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Yoon SH, Goo JM, Yim JJ, Yoshiyama T, Flynn JL. CT and 18F-FDG PET abnormalities in contacts with recent tuberculosis infections but negative chest X-ray. Insights Imaging 2022; 13:112. [PMID: 35796839 PMCID: PMC9261169 DOI: 10.1186/s13244-022-01255-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/19/2022] [Indexed: 12/05/2022] Open
Abstract
Close contacts of individuals with pulmonary tuberculosis are at risk for tuberculosis infection and the development of active tuberculosis. In current contact investigations, immunologic tests (the tuberculin skin test and interferon-gamma release assay) and chest X-ray examinations are used to dichotomize contacts with Mycobacterium tuberculosis infections into those with active (X-ray abnormalities) versus latent tuberculosis (normal radiographs). This article is a critical review of computed tomographic (CT) and 18-fluorodeoxyglucose positron emission tomographic (PET) findings of incipient tuberculosis without X-ray abnormalities based on a systematic literature review of twenty-five publications. The CT and 18-fluorodeoxyglucose PET studies revealed minimal pauci-nodular infiltrations in the lung parenchyma and mediastinal lymph nodes abnormalities with metabolic uptake in approximately one-third of asymptomatic close contacts with negative chest radiographic and bacteriological/molecular results for active tuberculosis. Tuberculosis with minimal changes challenge the validity of simply dichotomizing cases of recent M. tuberculosis infections in contacts depending on the presence of X-ray abnormalities as the recent infections may spontaneously regress, remain stagnant, or progress to active tuberculosis in human and nonhuman primate studies. Whether contacts with tuberculosis with minimal changes are interpreted as having active tuberculosis or latent tuberculosis has clinical implications in terms of specific benefits and harms under the current contact management. Advanced imaging tools may help further stratify contacts intensely exposed to M. tuberculosis on a continuous spectrum from latent tuberculosis to incipient, subclinical and active tuberculosis. Identifying incipient tuberculosis would provide an opportunity for earlier and tailored treatment before active tuberculosis is established.
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Affiliation(s)
- Soon Ho Yoon
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.
| | - Jin Mo Goo
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.,Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Jae-Joon Yim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Takashi Yoshiyama
- Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan, Kiyose, Japan
| | - JoAnne L Flynn
- Department of Microbiology and Molecular Genetics and the Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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KAPLAN İ, CAN C, KÖMEK H, KEPENEK F, SOYLU H, ERDUR E, AGÜLOĞLU N, GÜNDOĞAN C. Is there an association between thyroid function tests and 18F FDG PET/CT parameters in untreated cancer patients? JOURNAL OF HEALTH SCIENCES AND MEDICINE 2022. [DOI: 10.32322/jhsm.1107903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Objectives: We aimed to investigate the association between the extent of disease, 18F FDG PET/CT parameters (SUVmax and the highest SUVmax) and thyroid function tests (TFT) (TSH, FT4, FT3, FT3/FT4 ratio, AntiTG, and AntiTPO) in untreated cancer patients.
Material and Method: One hundred and seventy-nine patients who underwent FDG PET/CT for metabolic characterization and staging in our clinic between May 2020 and November 2020 were included in the study. Patients were divided into two groups as malignant and benign according to histopathology findings. Thyroid function tests were ordered from all patients at the time of PET/CT imaging. The association between the presence of local lymph node metastasis, distant metastases and thyroid function tests as well as the association between PET/CT parameters and thyroid function tests in benign and malignant groups were statistically analyzed.
Results: Thyroid function tests did not exhibit a significant difference between patients with malignant and benign disease (p> 0.05). Univariate logistic regression analysis revealed that age, FT4 value, and the FT3/F4 ratio were significant parameters in predicting distant metastases. These parameters were also significant in predicting mortality. Multivariate logistic regression analysis showed that age was an independent prognostic factor predicting mortality.
