVmax cutoff value had sensitivity of 91%, specificity of 35.6%, accuracy of 75% (P = .034). The cutoff value of 49 years of age, nodule size of 16.4 mm, gender and 2.5 SUVmax value had high accuracy for benign-malignant differentiation. No statistically significant difference was found in the upper lobe localization of nodule. CONCLUSION A positive result from TTNB is a reliable finding; however, a negative result is not definitive. The high negative predictive value of PET-CT is effective in preventing the unnecessary biopsies and surgical procedures.
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Affiliation(s)
- Seher Susam
- Radiology Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Akın Çinkooğlu
- Radiology Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Kenan Can Ceylan
- Thorasic Surgery Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Soner Gürsoy
- Thorasic Surgery Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Berna Eren Kömürcüoğlu
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Aydan Mertoğlu
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Ali Kadri Çırak
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Fevziye Tuksavul
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Mine Gayaf
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Filiz Güldaval
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Gülru Polat
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Eylem Yıldırım
- Chest Disease Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Hakan Koparal
- Nuclear Medicine Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Nur Yücel
- Pathology Department, Dr. Suat Seren Chest Disease and Thoracic Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
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Qian K, Deng Y, Shen C, Feng YG, Deng B, Tan QY. Combination of electromagnetic navigation bronchoscopy-guided biopsy with a novel staining for peripheral pulmonary lesions. World J Surg Oncol 2019; 17:158. [PMID: 31506081 PMCID: PMC6737641 DOI: 10.1186/s12957-019-1704-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 09/05/2019] [Indexed: 11/18/2022] Open
Abstract
Background The diagnosis of peripheral pulmonary lesions (PPLs) is a challenging task for pulmonologists, especially for small PPLs. Conventional localization of these small PPLs, which are > 1 cm away from the visceral pleura in operation, is quite difficult. Currently used methods inevitably damage the visceral pleura and may cause a series of complications, such as pneumothorax and hemothorax. Hence, the present study aimed to find out an intraoperative localization method with no damage to the visceral pleura. Methods We retrospectively reviewed 21 patients with PLLs who underwent electromagnetic navigation bronchoscopy (ENB)-guided biopsy plus a new methylene blue staining with the help of massage (Massage Staining) in our department between August 2017 and December 2018. Results The median age of these 21 patients was 51.3 ± 2.1 years. The diameter of the PPLs was 8.2 ± 2.3 mm. The rate of successful biopsy was 76.2%, and the rate of excellent or satisfactory of Massage Staining was 81.0%, while all lesions of these 21 cases were included in the range of staining, and the median distance from the edge of the stained site to the edge of the lesion was 29 ± 18 mm. The duration of ENB-guided biopsy plus Massage Staining was 26.7 ± 5.3 min, and the intraoperative blood loss was 3.3 ± 1.5 ml. No pneumothorax, hemorrhage, and tracheal injury occurred intraoperatively. Conclusions The ENB-guided biopsy combined with Massage Staining is an innovative one-stop strategy designed to enhance the precision of thoracic surgery. The Massage Staining avoids damage to the visceral pleura, causes the low incidence of complications, but yields precise localization of PPLs.
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Affiliation(s)
- Kai Qian
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
| | - Yi Deng
- Department of Oncology, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
| | - Cheng Shen
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
| | - Yong-Geng Feng
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
| | - Bo Deng
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China.
| | - Qun-You Tan
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China.
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A Novel Computer-Aided Diagnosis Scheme on Small Annotated Set: G2C-CAD. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6425963. [PMID: 31119180 PMCID: PMC6500711 DOI: 10.1155/2019/6425963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 03/05/2019] [Indexed: 11/18/2022]
Abstract
Purpose Computer-aided diagnosis (CAD) can aid in improving diagnostic level; however, the main problem currently faced by CAD is that it cannot obtain sufficient labeled samples. To solve this problem, in this study, we adopt a generative adversarial network (GAN) approach and design a semisupervised learning algorithm, named G2C-CAD. Methods From the National Cancer Institute (NCI) Lung Image Database Consortium (LIDC) dataset, we extracted four types of pulmonary nodule sign images closely related to lung cancer: noncentral calcification, lobulation, spiculation, and nonsolid/ground-glass opacity (GGO) texture, obtaining a total of 3,196 samples. In addition, we randomly selected 2,000 non-lesion image blocks as negative samples. We split the data 90% for training and 10% for testing. We designed a DCGAN generative adversarial framework and trained it on the small sample set. We also trained our designed CNN-based fuzzy Co-forest on the labeled small sample set and obtained a preliminary classifier. Then, coupled with the simulated unlabeled samples generated by the trained DCGAN, we conducted iterative semisupervised learning, which continually improved the classification performance of the fuzzy Co-forest until the termination condition was reached. Finally, we tested the fuzzy Co-forest and compared its performance with that of a C4.5 random decision forest and the G2C-CAD system without the fuzzy scheme, using ROC and confusion matrix for evaluation. Results Four different types of lung cancer-related signs were used in the classification experiment: noncentral calcification, lobulation, spiculation, and nonsolid/ground-glass opacity (GGO) texture, along with negative image samples. For these five classes, the G2C-CAD system obtained AUCs of 0.946, 0.912, 0.908, 0.887, and 0.939, respectively. The average accuracy of G2C-CAD exceeded that of the C4.5 random decision tree by 14%. G2C-CAD also obtained promising test results on the LISS signs dataset; its AUCs for GGO, lobulation, spiculation, pleural indentation, and negative image samples were 0.972, 0.964, 0.941, 0.967, and 0.953, respectively. Conclusion The experimental results show that G2C-CAD is an appropriate method for addressing the problem of insufficient labeled samples in the medical image analysis field. Moreover, our system can be used to establish a training sample library for CAD classification diagnosis, which is important for future medical image analysis.
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Lamb CR, Whitlock J, Foster‐Yeow ATL. Prevalence of pulmonary nodules in dogs with malignant neoplasia as determined by CT. Vet Radiol Ultrasound 2019; 60:300-305. [DOI: 10.1111/vru.12723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 12/05/2018] [Accepted: 12/13/2018] [Indexed: 11/30/2022] Open
Affiliation(s)
- Christopher R. Lamb
- Department of Clinical Sciences and ServicesThe Royal Veterinary College Hertfordshire United Kingdom
| | - James Whitlock
- Department of Clinical Sciences and ServicesThe Royal Veterinary College Hertfordshire United Kingdom
| | - Andrew T. L. Foster‐Yeow
- Department of Clinical Sciences and ServicesThe Royal Veterinary College Hertfordshire United Kingdom
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Wagner AK, Hapich A, Psychogios MN, Teichgräber U, Malich A, Papageorgiou I. Computer-Aided Detection of Pulmonary Nodules in Computed Tomography Using ClearReadCT. J Med Syst 2019; 43:58. [PMID: 30706143 DOI: 10.1007/s10916-019-1180-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 01/22/2019] [Indexed: 12/19/2022]
Abstract
This study evaluates the accuracy of a computer-aided detection (CAD) application for pulmonary nodular lesions (PNL) in computed tomography (CT) scans, the ClearReadCT (Riverain Technologies). The study was retrospective for 106 biopsied PNLs from 100 patients. Seventy-five scans were Contrast-Enhanced (CECT) and 25 received no enhancer (NECT). Axial reconstructions in soft-tissue and lung kernel were applied at three different slice thicknesses, 0.75 mm (CECT/NECT n = 25/6), 1.5 mm (n = 18/9) and 3.0 mm (n = 43/18). We questioned the effect of (1) enhancer, (2) kernel and (3) slice thickness on the CAD performance. Our main findings are: (1) Vessel suppression is effective and specific in both NECT and CECT. (2) Contrast enhancement significantly increased the CAD sensitivity from 60% in NECT to 80% in CECT, P = 0.025 Fischer's exact test. (3) The CAD sensitivity was 84% in 3 mm slices compared to 68% in 0.75 mm slices, P > 0.2 Fischer's exact test. (4) Small lesions of low attenuation were detected with higher sensitivity. (5) Lung kernel reconstructions increased the false positive rate without affecting the sensitivity (P > 0.05 McNemar's test). In conclusion, ClearReadCT showed an optimized sensitivity of 84% and a positive predictive value of 67% in enhanced lung scans with thick, soft kernel reconstructions. NECT, thin slices and lung kernel reconstruction were associated with inferior performance.
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Affiliation(s)
- Anne-Kathrin Wagner
- Institute of Diagnostic and Interventional Radiology, University Hospital Jena, Am Klinikum 1, 07747, Jena, Germany.,Institute of Radiology, Südharz Hospital Nordhausen, Dr.-Robert-Koch street 39, 99734, Nordhausen, Germany
| | - Arno Hapich
- Department of Thoracic Surgery, Südharz Hospital Nordhausen, Dr.-Robert-Koch street 39, 99734, Nordhausen, Germany
| | - Marios Nikos Psychogios
- Institute of Diagnostic and Interventional Neuroradiology, University Medicine Göttingen, Robert Koch street 40, 37075, Göttingen, Germany
| | - Ulf Teichgräber
- Institute of Diagnostic and Interventional Radiology, University Hospital Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Ansgar Malich
- Institute of Radiology, Südharz Hospital Nordhausen, Dr.-Robert-Koch street 39, 99734, Nordhausen, Germany
| | - Ismini Papageorgiou
- Institute of Diagnostic and Interventional Radiology, University Hospital Jena, Am Klinikum 1, 07747, Jena, Germany. .,Institute of Radiology, Südharz Hospital Nordhausen, Dr.-Robert-Koch street 39, 99734, Nordhausen, Germany.