Conclusion: Thyroid function tests are not decisive in differentiating malignant and benign lesions. While no statistically significant correlation was observed between thyroid function tests and PET/CT parameters, univariate analyses revealed that especially FT4 and FT3/FT4 ratio were significant in predicting disease extent and mortality in malignant disease. Age was found to be an independent prognostic factor in predicting mortality.
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Affiliation(s)
- İhsan KAPLAN
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF NUCLEAR MEDICINE
| | - Canan CAN
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF NUCLEAR MEDICINE
| | - Halil KÖMEK
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF NUCLEAR MEDICINE
| | - Ferat KEPENEK
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF NUCLEAR MEDICINE
| | - Hikmet SOYLU
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF INTERNAL MEDICINE, ENDOCRINOLOGY AND METABOLIC DISEASES
| | - Erkan ERDUR
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF INTERNAL MEDICINE, ONCOLOGY
| | - Nurşin AGÜLOĞLU
- UNIVERSITY OF HEALTH SCIENCES, İZMİR DR. SUAT SEREN HEALTH RESEARCH CENTER FOR PULMONOLOGY AND THORACIC SURGERY, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF NUCLEAR MEDICINE
| | - Cihan GÜNDOĞAN
- UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF NUCLEAR MEDICINE
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Vorster M, Sathekge MM. Positron Emission Tomography (PET) Imaging in Tuberculosis. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00097-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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An [18F]FDG-PET/CT deep learning method for fully automated detection of pathological mediastinal lymph nodes in lung cancer patients. Eur J Nucl Med Mol Imaging 2021; 49:881-888. [PMID: 34519888 PMCID: PMC8803782 DOI: 10.1007/s00259-021-05513-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 07/28/2021] [Indexed: 12/24/2022]
Abstract
Purpose The identification of pathological mediastinal lymph nodes is an important step in the staging of lung cancer, with the presence of metastases significantly affecting survival rates. Nodes are currently identified by a physician, but this process is time-consuming and prone to errors. In this paper, we investigate the use of artificial intelligence–based methods to increase the accuracy and consistency of this process. Methods Whole-body 18F-labelled fluoro-2-deoxyglucose ([18F]FDG) positron emission tomography/computed tomography ([18F]FDG-PET/CT) scans (Philips Gemini TF) from 134 patients were retrospectively analysed. The thorax was automatically located, and then slices were fed into a U-Net to identify candidate regions. These regions were split into overlapping 3D cubes, which were individually predicted as positive or negative using a 3D CNN. From these predictions, pathological mediastinal nodes could be identified. A second cohort of 71 patients was then acquired from a different, newer scanner (GE Discovery MI), and the performance of the model on this dataset was tested with and without transfer learning. Results On the test set from the first scanner, our model achieved a sensitivity of 0.87 (95% confidence intervals [0.74, 0.94]) with 0.41 [0.22, 0.71] false positives/patient. This was comparable to the performance of an expert. Without transfer learning, on the test set from the second scanner, the corresponding results were 0.53 [0.35, 0.70] and 0.24 [0.10, 0.49], respectively. With transfer learning, these metrics were 0.88 [0.73, 0.97] and 0.69 [0.43, 1.04], respectively. Conclusion Model performance was comparable to that of an expert on data from the same scanner. With transfer learning, the model can be applied to data from a different scanner. To our knowledge it is the first study of its kind to go directly from whole-body [18F]FDG-PET/CT scans to pathological mediastinal lymph node localisation. Supplementary Information The online version contains supplementary material available at 10.1007/s00259-021-05513-x.