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Qian K, Feng Y, Wang R, Deng B, Tan Q. [Application of Electromagnetic Navigation Bronchoscopic Biopsy Combined with
Massage Staining in Diagnosis and Treatment of Peripheral Pulmonary Lesion]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2019; 22:15-19. [PMID: 30674388 PMCID: PMC6348156 DOI: 10.3779/j.issn.1009-3419.2019.01.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Electromagnetic navigation bronchoscopy (ENB) has become the latest minimally invasive diagnostic and therapeutic technique due to its characteristics, e.g., non-invasion, accuracy, real-time positioning. In this study, we investigated the application of ENB biopsy combined with Massage staining in the diagnosis and treatment of peripheral pulmonary lesions (PPL). METHODS The clinical data of 15 PPL patients undergoing ENB biopsy plus Massage staining between August 2017 and January 2018 were retrospectively reviewed. Among them, there were 12 male and 3 female, and the mean age was (51.3±2.1) years old. RESULTS The diameter of PPLs ranged from 6 mm to 36 mm (mean: 14.0 mm). The successful biopsy rate was 66.7%. All patients successfully underwent Massage staining. The distance between the centers of staining and lesion was (1.0±0.4) cm, and the diameter of staining was (2.8±0.6) cm. The mean operation time was (26.7±5.3 ) min, and the mean blood loss during surgery was (3.3±1.5) mL. There was no pneumothorax, hemothorax and pulmonary vascular injury during the procedure. CONCLUSIONS The ENB biopsy plus Massage staining technique caused very few complications, and provided high precision, which warrants further application.
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Affiliation(s)
- Kai Qian
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Yonggeng Feng
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Ruwen Wang
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Bo Deng
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Qunyou Tan
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China
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Dandıl E. A Computer-Aided Pipeline for Automatic Lung Cancer Classification on Computed Tomography Scans. JOURNAL OF HEALTHCARE ENGINEERING 2018; 2018:9409267. [PMID: 30515286 PMCID: PMC6236771 DOI: 10.1155/2018/9409267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/24/2018] [Accepted: 10/08/2018] [Indexed: 11/17/2022]
Abstract
Lung cancer is one of the most common cancer types. For the survival of the patient, early detection of lung cancer with the best treatment method is crucial. In this study, we propose a novel computer-aided pipeline on computed tomography (CT) scans for early diagnosis of lung cancer thanks to the classification of benign and malignant nodules. The proposed pipeline is composed of four stages. In preprocessing steps, CT images are enhanced, and lung volumes are extracted from the image with the help of a novel method called lung volume extraction method (LUVEM). The significance of the proposed pipeline is using LUVEM for extracting lung region. In nodule detection stage, candidate nodules are determined according to the circular Hough transform- (CHT-) based method. Then, lung nodules are segmented with self-organizing maps (SOM). In feature computation stage, intensity, shape, texture, energy, and combined features are used for feature extraction, and principal component analysis (PCA) is used for feature reduction step. In the final stage, probabilistic neural network (PNN) classifies benign and malign nodules. According to the experiments performed on our dataset, the proposed pipeline system can classify benign and malign nodules with 95.91% accuracy, 97.42% sensitivity, and 94.24% specificity. Even in cases of small-sized nodules (3-10 mm), the proposed system can determine the nodule type with 94.68% accuracy.
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Affiliation(s)
- Emre Dandıl
- Department of Computer Engineering, Faculty of Engineering, Bilecik Seyh Edebali University, Gulumbe Campus, 11210 Bilecik, Turkey
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Divisi D, Barone M, Bertolaccini L, Zaccagna G, Gabriele F, Crisci R. Diagnostic performance of fluorine-18 fluorodeoxyglucose positron emission tomography in the management of solitary pulmonary nodule: a meta-analysis. J Thorac Dis 2018; 10:S779-S789. [PMID: 29780624 DOI: 10.21037/jtd.2017.12.126] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background In the setting of solitary pulmonary nodules (SPNs), fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG-PET/CT) is considered a useful non-invasive diagnostic tool though false positive (FP) and false negative (FN) results affects accuracy due to different conditions, such as inflammatory diseases or low-uptake neoplasms. Aim of this study is to evaluate overall diagnostic performance of 18F-FDG-PET/CT for malignant pulmonary nodules. Methods A computerized research, including published articles from 2012 and 2017, was carried out. 18F-FDG-PET/CT overall sensitivity (Se), specificity (Spe), positive likelihood ratio (PLR), negative likelihood ratio (NLR), positive predictive value (PPV), negative predictive value (NPV), diagnostic index and odds ratio were pooled. No selection-bias were found according to asymmetry test. Results A total of twelve studies were included in the meta-analysis. The pooled Se, Spe, PLR, NLR, PPV, NPV and accuracy index (AI) with relative 95% confidence intervals (CI) were 0.819 (95% CI: 0.794-0.843), 0.624 (95% CI: 0.582-0.665), 2.190 (95% CI: 1.950-2.440), 0.290 (95% CI: 0.250-0.330), 0.802 (95% CI: 0.783-0.819), 0.652 (95% CI: 0.618-0.684) and 0.649 (95% CI: 0.625-0.673), respectively. The diagnostic odds ratio (DOR) was 7.049 with a relative 95% CI between 5.550 and 8.944. Conclusions The results suggest 18F-FDG-PET/CT has good diagnostic accuracy in SPNs evaluation; but, it should not be considered as a discriminatory test rather than a method to be included in a clinical and diagnostic pathway.
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Affiliation(s)
- Duilio Divisi
- Thoracic Surgery Unit, University of L'Aquila, "G. Mazzini" Hospital, Teramo Italy
| | - Mirko Barone
- Thoracic Surgery Unit, University of L'Aquila, "G. Mazzini" Hospital, Teramo Italy
| | | | - Gino Zaccagna
- Thoracic Surgery Unit, University of L'Aquila, "G. Mazzini" Hospital, Teramo Italy
| | - Francesca Gabriele
- Thoracic Surgery Unit, University of L'Aquila, "G. Mazzini" Hospital, Teramo Italy
| | - Roberto Crisci
- Thoracic Surgery Unit, University of L'Aquila, "G. Mazzini" Hospital, Teramo Italy
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13
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Ohno Y, Kauczor HU, Hatabu H, Seo JB, van Beek EJR. MRI for solitary pulmonary nodule and mass assessment: Current state of the art. J Magn Reson Imaging 2018; 47:1437-1458. [PMID: 29573050 DOI: 10.1002/jmri.26009] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 02/26/2018] [Indexed: 12/14/2022] Open
Abstract
Since the clinical introduction of magnetic resonance imaging (MRI), the chest has been one of its most challenging applications, and many physicists and radiologists have tried since the 1980s to use MR for assessment of different lung diseases as well as mediastinal and pleural diseases. Since then, however, technical advances in sequencing, scanners, and coils, adaptation of parallel imaging techniques, utilization of contrast media, and development of postprocessing tools have been reported by many basic and clinical researchers. As a result, state-of-the-art thoracic MRI is now substituted for traditional imaging techniques and/or plays a complementary role in the management of patients with various chest diseases, and especially in the detection of pulmonary nodules and in thoracic oncology. In addition, MRI has continued to be developed to help overcome the limitations of computed tomography (CT) and nuclear medicine examinations. It can currently provide not only morphological, but also functional, physiological, pathophysiological, and molecular information at 1.5T with a gradual shift from 1.5T to 3T MR systems. In this review, we focus on these recent advances in MRI for pulmonary nodule detection and pulmonary nodule and mass evaluation by using noncontrast-enhanced and contrast-enhanced techniques as well as new molecular imaging methods such as chemical exchange saturation transfer imaging for a comparison with other modalities such as single or multidetector row CT, 18F-fluoro-2-deoxyglucose positron emission tomography (FDG-PET), and/or PET/CT. LEVEL OF EVIDENCE 4 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2018;47:1437-1458.
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Affiliation(s)
- Yoshiharu Ohno
- Division of Functional and Diagnostic Imaging Research, Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.,Advanced Biomedical Imaging Research Center, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Hans-Ulrich Kauczor
- Diagnostic and Interventional Radiology, University Medical Center Heidelberg, Translational Lung Research Center/German Center of Lung Research, Heidelberg, Germany
| | - Hiroto Hatabu
- Center for Pulmonary Functional Imaging, Department of Radiology, Brigham and Women's Hospital, Boston and Harvard Medical School, Boston, Massachusetts, USA
| | - Joon Beom Seo
- Department of Radiology, University of Ulsan College of Medicine, Seoul, Korea.,Division of Cardiothoracic Radiology, Department of Radiology, Asan Medical Center, Seoul, Korea
| | - Edwin J R van Beek
- Edinburgh Imaging, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
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Xia Z, Qiao K, He J. Recent advances in the management of pulmonary tuberculoma with focus on the use of tubeless video-assisted thoracoscopic surgery. J Thorac Dis 2017; 9:3307-3312. [PMID: 29221316 DOI: 10.21037/jtd.2017.08.44] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Pulmonary tuberculoma are benign solitary pulmonary nodules representing up to 25% of all resected solitary pulmonary nodules. However, the differentiation between pulmonary tuberculoma and lung cancer, as well as between active tuberculoma and inactive tuberculoma remains a clinical challenge. The present review summarizes the recent advances in the management of pulmonary tuberculoma, including radiological findings, the response to anti-tuberculosis treatment and surgical treatments. Application of the novel tubeless video-assisted thoracoscopic surgery (VATS) technique in both the diagnosis and treatment of pulmonary tuberculoma has been found to be safe and feasible and leads to less surgical trauma, which results in reduced length of hospitalization and better post-operative quality of life.