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Özmen Ö, Tatci E, Demiröz ŞM, Tazeler Z, Demirağ F. Is 18F-FDG PET/CT capable of differential diagnosis from tuberculous pleurisy from malignant mesothelioma? Nucl Med Commun 2021; 42:672-677. [PMID: 33625184 DOI: 10.1097/mnm.0000000000001375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM 18F-Fluorodeoxyglucose (FDG) PET/computerized tomography (CT) is a valuable method in the diagnosis of malignant pleural mesothelioma (MPM). But, some infections, particularly tuberculosis, are known to mimic cancer. We aimed to compare the FDG PET/CT findings of tuberculosis pleurisy (TP) and malignant mesothelioma and evaluate its role of differential diagnosis. MATERIAL AND METHOD We retrospectively reviewed the data from 85 patients (45 patients with MPM and 40 patients with TP) who underwent FDG PET/CT. All images were reevaluated and pleural thickening, maximum standardized uptake values (SUVmax), lymphatic uptake and accompanying parenchymal findings were noted. RESULTS There was no significant difference in age and sex between the two groups. Pleural thickening was more prominent in the MPM group. Mean pleural thickness was 21.4 ± 18.6 mm in the MPM group and 6.8 ± 3.5 mm in the TP group (P = 0.0). Besides pleural pathology, lymph nodes involvement in the thoracic (P = 0.0) and extrathoracic area (P = 0.34) and parenchymal findings were prominent in the TP group (P = 0.0). However, there was no significant difference in pleural SUVmax values between the two groups (P = 0.61). CONCLUSION Intense pleural FDG uptake can be observed in TP like malignant mesothelioma. For the evaluation of the pleural pathologies in the tuberculosis endemic countries, it should be considered that FDG PET/CT may have false-positive results. Evaluation of increased pleural FDG uptake together with the detected parenchymal findings and lymphatic involvement may help us to make more accurate interpretation of the diagnosis.
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Affiliation(s)
| | | | | | | | - Funda Demirağ
- Pathology, University of Health Sciences Atatürk Chest Diseases and Thoracic Surgery Training and Research Hospital, Ankara, Turkey
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6
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Liam CK, Liam YS, Poh ME, Wong CK. Accuracy of lung cancer staging in the multidisciplinary team setting. Transl Lung Cancer Res 2020; 9:1654-1666. [PMID: 32953539 PMCID: PMC7481640 DOI: 10.21037/tlcr.2019.11.28] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Accurate staging of lung cancer is of utmost importance in determining the stage-appropriate treatment and prognosis. Imaging tests which include contrast-enhanced computed tomography (CT) examination of the chest to include the liver and adrenal glands and 18-fluoro-2 deoxyglucose positron emission tomography (PET)/CT scan facilitate the initial tumor node metastasis (TNM) staging of the disease and provide guidance on the optimal biopsy site and biopsy method. The diagnostic and staging approach should be tailored to the individual patient according to risk, benefit, patient preferences, and available expertise. Diagnosis and staging should preferably be accomplished with a single procedure or the least number of invasive procedures if more than one is needed. Ideally, centers managing lung cancer patients should have a multidisciplinary thoracic oncology board prescribing personalized evidence-based management tailored to each individual patient. Multidisciplinary team (MDT) meetings provide a platform for key experts from various disciplines to contribute specific advice on the management of each individual patient. As assessment of mediastinal lymph node involvement is an important component of lung cancer staging, optimal mediastinal staging can be achieved with a variety of techniques that can be discussed and performed by the various specialists in the MDT. Despite a relative paucity of quality evidence that MDT contributes to improvements in lung cancer survival outcomes, this approach has evolved to become the standard of care in many centers around the world. Thoracic MDT has resulted in more focused and timely investigations for histopathologic diagnosis and disease staging which translate into earlier treatment initiation. Moreover, there is increasing evidence that MDT care facilitates and allows access to investigations that lead to improved accuracy of tumor and nodal staging. However, there is still a paucity of evidence on the accuracy of lung cancer staging in the MDT setting.