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Affiliation(s)
- Zhaohua Xia
- The First Clinical College, Southern Medical University, Guangzhou 510515, China.,Department of Thoracic Surgery, The Third People's Hospital of Shenzhen, Shenzhen 518000, China
| | - Kun Qiao
- Department of Thoracic Surgery, The Third People's Hospital of Shenzhen, Shenzhen 518000, China
| | - Jianxing He
- The First Clinical College, Southern Medical University, Guangzhou 510515, China.,Department of Thoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China.,Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China
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15
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Gibson G, Kumar AR, Steinke K, Bashirzadeh F, Roach R, Windsor M, Ware R, Fielding D. Risk stratification in the investigation of pulmonary nodules in a high-risk cohort: positron emission tomography/computed tomography outperforms clinical risk prediction algorithms. Intern Med J 2017; 47:1385-1392. [PMID: 28782248 DOI: 10.1111/imj.13576] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 07/31/2017] [Accepted: 08/01/2017] [Indexed: 12/26/2022]
Abstract
BACKGROUND Clinical prediction models and 18-fluorine-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG-PET/CT) are used for the assessment of solitary pulmonary nodules (SPN); however, a biopsy is still required before treatment, which carries risk. AIM To determine the combined predictive benefit of one such model combined with modern PET/CT data to improve decision-making about biopsy prior to treatment and possibly reduce costs. METHODS Patients with a SPN undergoing 18F-FDG-PET/CT from January 2011 to December 2012 were retrospectively identified; 143 patients met inclusion criteria. PET/CT studies were rated (5-point visual scale), and CT characteristics were determined. Tissue was obtained by endobronchial ultrasonography with guide sheath (EBUS-GS), CT-guided biopsy and/or surgery. EBUS-transbronchial needle aspiration (TBNA) was used instead of nodule biopsy if there were PET-positive sub-centimetre lymph nodes. RESULTS The prediction model yielded an area under the receiver operating characteristic curve (AUC-ROC) of 64% (95% confidence interval (CI) 0.55-0.75). PET/CT increased this to 75% (95% CI 0.65-0.84). The 11% improvement is statistically significant. PET/CT score was the best single predictor for malignancy. A PET score of 1-2 had a specificity of 100% (CI 0.73-1.0), whereas a score of 4-5 had a sensitivity of only 76% (CI 0.68-0.84). No significant difference in clinical prediction scores between groups was noted. PET/CT showed the greatest benefit in true negatives and in detecting small mediastinal lymph nodes to allow EBUS-TBNA with a higher diagnostic rate. Cost analysis did not support a policy of resection-without-tissue diagnosis. CONCLUSION PET/CT improves the clinical prediction of SPN, but its greatest use is in proving benignity. High PET scores had high false positive rates and did not add to clinical prediction. PET should be incorporated early in decision-making to allow for more effective biopsy strategies.
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Affiliation(s)
- Glenna Gibson
- Department of Radiology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Aravind Ravi Kumar
- Department of Nuclear Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Karin Steinke
- Department of Radiology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Farzad Bashirzadeh
- Department of Thoracic Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Rebecca Roach
- Department of Thoracic Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Morgan Windsor
- Department of Thoracic Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Robert Ware
- School of Population Health, University of Queensland, Brisbane, Queensland, Australia
| | - David Fielding
- Department of Thoracic Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
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16
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Spadafora M, Pace L, Mansi L. Segmental 18F-FDG-PET/CT in a single pulmonary nodule: a better cost/effectiveness strategy. Eur J Nucl Med Mol Imaging 2017; 44:1-4. [PMID: 27695909 DOI: 10.1007/s00259-016-3532-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Marco Spadafora
- Department of Imaging, S.G. Moscati Hospital, Avellino, Italy
| | - Leonardo Pace
- Department of Medicine and Surgery, University of Salerno, Baronissi, SA, Italy
| | - Luigi Mansi
- Dipartimento Medico-Chirurgico di Internistica Clinica e Sperimentale, Second University of Naples, Napoli, Italy.
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Prakashini K, Babu S, Rajgopal KV, Kokila KR. Role of Computer Aided Diagnosis (CAD) in the detection of pulmonary nodules on 64 row multi detector computed tomography. Lung India 2016; 33:391-7. [PMID: 27578931 PMCID: PMC4948226 DOI: 10.4103/0970-2113.184872] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIMS AND OBJECTIVES To determine the overall performance of an existing CAD algorithm with thin-section computed tomography (CT) in the detection of pulmonary nodules and to evaluate detection sensitivity at a varying range of nodule density, size, and location. MATERIALS AND METHODS A cross-sectional prospective study was conducted on 20 patients with 322 suspected nodules who underwent diagnostic chest imaging using 64-row multi-detector CT. The examinations were evaluated on reconstructed images of 1.4 mm thickness and 0.7 mm interval. Detection of pulmonary nodules, initially by a radiologist of 2 years experience (RAD) and later by CAD lung nodule software was assessed. Then, CAD nodule candidates were accepted or rejected accordingly. Detected nodules were classified based on their size, density, and location. The performance of the RAD and CAD system was compared with the gold standard that is true nodules confirmed by consensus of senior RAD and CAD together. The overall sensitivity and false-positive (FP) rate of CAD software was calculated. OBSERVATIONS AND RESULTS Of the 322 suspected nodules, 221 were classified as true nodules on the consensus of senior RAD and CAD together. Of the true nodules, the RAD detected 206 (93.2%) and 202 (91.4%) by the CAD. CAD and RAD together picked up more number of nodules than either CAD or RAD alone. Overall sensitivity for nodule detection with the CAD program was 91.4%, and FP detection per patient was 5.5%. The CAD showed comparatively higher sensitivity for nodules of size 4-10 mm (93.4%) and nodules in hilar (100%) and central (96.5%) location when compared to RAD's performance. CONCLUSION CAD performance was high in detecting pulmonary nodules including the small size and low-density nodules. CAD even with relatively high FP rate, assists and improves RAD's performance as a second reader, especially for nodules located in the central and hilar region and for small nodules by saving RADs time.
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Affiliation(s)
- K Prakashini
- Department of Radiodiagnosis and Imaging, Kasturba Medical College, Manipal University, Manipal, Udupi, Karnataka, India
| | - Satish Babu
- Department of Radiodiagnosis and Imaging, Kasturba Medical College, Manipal University, Manipal, Udupi, Karnataka, India
| | - K V Rajgopal
- Department of Radiodiagnosis and Imaging, Kasturba Medical College, Manipal University, Manipal, Udupi, Karnataka, India
| | - K Raja Kokila
- Consultant Radiologist, Jansons Health (P) Ltd., Erode, Tamil Nadu, India
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Cha MJ, Lee KS, Kim HS, Lee SW, Jeong CJ, Kim EY, Lee HY. Improvement in imaging diagnosis technique and modalities for solitary pulmonary nodules: from ground-glass opacity nodules to part-solid and solid nodules. Expert Rev Respir Med 2016; 10:261-78. [PMID: 26751340 DOI: 10.1586/17476348.2016.1141053] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
With advances in CT technology and the popularity of low-dose CT as a device for lung cancer screening, the detection rate of sub-solid pulmonary nodules as well as solid nodules has been increased. Distinguishing solid from sub-solid features is an essential step in the CT evaluation of solitary pulmonary nodules (SPNs) because strategies for nodule characterization and guidelines for management are different for each category. In addition to conventional CT parameters, numerous novel concepts and modalities have been developed. Although there is currently no single effective method for differentiating malignant from benign nodules, growth rate measurement using volumetry, evaluation of tumor vascularity on dynamic helical CT, dual-energy CT and MRI and physiologic evaluation with PET/CT can all be useful for nodule characterization. New techniques such as tomosynthesis can improve detection over radiography alone. The purpose of this article is to enhance our understanding of the evidence-based strategies involved in diagnosing SPNs.
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Affiliation(s)
- Min Jae Cha
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
| | - Kyung Soo Lee
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
| | - Hyun Su Kim
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
| | - So Won Lee
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
| | - Chae Jin Jeong
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
| | - Eun Young Kim
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
| | - Ho Yun Lee
- a Department of Radiology and Center for Imaging Science , Samsung Medical Center, Sungkyunkwan University School of Medicine , Seoul , Korea
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Meier-Schroers M, Kukuk G, Homsi R, Skowasch D, Schild HH, Thomas D. MRI of the lung using the PROPELLER technique: Artifact reduction, better image quality and improved nodule detection. Eur J Radiol 2015; 85:707-13. [PMID: 26971412 DOI: 10.1016/j.ejrad.2015.12.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 02/08/2023]
Abstract
PURPOSE To evaluate the benefit of the PROPELLER technique (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction, MultiVane, MV) for MR imaging of the lung. MATERIALS AND METHODS 30 Participants of a lung cancer screening program were recruited for the comparison of T2-MV and T2-Fast Spin Echo (FSE) sequences at 1.5T. Two readers evaluated artifacts, image quality, and pulmonary lesions. Artifacts and image quality were rated using a four-point scale. Lesion detection was correlated to low-dose computed tomography (CT). Wilcoxon rank-test for ratings of artifacts and image quality, sensitivity and specificity values for lesion detection, and Cohen's kappa for inter-rater agreement were used. RESULTS The MV sequence showed less pulsation and motion artifacts, and higher image quality (p=0.001 for R1, p=0.002 for R2) than FSE (p<0.001 for both readers, R1 and R2). Inter-rater agreement was excellent for lesion detection (0.84-0.95) and good to excellent for artifacts and image quality (0.66-0.84). 17 patients had lesions <8mm, and 7 had lesions >8mm as seen on CT. For R1 and R2, the MV sequence allowed for higher detection rates of pulmonary lesions <8mm with a sensitivity of 56% (R1) and 59% (R2); the FSE sequence achieved 50% (R1) and 53% (R2). Specificity was also higher for MV with 94% (R1) and 83% (R2) compared to 78% (R1) and 76% (R2). Lesions >8mm were detected with a sensitivity of 100% by both readers on both MV and FSE images. For both readers, specificity for larger lesions was higher on MV images with 100% compared to 96%. CONCLUSION The superior image quality and the very robust artifact reduction make MV a promising technique for MRI of the lung compared to FSE, especially since it is not requiring breathholds. Moreover, MV allows for improved lesion detection.
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Affiliation(s)
| | - Guido Kukuk
- Department of Radiology, University of Bonn, Sigmund-Freud-Str 25, 53127 Bonn, Germany.
| | - Rami Homsi
- Department of Radiology, University of Bonn, Sigmund-Freud-Str 25, 53127 Bonn, Germany.
| | - Dirk Skowasch
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University of Bonn, Germany.
| | - Hans Heinz Schild
- Department of Radiology, University of Bonn, Sigmund-Freud-Str 25, 53127 Bonn, Germany.
| | - Daniel Thomas
- Department of Radiology, University of Bonn, Sigmund-Freud-Str 25, 53127 Bonn, Germany.
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20
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Niesterok C, Piesnack S, Köhler C, Ludewig E, Alef M, Kiefer I. [Computed tomography with computer-assisted detection of pulmonary nodules in dogs and cats]. TIERARZTLICHE PRAXIS. AUSGABE K, KLEINTIERE/HEIMTIERE 2015; 43:381-388. [PMID: 26582331 DOI: 10.15654/tpk-150048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 05/15/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE The aim of this study was to assess the potential benefit of computer-assisted detection (CAD) of pulmonary nodules in veterinary medicine. Therefore, the CAD rate was compared to the detection rates of two individual examiners in terms of its sensitivity and false-positive findings. MATERIALS AND METHODS We included 51 dogs and 16 cats with pulmonary nodules previously diagnosed by computed tomography. First, the number of nodules ≥ 3 mm was recorded for each patient by two independent examiners. Subsequently, each examiner used the CAD software for automated nodule detection. With the knowledge of the CAD results, a final consensus decision on the number of nodules was achieved. The software used was a commercially available CAD program. RESULTS The sensitivity of examiner 1 was 89.2%, while that of examiner 2 reached 87.4%. CAD had a sensitivity of 69.4%. With CAD, the sensitivity of examiner 1 increased to 94.7% and that of examiner 2 to 90.8%. CONCLUSION AND CLINICAL RELEVANCE The CAD-system, which we used in our study, had a moderate sensitivity of 69.4%. Despite its severe limitations, with a high level of false-positive and false-negative results, CAD increased the examiners' sensitivity. Therefore, its supportive role in diagnostics appears to be evident.
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Affiliation(s)
- C Niesterok
- Christian Niesterok, Klinik für Kleintiere, Veterinärmedizinische Fakultät der Universität Leipzig, An den Tierkliniken 23, 04103 Leipzig, E-Mail:
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García Vicente AM, Pérez-García VM, Soriano Castrejón Á. (18)F-fluorodeoxyglucose positron emission tomography/computed tomography characterization of solitary pulmonary nodules: can we do better? J Thorac Dis 2015; 7:E215-8. [PMID: 26380781 DOI: 10.3978/j.issn.2072-1439.2015.08.24] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 08/19/2015] [Indexed: 11/14/2022]
Affiliation(s)
- Ana María García Vicente
- 1 Nuclear Medicine Department, University General Hospital, Ciudad Real, Spain ; 2 Laboratory of Mathematical Oncology, Institute for Applied Mathematics in Science and Engineering, Castilla-La Mancha University, Ciudad Real, Spain
| | - Víctor M Pérez-García
- 1 Nuclear Medicine Department, University General Hospital, Ciudad Real, Spain ; 2 Laboratory of Mathematical Oncology, Institute for Applied Mathematics in Science and Engineering, Castilla-La Mancha University, Ciudad Real, Spain
| | - Ángel Soriano Castrejón
- 1 Nuclear Medicine Department, University General Hospital, Ciudad Real, Spain ; 2 Laboratory of Mathematical Oncology, Institute for Applied Mathematics in Science and Engineering, Castilla-La Mancha University, Ciudad Real, Spain
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Li W, Pang H, Liu Q, Zhou J. The role of ¹⁸F-FDG PET or ¹⁸F-FDG-PET/CT in the evaluation of solitary pulmonary nodules. Eur J Radiol 2015; 84:2032-7. [PMID: 26094866 DOI: 10.1016/j.ejrad.2015.06.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/02/2015] [Accepted: 06/08/2015] [Indexed: 12/12/2022]
Abstract
Even with the recent advance in diagnostic tools and techniques, solitary pulmonary nodules (SPNs) remains a major clinical challenge for all doctors involved in their study. There are a wide range of diagnoses of benign and malignant lesions that can manifest as SPNs. Positron emission tomography (PET) or positron emission tomography/computed tomography (PET/CT) makes a great contribution to the diagnosis and differential diagnosis of SPNs due to the high sensitivity of pathological accumulation of (18)F-FDG. Owing to integrates the anatomical morphological and metabolic aspects in a single examination, high sensitivity and the ability to perform whole-body scans, combined PET/CT improving overall diagnosis accuracy.
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Affiliation(s)
- Wenbo Li
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hua Pang
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Qiong Liu
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jing Zhou
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Circulating Tumor Cells in Diagnosing Lung Cancer: Clinical and Morphologic Analysis. Ann Thorac Surg 2015; 99:1899-905. [DOI: 10.1016/j.athoracsur.2014.11.049] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 11/06/2014] [Accepted: 11/24/2014] [Indexed: 11/18/2022]
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Dong MJ, Zhao K, Liu ZF, Wang GL, Yang J. Primary pulmonary amyloidosis misdiagnosed as malignancy on dual-time-point fluoro-deoxyglucose positron emission tomography/computed tomography: A case report and review of the literature. Oncol Lett 2014; 9:591-594. [PMID: 25624887 PMCID: PMC4301551 DOI: 10.3892/ol.2014.2778] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 11/21/2014] [Indexed: 12/12/2022] Open
Abstract
Primary pulmonary amyloidosis is an uncommon manifestation, characterized by amyloid deposition in the lungs and other associated tissue. The clinical presentation of amyloidosis is variable, with non-specific symptoms. The current study reports the case of a 59-year-old female presenting with primary pulmonary amyloidosis, indistinguishable from lung malignancy based on 18F-fluoro-deoxyglucose (18F-FDG) accumulation on dual-time-point (DTP) FDG-positron emission tomography/computed tomography (PET/CT) imaging and the similarities in morphological changes. A percutaneous CT-guided thoracoscopic biopsy was subsequently performed. Histological examination revealed that the specimens contained amorphous, homogeneous material with a number of polyclonal plasma cells, lymphocytes and giant cells. A diagnosis of primary nodular parenchymal pulmonary amyloidosis was determined, and the patient was discharged without chemotherapy. The patient remained in good clinical condition during follow-up. The present case indicated that localized nodular amyloidosis with increased FDG uptake on DTP FDG PET must be considered in the differential diagnosis of growing lung nodules, and that a histological examination must be conducted to distinguish this condition from malignancies of the lung.