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Affiliation(s)
- Chong-Kin Liam
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yong-Sheng Liam
- Clinical Investigation Centre, University Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - Mau-Ern Poh
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Chee-Kuan Wong
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Usefulness of Positron Emission Tomography in the Examination of Hilar and Mediastinal Lymphadenopathies in Patients with Suspicion of Lung Cancer. Can Respir J 2020; 2020:7909543. [PMID: 32587645 PMCID: PMC7294363 DOI: 10.1155/2020/7909543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/08/2020] [Indexed: 12/25/2022] Open
Abstract
Introduction Lung cancer is a major health problem. Mediastinal staging performed with the aid of imaging techniques is essential for appropriate disease treatment and prognosis. Accordingly, this study aimed to ascertain the usefulness of positron emission tomography (PET) in mediastinal staging, establish the best maximum standardized uptake value (SUVmax) cutoff point, compare its usefulness to that of computed tomography (CT), and determine the influence of histological tumour subtype. Methods We conducted a retrospective study across a period of 3 years on 128 patients with suspicion of lung cancer and analyzed their demographic and radiological characteristics using CT and PET to perform the mediastinal examination. Histology was regarded as the gold standard. Results PET displayed a high sensitivity (95%) and negative predictive value (NPV) (92%), outperforming CT (89% and 85%, respectively). Percentage agreement with histology was also higher (0.207 and 0.241 for CT and PET, respectively; p < 0.001). Taking an SUVmax value of 0.5 as that which would ensure greatest diagnostic accuracy, S and NPV were 100%, though percentage agreement did not increase (0.189; p < 0.001). PET discriminatory power was not affected by histological tumour subtype. Conclusions The results of our study indicate that PET might be a useful test for examination of the mediastinum in lung cancer patients. Its high NPV suggests that the absence of mediastinal uptake could be used to proceed to surgical treatment without the need for further tests or examinations. Nevertheless, studies directly aimed to answer this specific question are needed.
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Sha X, Gong G, Qiu Q, Duan J, Li D, Yin Y. Discrimination of mediastinal metastatic lymph nodes in NSCLC based on radiomic features in different phases of CT imaging. BMC Med Imaging 2020; 20:12. [PMID: 32024469 PMCID: PMC7003415 DOI: 10.1186/s12880-020-0416-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 01/27/2020] [Indexed: 12/13/2022] Open
Abstract
Background We aimed to develop radiomic models based on different phases of computed tomography (CT) imaging and to investigate the efficacy of models for diagnosing mediastinal metastatic lymph nodes (LNs) in non-small cell lung cancer (NSCLC). Methods Eighty-six NSCLC patients were enrolled in this study, and we selected 231 mediastinal LNs confirmed by pathology results as the subjects which were divided into training (n = 163) and validation cohorts (n = 68). The regions of interest (ROIs) were delineated on CT scans in the plain phase, arterial phase and venous phase, respectively. Radiomic features were extracted from the CT images in each phase. A least absolute shrinkage and selection operator (LASSO) algorithm was used to select features, and multivariate logistic regression analysis was used to build models. We constructed six models (orders 1–6) based on the radiomic features of the single- and dual-phase CT images. The performance of the radiomic model was evaluated by the area under the receiver operating characteristic curve (AUC), sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV). Results A total of 846 features were extracted from each ROI, and 10, 9, 5, 2, 2, and 9 features were chosen to develop models 1–6, respectively. All of the models showed excellent discrimination, with AUCs greater than 0.8. The plain CT radiomic model, model 1, yielded the highest AUC, specificity, accuracy and PPV, which were 0.926 and 0.925; 0.860 and 0.769; 0.871 and 0.882; and 0.906 and 0.870 in the training and validation sets, respectively. When the plain and venous phase CT radiomic features were combined with the arterial phase CT images, the sensitivity increased from 0.879 and 0.919 to 0.949 and 0979 and the NPV increased from 0.821 and 0.789 to 0.878 and 0.900 in the training group, respectively. Conclusions All of the CT radiomic models based on different phases all showed high accuracy and precision for the diagnosis of LN metastasis (LNM) in NSCLC patients. When combined with arterial phase CT, the sensitivity and NPV of the model was be further improved.