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Affiliation(s)
- Meng-Jie Dong
- Positron Emission Tomography Center, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Kui Zhao
- Positron Emission Tomography Center, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Zhen-Feng Liu
- Positron Emission Tomography Center, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Guo-Lin Wang
- Positron Emission Tomography Center, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Jun Yang
- Department of Nuclear Medicine, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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Kim HS, Lee KS, Ohno Y, van Beek EJ, Biederer J. PET/CT versus MRI for diagnosis, staging, and follow-up of lung cancer. J Magn Reson Imaging 2014; 42:247-60. [DOI: 10.1002/jmri.24776] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 09/27/2014] [Indexed: 12/19/2022] Open
Affiliation(s)
- Hyun Su Kim
- Department of Radiology and Center for Imaging Science; Samsung Medical Center, Sungkyunkwan University School of Medicine; Seoul Korea
| | - Kyung Soo Lee
- Department of Radiology and Center for Imaging Science; Samsung Medical Center, Sungkyunkwan University School of Medicine; Seoul Korea
| | - Yoshiharu Ohno
- Division of Functional and Diagnostic Imaging Research; Department of Radiology; and Advanced Biomedical Imaging Research Centre, Kobe University Graduate School of Medicine; Kobe Japan
| | | | - Juergen Biederer
- Radiologie Darmstadt; Gross-Gerau County Hospital; Gross-Gerau Germany
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Murrmann GB, van Vollenhoven FHM, Moodley L. Approach to a solid solitary pulmonary nodule in two different settings-"Common is common, rare is rare". J Thorac Dis 2014; 6:237-48. [PMID: 24624288 DOI: 10.3978/j.issn.2072-1439.2013.11.13] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 11/20/2013] [Indexed: 12/19/2022]
Abstract
A new solid solitary pulmonary nodule (SPN) is a common feature in the daily practice of physicians, pulmonologists and thoracic surgeons. The etiology and consequently the diagnostic approach is very different in various parts of the world. Identification of malignant nodules is the universal goal to proceed to a potential curable therapy. In countries with a low incidence of inflammatory disease and a high incidence of lung cancer the diagnostic work up includes a positron emission tomography (PET) scan or PET-computer tomography (CT) as a main pillar. In countries with a high incidence of inflammatory and infectious disease and a low incidence in lung cancer this diagnostic work up needs to be adapted. In these settings a PET scan has a limited role and tissue diagnosis, whether with a trans-thoracic, trans-bronchial biopsy or a video-assisted wedge resection is the most targeted approach to determine or exclude malignancy. The evaluation of a solid SPN in the two different situations is outlined in our algorithm. Recommendations stress the value of clinical judgement in different settings, determination of probabilities of malignancy, cost-effective use of diagnostic tools and evaluation of various management alternatives according to the risk profile and the patients preferences.
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Affiliation(s)
- Gabriele B Murrmann
- 1 Department of Surgery, 2 Department of Pulmonology, Medisch Centrum Leeuwarden, The Netherlands ; 3 Department of Cardio-Thoracic Surgery, Groote Schuur Hospital, University of Cape Town, South Africa
| | - Femke H M van Vollenhoven
- 1 Department of Surgery, 2 Department of Pulmonology, Medisch Centrum Leeuwarden, The Netherlands ; 3 Department of Cardio-Thoracic Surgery, Groote Schuur Hospital, University of Cape Town, South Africa
| | - Loven Moodley
- 1 Department of Surgery, 2 Department of Pulmonology, Medisch Centrum Leeuwarden, The Netherlands ; 3 Department of Cardio-Thoracic Surgery, Groote Schuur Hospital, University of Cape Town, South Africa
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Reyes N, Onadeko OO, Luraschi-Monjagatta MDC, Knox KS, Rennels MA, Walsh TK, Ampel NM. Positron emission tomography in the evaluation of pulmonary nodules among patients living in a coccidioidal endemic region. Lung 2014; 192:589-93. [PMID: 24801058 DOI: 10.1007/s00408-014-9589-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 04/15/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Within a coccidioidal endemic region, pulmonary nodules due to coccidioidomycosis are common. Uptake of (18)fluorodeoxyglucose ((18)FDG) by positron emission tomography with computed axial tomography (PET/CT) has been used to assess whether pulmonary nodules are malignant but inflammatory lesions can be positive. The purpose of this study was to compare by PET/CT the (18)FDG uptake in pulmonary nodules likely due to coccidioidomycosis to that of nodules shown to be malignant among patients living in a coccidioidal endemic region. METHODS We retrospectively reviewed patients who underwent a PET/CT at the Southern Arizona Veterans Affairs Health Care System between January 2008 and March 2012 who were subsequently found on biopsy to have pulmonary nodules that were coccidioidal or granulomatous or were due to malignancy. RESULTS Among 245 diagnostic biopsies where the subject had a previous PET/CT, 15 (6.1 %) were either coccidioidal (n = 12) or granulomatous without an identified organism (n = 3). The median maximum standard unit of uptake (SUV(max)) on PET/CT of coccidioidal or granulomatous lesions was 2.0 compared to 9.8 for malignant lesions (P < 0.001). The maximum diameter of the coccidioidal or granulomatous nodules was 2.1 cm compared to 3.0 cm for the malignant lesions (P = 0.009). On multivariable analysis, an elevated SUV(max) was the only distinguishing feature between the malignant and the granulomatous lesions (OR 1.28, 95 % CI 1.05-1.55; P = 0.013). CONCLUSIONS Coccidioidal pulmonary nodules take up significantly less (18)FDG than those due to malignancies, but there is considerable overlap between granulomatous and malignant lesions at lower SUV(max).
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Affiliation(s)
- Nathaniel Reyes
- Pulmonary and Critical Care Division, University of Arizona, Tucson, AZ, USA
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Lu Z, Qian F, Chen S, Yu G. Pulmonary hamartoma resembling multiple metastases: A case report. Oncol Lett 2014; 7:1885-1888. [PMID: 24932253 PMCID: PMC4049732 DOI: 10.3892/ol.2014.2043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 02/26/2014] [Indexed: 11/29/2022] Open
Abstract
The current study presents the case of a patient with multiple pulmonary nodules as observed by computed tomography. Furthermore, a marginal increase in fluorodeoxyglucose uptake was identified by positron emission tomography. Due to the appearance of multiple small nodules and a history of radical nephrectomy, a hypothetical diagnosis of pulmonary metastasis of a previously excised renal carcinoma was determined, which was confirmed by biopsy. Video-assisted thoracoscopic surgical resection of the nodules was proposed and pathological examination exhibited an unforeseen and rare observation.
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Affiliation(s)
- Zhenya Lu
- Department of Internal Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Fangfang Qian
- The First Clinical Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Shanwen Chen
- Department of Urology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Guowei Yu
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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The role of PET/CT in assessing pulmonary nodules in children with solid malignancies. AJR Am J Roentgenol 2014; 201:W900-5. [PMID: 24261397 DOI: 10.2214/ajr.12.10205] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE. The purpose of this article is to assess the feasibility and utility of PET/CT in distinguishing benign from malignant pulmonary nodules in patients with solid childhood malignancies. SUBJECTS AND METHODS. This prospective study was conducted between March 2008 and August 2010. We enrolled 25 subjects 21 years old or younger with solid childhood malignancies and at least one pulmonary nodule measuring 0.5-3.0 cm. PET/CT was performed within 3 weeks of diagnostic chest CT. Three panels of three reviewers each reviewed diagnostic CT only (panel 1), PET/CT only (panel 2), or diagnostic CT and PET/CT concurrently (panel 3) and predicted each nodule's histologic diagnosis as benign, malignant, or indeterminate. Interreviewer agreement was assessed with the kappa statistic. Using nodule biopsy or clinical follow-up as reference standards, the sensitivity, specificity, and accuracy for each panel was assessed. Logistic regression was used to assess the nodule's maximum standardized uptake value (SUVmax) association with its histologic diagnosis. RESULTS. There were 75 nodules with a median size of 0.74 cm (range, 0.18-2.38 cm); 48 nodules were malignant. Sensitivity was 85% (41/48) for panel 1, 60% (29/48) for panel 2, and 67% (32/48) for panel 3. All panels had poor specificities. Interreviewer agreement was moderate for panel 1 (0.43) and poor for panels 2 (0.22) and 3 (0.33). SUVmax was a significant predictor of histologic diagnosis (p = 0.004). CONCLUSION. PET/CT assessment of pulmonary nodules is feasible in children with solid malignancies but may not reliably improve our ability to predict a nodule's histologic diagnosis. The SUVmax may improve the performance of PET/CT in this setting.
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Ambrosini-Spaltro A, Ruiu A, Seebacher C, Vattemi E, Gentile L, Feil B, Zaraca F, Carella R. Impact of the IASLC/ATS/ERS classification in pN0 pulmonary adenocarcinomas: a study with radiological-pathological comparisons and survival analyses. Pathol Res Pract 2013; 210:40-6. [PMID: 24211161 DOI: 10.1016/j.prp.2013.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/13/2013] [Accepted: 09/27/2013] [Indexed: 02/07/2023]
Abstract
The aim of this study was: (1) to compare the new pathological findings as detected by the IASLC/ATS/ERS classification with the traditional radiological features in pulmonary pN0 adenocarcinomas, (2) to evaluate their prognostic significance on overall survival (OS). A total of 42 surgically resected pN0 pulmonary adenocarcinomas were analyzed. On CT scans, the following radiological data were recorded: sphericity, predominant margins, cavitation and bronchogram, attenuation and percentage of ground glass opacity (GGO). On pathological examination, tumors were categorized according to the IASLC/ATS/ERS classification; Sica score and grade, pathological stage, tumor major axis, pleural invasion, vascular and lymphatic invasion, peritumoral lymphoid infiltration, and cytological features were also determined. Clinical follow up was available in 37 cases (range 1-117 months). Radiologically, 31 solid and 11 semisolid tumors were found. Morphologically, 2 minimally invasive and 40 invasive adenocarcinomas were diagnosed. In radiological-pathological comparisons, (1) the acinar pattern was higher in tumors with solid attenuation and low GGO (p=0.018); (2) the lepidic pattern was more elevated in tumors with high GGO (p=0.012). In multivariate survival analyses with stage, predominant margins on CT scans (p=0.036) and Sica score (p=0.028) significantly affected OS. This study confirms the validity of the new classification of pulmonary adenocarcinomas in radiological-pathological comparisons and underlines the importance of both radiological and pathological findings in correctly identifying their prognostic features.