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Affiliation(s)
- Xue Sha
- Shandong Key Laboratory of Medical Physics and Image Processing & Shandong Provincial Engineering and Technical Center of Light Manipulations, School of Physics and Electronics, Shandong Normal University, Jinan, 250358, China
| | - Guanzhong Gong
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No.440, Jiyan Road, Jinan, 250117, Shandong, China
| | - Qingtao Qiu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No.440, Jiyan Road, Jinan, 250117, Shandong, China
| | - Jinghao Duan
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No.440, Jiyan Road, Jinan, 250117, Shandong, China
| | - Dengwang Li
- Shandong Key Laboratory of Medical Physics and Image Processing & Shandong Provincial Engineering and Technical Center of Light Manipulations, School of Physics and Electronics, Shandong Normal University, Jinan, 250358, China
| | - Yong Yin
- Shandong Key Laboratory of Medical Physics and Image Processing & Shandong Provincial Engineering and Technical Center of Light Manipulations, School of Physics and Electronics, Shandong Normal University, Jinan, 250358, China. .,Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No.440, Jiyan Road, Jinan, 250117, Shandong, China.
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Li H, Wang X, Zhang L, Yi X, Qiao Y, Jin Q. Correlations between maximum standardized uptake value measured via 18F-fluorodeoxyglucose positron emission tomography/computed tomography and clinical variables and biochemical indicators in adult lymphoma. J Cancer Res Ther 2020; 15:1581-1588. [PMID: 31939441 DOI: 10.4103/jcrt.jcrt_671_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objectives The aim of the current study was to investigate whether the maximum standardized uptake value (SUVmax) measured by 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/computed tomography (CT) could discriminate between aggressive and indolent non-Hodgkin lymphomas (NHLs) and correlations between the SUVmax and clinical variables and serum biochemical indicators in adult lymphoma. Methods A total of 103 patients with lymphoma confirmed by biopsy, pretreatment 18F-FDG PET/CT scans, and a complete medical record were retrospectively enrolled in the study. Clinical variables that were evaluated included stage, pathological subtype, International Prognostic Index (IPI) score, and Ki-67 index, as well as serum biochemical indicators (e.g., lactate dehydrogenase [LDH] and erythrocyte sedimentation rate [ESR]) and metabolic parameters (e.g., SUVmax of the biopsy site on PET/CT). Correlations between SUVmax and clinical variables and serum biochemical indicators were investigated. Results Of the 103 patients, 84 had NHL and 19 had Hodgkin lymphoma. The area under the receiver operating characteristic curve for examining the accuracy of SUVmax with regard to distinguishing between aggressive and indolent NHLs was 0.94 (95% confidence interval: 0.89-0.99), suggesting that SUVmax was a useful predictor of diagnosis. A cutoff value of 8.5 yielded a sensitivity of 76.3% and specificity of 92.0%. The SUVmax mean ± standard deviation of NHL (9.8 ± 6.0, range: 1.8-28.1) was higher than that of HL (7.5 ± 2.8, range: 3.5-13.9) (P = 0.016), but there was no statistically significant difference in SUVmax between NHL and HL (P > 0.05). SUVmax of the biopsy site was strongly positively correlated with Ki-67 index (r = 0.813, P < 0.001) and moderately positively correlated with IPI score (r = 0.332, P = 0.002), but it was not significantly correlated with clinical stage, LDH, or ESR (P > 0.05). Conclusions 18F-FDG PET/CT may yield reliable measurements of tumor proliferation, and an SUVmax >8.5 may distinguish between aggressive and indolent NHLs. In adults with newly diagnosed lymphoma, SUVmax correlates with Ki-67 index and IPI score.
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Affiliation(s)
- Hongling Li
- Lanzhou University; Department of Oncology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Xiaohuan Wang
- Department of Oncology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Lingfang Zhang
- Department of Oncology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Xuemei Yi
- Department of Oncology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Yujie Qiao
- Department of Oncology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Qianqian Jin
- Department of Oncology, Gansu Provincial Hospital, Lanzhou, Gansu, China
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Dejima H, Kuroda H, Oya Y, Sakakura N, Inaba Y, Tamaki T, Yatabe Y, Sakao Y. Evaluation of lobar lymph node metastasis in non-small cell lung carcinoma using modified total lesion glycolysis. J Thorac Dis 2019; 10:6932-6941. [PMID: 30746239 DOI: 10.21037/jtd.2018.11.40] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Volumetric parameters based on 3-dimensional reconstruction have recently been introduced for cancer staging. We aimed to improve the ability to diagnose hilar lymph node metastasis in patients with non-small cell lung cancer. Methods We evaluated 142 patients with non-small cell lung cancer who underwent right upper lobectomy and radical lymph node dissection. Metastatic involvement of right upper lobar lymph nodes was assessed using high-resolution computed tomography (HRCT) and 18F-2-floro-2-deoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT). Results On receiver operating characteristic (ROC) curve analysis, the area under the curves (AUC) for short axis, maximum of standardized uptake value (SUVmax), total lesion glycolysis (TLG) and modified TLG (mTLG) were 0.79, 0.77, 0.76, and 0.87, respectively. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of mTLG, using the optimal cut off value (2.45), for diagnosis of lobar lymph node metastasis were 71%, 88%, 44%, and 96%, respectively. Hilar asymmetric uptake (HAU) of FDG was larger in true-positive cases than in false-negative cases (P<0.01). Furthermore, the size of metastatic foci in the lymph node was smaller in false-negative cases (P=0.012). Conclusions Modified TLG is a good parameter to diagnose metastatic right upper lobar lymph nodes. Micrometastasis in the lymph node is difficult to predict using the current diagnostic method. However, more careful evaluation is required in patients with symmetric FDG accumulation at hilar region because hilar lymph nodes respond to various causes such as benign pulmonary diseases.
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Affiliation(s)
- Hitoshi Dejima
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan.,Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Hiroaki Kuroda
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yuko Oya
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Noriaki Sakakura
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yoshitaka Inaba
- Department of Diagnostic and Interventional Radiology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Tsuneo Tamaki
- Nagoya Radiological Diagnosis Foundation, Nagoya, Japan
| | - Yasushi Yatabe
- Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yukinori Sakao
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
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Werutsky G, Hochhegger B, Lopes de Figueiredo Pinto JA, Martínez-Mesa J, Zanini ML, Berdichevski EH, Vilas E, da Silva VD, Tsukazan MTR, Vieira A, Fritscher LG, Hartmann L, Alba M, Sartori G, Matushita C, Bortolotto V, do Amaral RR, Junior LCA, Zaffaroni F, Barrios CH, Debiasi M, Frietscher CC. PET-CT has low specificity for mediastinal staging of non-small-cell lung cancer in an endemic area for tuberculosis: a diagnostic test study (LACOG 0114). BMC Cancer 2019; 19:5. [PMID: 30606144 PMCID: PMC6318867 DOI: 10.1186/s12885-018-5233-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 12/19/2018] [Indexed: 12/18/2022] Open
Abstract
Background The present study aims to assess the performance of 18F-FDG PET-CT on mediastinal staging of non-small cell lung cancer (NSCLC) in a location with endemic granulomatous infectious disease. Methods Diagnostic test study including patients aged 18 years or older with operable stage I-III NSCLC and indication for a mediastinal lymph node biopsy. All patients underwent a 18F-FDG PET-scan before invasive mediastinal staging, either through mediastinoscopy or thoracotomy, which was considered the gold-standard. Surgeons and pathologists were blinded for scan results. Primary endpoint was to evaluate sensitivity, specificity and positive and negative predictive values of PET-CT with images acquired in the 1st hour of the exam protocol, using predefined cutoffs of maximal SUV, on per-patient basis. Results Overall, 85 patients with operable NSCLC underwent PET-CT scan followed by invasive mediastinal staging. Mean age was 65 years, 49 patients were male and 68 were white. One patient presented with active tuberculosis and none had HIV infection. Using any SUV_max > 0 as qualitative criteria for positivity, sensitivity and specificity were 0.87 and 0.45, respectively. Nevertheless, even when the highest SUV cut-off was used (SUV_max ≥5), specificity remained low (0.79), with an estimated positive predictive value of 54%. Conclusions Our findings are in line with the most recent publications and guidelines, which recommend that PET-CT must not be solely used as a tool to mediastinal staging, even in a region with high burden of tuberculosis. Trial registration The LACOG 0114 study was registered at ClinicalTrials.gov, before study initiation, under identifier NCT02664792.