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Affiliation(s)
| | - Antonio Ruiu
- Radiology Unit, Central Hospital, Bolzano, Italy
| | | | | | | | - Birgit Feil
- Thoracic Surgery Unit, Central Hospital, Bolzano, Italy
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31
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Yang P, Xu XY, Liu XJ, Gong JS. The value of delayed (18)F FDG-PET imaging in diagnosis of solitary pulmonary nodules: A preliminary study on 28 patients. Quant Imaging Med Surg 2012; 1:31-4. [PMID: 23256051 DOI: 10.3978/j.issn.2223-4292.2011.11.03] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 11/15/2011] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The aim of this study was to investigate whether adding delayed phase imaging can improve diagnostic ability of (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET) in evaluating solitary pulmonary nodules (SPNs). MATERIALS AND METHODS 28 patients with SPNs received dual-phase (18)F-FDG PET at 1h and 2h after (18)F-FDG injection during Feb 2009 to Jun 2011were included in this retrospective study. Their final diagnosis was confirmed by pathological examination in 27 cases and clinical follow-up in 1 case. The standardized uptake value (SUV) of early and delayed phases of all lesions was measured. RESULTS The 28 SPNs included 9 benign lesions and 19 malignant lesions. Using SUV ≥2.5 as a criteria for malignancy, the sensitivity, specificity, and accuracy were 52.6%, 55.6% and 53.6% respectively at early phase; 68.4%, 55.6% and 64.3% respectively at early and delayed phases combined. Combined early and delayed phase scans combined picked up 3 additional malignant lesions from the 14 lesions with an initial SUV value less than 2.5, and there was no additional false positive result with the benign lesions. CONCLUSION Adding delayed phase scanning resulted in correct diagnosis of three malignant lesions with an initial SUV value less than 2.5. Delayed phase scanning can be recommended in the SPNs with SUV less than 2.5 at early phase.
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Affiliation(s)
- Peng Yang
- PET/CT Center, Shenzhen Health Committee Office, Shenzhen 518020, China
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Khan AN, Al-Jahdali HH, Irion KL, Arabi M, Koteyar SS. Solitary pulmonary nodule: A diagnostic algorithm in the light of current imaging technique. Avicenna J Med 2012; 1:39-51. [PMID: 23210008 PMCID: PMC3507065 DOI: 10.4103/2231-0770.90915] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The solitary pulmonary nodule (SPN) is frequently seen on chest radiographs and computed tomography (CT). The finding of a SPN usually provokes a flurry of clinical and imaging activity as an SPN in at-risk population is an alert signal of possible lung cancer. The frequency of malignant nodules in a given population is variable and depends on the endemicity of granulomatous disease. The percentage of malignant nodules also rises when dealing with at-risk population. The problem is compounded by the fact that with the present generation of CT scanners, 1-2 mm nodules are discovered in approximately half of the smokers aged 50 years or older scanned. A variety of management approaches are applied in the work-up of SPN often requiring evaluation over a long period of time to establish a benign or malignant diagnosis. Comparison with previous imaging studies and morphologic evaluation of the size, margins, and internal characteristics are usually the first step in the evaluation of these nodules. It is often necessary to use additional imaging techniques and occasionally invasive procedures such a percutaneous needle lung or a surgical biopsy. Until recently, the guidelines for follow-up of indeterminate noncalcified nodules detected on nonscreening CT was a minimum of 2 years. However, during the past few years due to further refinements in CT technology and better understanding of tumor behavior, it has prompted a revision of the guidelines of the follow-up of small indeterminate nodules. These guidelines have been endorsed by the Fleischner Society.
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Affiliation(s)
- Ali Nawaz Khan
- North Manchester General Hospital, Pennine Acute NHS Trust, Manchester, UK
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Magalhães Barros Netto S, Corrêa Silva A, Acatauassú Nunes R, Gattass M. Automatic segmentation of lung nodules with growing neural gas and support vector machine. Comput Biol Med 2012; 42:1110-21. [PMID: 23021776 DOI: 10.1016/j.compbiomed.2012.09.003] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 06/25/2012] [Accepted: 09/05/2012] [Indexed: 11/26/2022]
Abstract
Lung cancer is distinguished by presenting one of the highest incidences and one of the highest rates of mortality among all other types of cancer. Unfortunately, this disease is often diagnosed late, affecting the treatment outcome. In order to help specialists in the search and identification of lung nodules in tomographic images, many research centers have developed computer-aided detection systems (CAD systems) to automate procedures. This work seeks to develop a methodology for automatic detection of lung nodules. The proposed method consists of the acquisition of computerized tomography images of the lung, the reduction of the volume of interest through techniques for the extraction of the thorax, extraction of the lung, and reconstruction of the original shape of the parenchyma. After that, growing neural gas (GNG) is applied to constrain even more the structures that are denser than the pulmonary parenchyma (nodules, blood vessels, bronchi, etc.). The next stage is the separation of the structures resembling lung nodules from other structures, such as vessels and bronchi. Finally, the structures are classified as either nodule or non-nodule, through shape and texture measurements together with support vector machine. The methodology ensures that nodules of reasonable size be found with 86% sensitivity and 91% specificity. This results in a mean accuracy of 91% for 10 experiments of training and testing in a sample of 48 nodules occurring in 29 exams. The rate of false positives per exam was of 0.138, for the 29 exams analyzed.
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Affiliation(s)
- Stelmo Magalhães Barros Netto
- Federal University of Maranhão - UFMA, Applied Computing Group - NCA, Av. dos Portugueses, SN, Campus do Bacanga, Bacanga 65085-580, São Luís, MA, Brazil.
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Tanaka K, Shimizu K, Ohtaki Y, Nakano T, Kamiyoshihara M, Kaira K, Rokutanda N, Horiguchi J, Oyama T, Takeyoshi I. Diagnosis and surgical resection of solitary pulmonary nodules in patients with breast cancer. Mol Clin Oncol 2012; 1:117-123. [PMID: 24649133 DOI: 10.3892/mco.2012.21] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 08/02/2012] [Indexed: 01/02/2023] Open
Abstract
The differential diagnosis of solitary pulmonary nodules (SPNs) using radiological features in patients with breast cancer is vital yet difficult. The nature of SPNs, of these patients, as well as the role of surgery in the diagnosis and treatment were evaluated. Thirty consecutive patients, who underwent surgery for an SPN between 2002 and 2011 subsequent to curative surgery for breast cancer were retrospectively evaluated. The overall survival and disease-free survival periods were estimated using the Kaplan-Meier method. The Student's t-test and the χ2 test were performed to compare percentages and the mean values, respectively. The values were considered statistically significant at P<0.05. Most (93%) SPNs were malignant. The pathological diagnoses in patients with SPNs were primary lung cancer (n=20, 67%), pulmonary metastasis from breast (n=7, 23%) or colon (n=1, 3%) cancers and benign conditions (n=2, 7%). Of the 20 patients with primary lung cancer, 15 (75%) had stage IA tumors (T1aN0M0). The average disease-free interval was significantly longer in patients with primary lung cancer compared to patients with pulmonary metastases from breast cancer (P= 0.031). The five-year survival rates after pulmonary resection for lung metastasis from breast cancer patients and primary lung cancer patients were 100 and 61.1%, respectively. SPNs found in patients with breast cancer were found to have a high probability of malignancy, especially primary lung adenocarcinoma. The early resection of SPNs in patients diagnosed with both primary and metastatic lung cancer led to a good prognosis. The early pathological diagnosis by surgical resection was suggested to be conducted for the early diagnosis and appropriate treatment of SPNs in patients with breast cancer.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Tetsunari Oyama
- Division of Diagnostic Pathology, Graduate School of Medicine, Gunma University, Maebashi, Gunma 371-8511, Japan
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Shan F, Zhang Z, Xing W, Qiu J, Yang S, Wang J, Jiang Y, Chen G. Differentiation between malignant and benign solitary pulmonary nodules: use of volume first-pass perfusion and combined with routine computed tomography. Eur J Radiol 2012; 81:3598-605. [PMID: 22608062 DOI: 10.1016/j.ejrad.2012.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 04/02/2012] [Accepted: 04/10/2012] [Indexed: 10/28/2022]
Abstract
PURPOSE To evaluate the capability of first-pass volume perfusion computed tomography (PCT) for differentiation of solitary pulmonary nodules (SPNs) and to compare that of combination of PCT and routine CT with CT alone for the differentiation. MATERIALS AND METHODS Our institutional review board approved this study and informed consent was obtained. With nine excluded, 65 consecutive patients having a SPN with histopathologic proof or follow-up underwent a 30s PCT using the deconvolution model were evaluated. Kruskal-Wallis tests and receiver operating characteristics (ROC) analysis were underwent. Four radiologists assessed nodules independently and retrospectively. Diagnostic capability was compared for CT alone and PCT plus CT. ROC analysis, McNemar test, and weighted kappa statistics were performed. RESULTS Significant differences were found in parameters between malignant and benign nodules (p<0.0001 for blood flow, blood volume, and permeability surface area product), SPNs were more likely to be malignant by using threshold values of more than 55 ml/100 g/min, 2.5 ml/100 g, and 10 ml/100 g/min, respectively. PCT plus CT was significantly better in overall sensitivity (93%, p=0.004) and accuracy (94%, p=0.003) compared to CT alone, not specificity (96%). Area under the curve for ROC analyses of PCT plus CT was significantly larger than that of CT alone (p=0.018). Mean weighted kappa for PCT plus CT was 0.715, that for CT alone was 0.447. CONCLUSION Volume first-pass PCT can distinguish SPNs. Using PCT plus routine CT may be more sensitive and accurate for differentiating malignant from benign nodules than CT alone and allows more confidence and constancy.
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Affiliation(s)
- Fei Shan
- Department of Radiology, Third Affiliated Hospital of Suzhou University, 185, Juqian Road, Changzhou, Zip Code: 213003, PR China.
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Calcagni ML, Taralli S, Maggi F, Rufini V, Treglia G, Leccisotti L, Bonomo L, Giordano A. ¹⁸F-fluoro-deoxy-glucose focal uptake in very small pulmonary nodules: fact or artifact? Case reports. World J Surg Oncol 2012; 10:71. [PMID: 22540935 PMCID: PMC3488528 DOI: 10.1186/1477-7819-10-71] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 04/28/2012] [Indexed: 11/12/2022] Open
Abstract
Background 18F-fluoro-deoxy-glucose (18 F-FDG) positron emission tomography integrated/combined with computed tomography (PET-CT) provides the best diagnostic results in the metabolic characterization of undetermined solid pulmonary nodules. The diagnostic performance of 18 F-FDG is similar for nodules measuring at least 1 cm and for larger masses, but few data exist for nodules smaller than 1 cm. Case presentation We report five cases of oncologic patients showing focal lung 18 F-FDG uptake on PET-CT in nodules smaller than 1 cm. We also discuss the most common causes of 18 F-FDG false-positive and false-negative results in the pulmonary parenchyma. In patient 1, contrast-enhanced CT performed 10 days before PET-CT did not show any abnormality in the site of uptake; in patient 2, high-resolution CT performed 1 month after PET showed a bronchiole filled with dense material interpreted as a mucoid impaction; in patient 3, contrast-enhanced CT performed 15 days before PET-CT did not identify any nodules; in patients 4 and 5, contrast-enhanced CT revealed a nodule smaller than 1 cm which could not be characterized. The 18 F-FDG uptake at follow-up confirmed the malignant nature of pulmonary nodules smaller than 1 cm which were undetectable, misinterpreted, not recognized or undetermined at contrast-enhanced CT. Conclusion In all five oncologic patients, 18 F-FDG was able to metabolically characterize as malignant those nodules smaller than 1 cm, underlining that: 18 F-FDG uptake is not only a function of tumor size but it is strongly related to the tumor biology; functional alterations may precede morphologic abnormalities. In the oncologic population, especially in higher-risk patients, PET can be performed even when the nodules are smaller than 1 cm, because it might give an earlier characterization and, sometimes, could guide in the identification of alterations missed on CT.
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Affiliation(s)
- Maria Lucia Calcagni
- Institute of Nuclear Medicine, Università Cattolica del Sacro Cuore, Largo A, Gemelli, 8, 00168 Rome, Italy.
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Chen B, Wang Y, Cao H, Liu D, Zhang S, Gao J, Yu J, Huang Y, Li W. Early lung cancer detection using the self-evaluation scoring questionnaire and chest digital radiography: a 3-year follow-up study in China. J Digit Imaging 2012; 26:72-81. [PMID: 22411060 DOI: 10.1007/s10278-012-9468-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The standard definition of high-risk individuals for lung cancer was not uniform and the value of chest digital radiography (DR) in lung cancer screening was still unproven. The aim of this study was to assess whether the original questionnaire named as "Self-evaluation Scoring Questionnaire for High-risk Individuals of Lung Cancer" combined with DR examinations could detect early stage of lung cancer effectively. The Self-evaluation Scoring Questionnaire for High-risk Individuals of Lung Cancer had been designed in previous studies. Subjects with scores over 116 points were regarded as high-risk individuals and underwent the current DR scans at least once a year from 2007 to 2009. Noncalcified nodules with a diameter over 30 mm, along with enlarged pulmonary hilus and atelectasis, were considered to be positive and subjected to further special examinations. Efficacy of the scoring questionnaire combined with DR scans was estimated by 3-year results. Among 1,537 subjects, 13, 11, and 7 were diagnosed with lung cancer in the first, second, and third year, respectively, indicating the detection rate of 2.02 % (31/1,537). In addition, 77.42 % (24/31) of the patients were in stage I and 51.61 % (16/31) were adenocarcinomas. For the 31 cases, 28 were defined as detected cancers, while the other three were interval ones, only accounting for 0.20 % (3/1,504) of individuals with negative judgments. The protocol of Self-evaluation Scoring Questionnaire for High-risk Individuals of Lung Cancer combined with DR scans is a cost-effective and safe approach to detect early stage of lung cancer.
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Affiliation(s)
- Bojiang Chen
- Department of Respiratory Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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Ray CE, English B, Funaki BS, Burke CT, Fidelman N, Ginsburg ME, Kinney TB, Kostelic JK, Kouri BE, Lorenz JM, Nair AV, Nemcek AA, Owens CA, Saleh AG, Vatakencherry G, Mohammed TLH. ACR Appropriateness Criteria® Radiologic Management of Thoracic Nodules and Masses. J Am Coll Radiol 2012; 9:13-9. [DOI: 10.1016/j.jacr.2011.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 09/19/2011] [Indexed: 12/21/2022]
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Li Y, Su M, Li F, Kuang A, Tian R. The value of 18F-FDG-PET/CT in the differential diagnosis of solitary pulmonary nodules in areas with a high incidence of tuberculosis. Ann Nucl Med 2011; 25:804-11. [DOI: 10.1007/s12149-011-0530-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 08/16/2011] [Indexed: 12/19/2022]
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40
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Jindal T, Sharma N, Kumar A, Iyer VK. Pulmonary hamartoma with tuberculosis masquerading as metastasis. Ann Thorac Med 2011; 6:152-3. [PMID: 21760849 PMCID: PMC3131760 DOI: 10.4103/1817-1737.82452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 03/12/2011] [Indexed: 11/15/2022] Open
Affiliation(s)
- Tarun Jindal
- Department of Surgical Disciplines, All India Institute of Medical Sciences, New Delhi, India
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41
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Wu NY, Cheng HC, Ko JS, Cheng YC, Lin PW, Lin WC, Chang CY, Liou DM. Magnetic resonance imaging for lung cancer detection: experience in a population of more than 10,000 healthy individuals. BMC Cancer 2011; 11:242. [PMID: 21668954 PMCID: PMC3136423 DOI: 10.1186/1471-2407-11-242] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Accepted: 06/13/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Recent refinements of lung MRI techniques have reduced the examination time and improved diagnostic sensitivity and specificity. We conducted a study to assess the feasibility of MRI for the detection of primary lung cancer in asymptomatic individuals. METHODS A retrospective chart review was performed on images of lung parenchyma, which were extracted from whole-body MRI examinations between October 2000 and December 2007. 11,766 consecutive healthy individuals (mean age, 50.4 years; 56.8% male) were scanned using one of two 1.5-T scanners (Sonata and Sonata Maestro, Siemens Medical Solutions, Erlangen, Germany). The standard protocol included a quick whole-lung survey with T2-weighted 2-dimensional half Fourier acquisition single shot turbo spin echo (HASTE) and 3-dimensional volumetric interpolated breath-hold examination (VIBE). Total examination time was less than 10 minutes, and scanning time was only 5 minutes. Prompt referrals and follow-ups were arranged in cases of suspicious lung nodules. RESULTS A total of 559 individuals (4.8%) had suspicious lung nodules. A total of 49 primary lung cancers were diagnosed in 46 individuals: 41 prevalence cancers and 8 incidence cancers. The overall detection rate of primary lung cancers was 0.4%. For smokers aged 51 to 70 years, the detection rate was 1.4%. TNM stage I disease accounted for 37 (75.5%). The mean size of detected lung cancers was 1.98 cm (median, 1.5 cm; range, 0.5-8.2 cm). The most histological types were adenocarcinoma in 38 (77.6%). CONCLUSION Rapid zero-dose MRI can be used for lung cancer detection in a healthy population.
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Affiliation(s)
- Nai-Yuan Wu
- Institute of BioMedical Informatics, National Yang-Ming University, Taipei, Taiwan
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42
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Cappabianca S, Porto A, Petrillo M, Greco B, Reginelli A, Ronza F, Setola F, Rossi G, Di Matteo A, Muto R, De Rimini ML, Piccolo S, Catalano M, Muto P, De Rosa N, Barra E, De Rosa I, Antinolfi F, Antinolfi G, Caputi M, Brunese L, Grassi R, Rotondo A. Preliminary study on the correlation between grading and histology of solitary pulmonary nodules and contrast enhancement and [18F]fluorodeoxyglucose standardised uptake value after evaluation by dynamic multiphase CT and PET/CT. J Clin Pathol 2010; 64:114-9. [PMID: 21169276 PMCID: PMC3030774 DOI: 10.1136/jcp.2010.076562] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Aim To evaluate whether the histology and grading of solitary pulmonary nodules (SPNs) correlated with the results of dynamic multiphase multidetector CT (MDCT) and the [18F]fluorodeoxyglucose standardised uptake value (SUV) in 30 patients. Methods Chest x-rays of 270 patients with incidentally detected SPNs were retrospectively evaluated. Thirty patients with histologically proven SPNs were enrolled. On MDCT and positron emission tomography (PET)/CT images, two experts measured the density of nodules in all perfusion phases and the SUV. Net enhancement (NE) was calculated by subtracting peak pre-contrast density from peak post-contrast density. The Pearson test was used to correlate nodule NE, SUV, grading, histology and diameter. Results Of the 30 malignant SPNs, six were classified as G1 (median NE, 31.5 Hounsfield units (HU); median SUV, 4.8 units), 15 were classified as G2 (median NE, 49 HU; median SUV, 6 units), and nine were classified as G3 (median NE, 32 HU; median SUV, 4.5 units). A highly negative correlation was found in G3 SPNs between NE and the corresponding diameters (r=−0.834; p=0.00524). NE increased with the increase in diameter (r=0.982; p=0.284). SUV increased as the SPN diameter increased (r=0.789; p=0.421). NE and SUV were higher in G2 than G1 SPNs, and lower in G2 than G3 SPNs (r=0.97; p=0.137). Conclusions The significant correlation in dedifferentiated (G3) SPNs between NE and diameter (r=−0.834; p=0.00524) supports the theory that stroma and neoangiogenesis are fundamental in SPN growth. The highly negative correlation between NE and diameter demonstrates a net decrease in perfusion despite an increase in dimension. The multidisciplinary approach used herein may result in a more precise prognosis and consequently a better therapeutic outcome, particularly in patients with undifferentiated lung cancer.
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Affiliation(s)
- Salvatore Cappabianca
- Department of Clinical Internal Medicine F Magrassi-L Lanzara, Science Section of Radiology, Second University of Studies of Naples, Naples, Italy.
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Thiessen NR, Bremner R. The solitary pulmonary nodule: approach for a general surgeon. Surg Clin North Am 2010; 90:1003-18. [PMID: 20955880 DOI: 10.1016/j.suc.2010.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The solitary pulmonary nodule is a common finding on radiographic studies performed for other reasons. It is important that the probability of malignancy be assessed when these nodules are found. This chapter outlines a diagnostic approach for these nodules to optimize non-invasive and invasive testing, and describes the value of the various modalities used to evaluate these abnormalities.
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Affiliation(s)
- Nicholas R Thiessen
- Department of surgery, Joseph's Hospital and Medical Center, 350 West Thomas Road, Phoenix, AZ 85013, USA
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Coche E, Lonneux M, Geets X. Lung cancer: Morphological and functional approach to screening, staging and treatment planning. Future Oncol 2010; 6:367-80. [PMID: 20222794 DOI: 10.2217/fon.10.7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Lung cancer is a major problem in public health and constitutes the leading cause of cancer-related mortality in the world. Lung cancer screening with low-dose computed tomography is promising but needs to overcome many difficulties, such as the large number of incidentally discovered nodules, the radiation dose delivered to the patient during a whole screening program and its cost. The ultimate target point represented by the reduction of lung cancer-related mortality needs to be proved in large, well-designed, randomized, multicenter, prospective trials. Lung cancer staging by morphological tools seems to be limited owing to the presence of metastases in normal-sized lymph nodes. In this context, multidetector computed tomography cannot be used alone but is useful in conjunction with molecular imaging and MRI. Today, flurodeoxglucose PET-CT appears to be the most accurate method for lung cancer staging and may prevent unnecessary thoracotomies. For treatment planning, flurodeoxglucose PET-CT is playing an increasing role in radiotherapy planning at the target selection and definition steps.
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Affiliation(s)
- Emmanuel Coche
- Department of Medical Imaging, Université Catholique de Louvain, Cliniques Universitaires St-Luc, Brussels, Belgium.
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Carcinoma of the Lung Misinterpreted as Pulmonary Sequestration on Contrast CT But Correctly Identified on FDG PET/CT. Clin Nucl Med 2010; 35:343-5. [DOI: 10.1097/rlu.0b013e3181d6276d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Respiratory gating enhances imaging of pulmonary nodules and measurement of tracer uptake in FDG PET/CT. AJR Am J Roentgenol 2010; 193:1640-5. [PMID: 19933659 DOI: 10.2214/ajr.09.2516] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate prospectively the effects of respiratory gating during FDG PET/CT on the determination of lesion size and the measurement of tracer uptake in patients with pulmonary nodules in a clinical setting. SUBJECTS AND METHODS Eighteen patients with known pulmonary nodules (nine women, nine men; mean age, 61.4 years) underwent conventional FDG PET/CT and respiratory-gated PET acquisitions during their scheduled staging examinations. Maximum, minimum, and average standardized uptake values (SUVs) and lesion size and volume were determined with and without respiratory gating. The results were then compared using the two-tailed Student's t test and the nonparametric Wilcoxon's test to assess the effects of respiratory gating on PET acquisitions. RESULTS Respiratory gating reduced the measured area of lung lesions by 15.5%, the axial dimension by 10.3%, and the volume by 44.5% (p = 0.014, p = 0.007, and p = 0.025, respectively). The lesion volumes in gated studies were closer to those assessed by standard CT (difference decreased by 126.6%, p = 0.025). Respiratory gating increased the measured maximum SUV by 22.4% and average SUV by 13.3% (p < 0.001 and p = 0.002). CONCLUSION Our findings suggest that the use of PET respiratory gating in PET/CT results in lesion volumes closer to those assessed by CT and improved measurements of tracer uptake for lesions in the lungs.
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Cho JH, Kim JT, Kim L, Lee KH, Ryu JS, Kwak SM, Lee HL. A pulmonary nodule due to pulmonary infarction diagnosed by video-assisted thoracoscopy. Yonsei Med J 2009; 50:591-3. [PMID: 19718413 PMCID: PMC2730627 DOI: 10.3349/ymj.2009.50.4.591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2007] [Revised: 01/04/2008] [Accepted: 01/04/2008] [Indexed: 11/27/2022] Open
Abstract
We report a pulmonary infarction in 68-year-old man who was referred for an asymptomatic pulmonary nodule in chest radiography. Computed tomography (CT), positron emission tomography (PET), and transthoracic needle aspiration suggested suspicion for malignancy. Video-assisted thoracoscopic surgery (VATS) was performed for histologic diagnosis. Our case is a pulmonary nodule due to pulmonary infarction diagnosed by VATS in Korea.
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Affiliation(s)
- Jae Hwa Cho
- Department of Internal Medicine, School of Medicine, Inha University, Incheon, Korea.
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Murray CP, Wong PM, Louw J, Waterer GW. Western Australian cigarette smokers have fewer small lung nodules than North Americans on CT screening for lung cancer. J Med Imaging Radiat Oncol 2009; 53:339-44. [DOI: 10.1111/j.1754-9485.2009.02037.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gibbs JD, Graham MW, Higgins WE. 3D MDCT-based system for planning peripheral bronchoscopic procedures. Comput Biol Med 2009; 39:266-79. [PMID: 19217089 DOI: 10.1016/j.compbiomed.2008.12.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2008] [Revised: 12/13/2008] [Accepted: 12/23/2008] [Indexed: 11/17/2022]
Abstract
The diagnosis and staging of lung cancer often begins with the assessment of a suspect peripheral chest site. Such suspicious peripheral sites may be solitary pulmonary nodules or other abnormally appearing regions of interest (ROIs). The state-of-the-art process for assessing such peripheral ROIs involves off-line procedure planning using a three-dimensional (3D) multidetector computed tomography (MDCT) chest scan followed by bronchoscopy with an ultrathin bronchoscope. We present an integrated computer-based system for planning peripheral bronchoscopic procedures. The system takes a 3D MDCT chest image as input and performs nearly all operations automatically. The only interaction required by the physician is the selection of ROI locations. The system is computationally efficient and fits smoothly within the clinical work flow. Integrated into the system and described in detail in the paper is a new surface-definition method, which is vital for effective analysis and planning to peripheral sites. Results demonstrate the efficacy of the system and its usage for the live guidance of ultrathin bronchoscopy to the periphery.
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Affiliation(s)
- Jason D Gibbs
- Department of Electrical Engineering, Penn State University, University Park, PA 16802, USA
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Choi EJ, Jin GY, Han YM, Lee YS, Kweon KS. Solitary pulmonary nodule on helical dynamic CT scans: analysis of the enhancement patterns using a computer-aided diagnosis (CAD) system. Korean J Radiol 2009; 9:401-8. [PMID: 18838848 PMCID: PMC2627214 DOI: 10.3348/kjr.2008.9.5.401] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Objective We wanted to investigate the usefulness of a computer-aided diagnosis (CAD) system in assisting radiologists to diagnosis malignant solitary pulmonary nodules (SPNs), as compared with diagnosing SPNs with using direct personal drawing. Materials and Methods Forty patients with SPNs were analyzed. After the pre-contrast scan was performed, an additional ten series of post-contrast images were obtained at 20-second intervals. Two investigators measured the attenuation values of the SPNs: a radiologist who drew the regions of interest (ROIs), and a technician who used a CAD system. The Bland and Altman plots were used to compare the net enhancement between a CAD system and direct personal drawing. The diagnostic characteristics of the malignant SPNs were calculated by considering the CAD and direct personal drawing and with using Fisher's exact test. Results On the Bland and Altman plot, the net enhancement difference between the CAD system and direct personal drawing was not significant (within ± 2 standard deriation). The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of diagnosing malignant SPNs using CAD was 92%, 85%, 75%, 96% and 88%, respectively. The sensitivity, specificity, PPV, NPV and accuracy of diagnosing malignant SPNs using direct drawing was 92%, 89%, 79%, 92% and 88%, respectively. Conclusion The CAD system was a useful tool for diagnosing malignant SPNs.
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Affiliation(s)
- Eun Jung Choi
- Department of Radiology, Chonbuk National University Hospital and Medical School, Research Institute for Medical Science, Chonbuk, Korea
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