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Affiliation(s)
- Gustavo Werutsky
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil.
| | - Bruno Hochhegger
- Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | | | - Eduardo Vilas
- Brain Institute of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | - Arthur Vieira
- Hospital São Lucas, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | - Marcos Alba
- Brain Institute of Rio Grande do Sul, Porto Alegre, Brazil
| | - Guilherme Sartori
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil
| | | | - Vanessa Bortolotto
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil
| | - Rayssa Ruszkowski do Amaral
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil
| | | | - Facundo Zaffaroni
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil
| | - Carlos H Barrios
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil
| | - Márcio Debiasi
- Latin American Cooperative Oncology Group (LACOG), Ipiranga Avenue 6681, 99A, Room 806, Porto Alegre, Brazil
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12
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Ho JCM, Leung CC. Management of co-existent tuberculosis and lung cancer. Lung Cancer 2018; 122:83-87. [PMID: 30032851 DOI: 10.1016/j.lungcan.2018.05.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/31/2018] [Accepted: 05/31/2018] [Indexed: 12/18/2022]
Abstract
Tuberculosis (TB) and lung cancer are important global health threats, each accounting for 1.6 million deaths yearly. The incidence of both conditions remains high in many developing countries, especially in East Asia. There is now epidemiologic evidence that pre-existing TB poses an increased lung cancer risk. The clinical diagnosis of co-existent TB and lung cancer relies on symptoms of infection, typical radiological features and microbiological confirmation, and remains a challenge in both early and late stage lung cancer. The presence of histological granulomatous inflammation in resected lung specimens is not exclusively indicative of TB. The widely accepted systemic chemotherapy and immunotherapy for treating lung cancer are highly relevant to the occurrence of TB and its management. This review addresses the clinical approach to the diagnosis and treatment of TB that co-exists with lung cancer.
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Affiliation(s)
- James Chung-Man Ho
- Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China.
| | - Chi-Chiu Leung
- Tuberculosis and Chest Service, Department of Health, Hong Kong SAR, China
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13
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Yang X, Pan X, Liu H, Gao D, He J, Liang W, Guan Y. A new approach to predict lymph node metastasis in solid lung adenocarcinoma: a radiomics nomogram. J Thorac Dis 2018; 10:S807-S819. [PMID: 29780627 DOI: 10.21037/jtd.2018.03.126] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Lymph node metastasis (LNM) of lung cancer is an important factor related to survival and recurrence. The association between radiomics features of lung cancer and LNM remains unclear. We developed and validated a radiomics nomogram to predict LNM in solid lung adenocarcinoma. Methods A total of 159 eligible patients with solid lung adenocarcinoma were divided into training (n=106) and validation cohorts (n=53). Radiomics features were extracted from venous-phase CT images. We built a radiomics nomogram using a multivariate logistic regression model combined with CT-reported lymph node (LN) status. The performance of the radiomics nomogram was evaluated using the area under curve (AUC) of receiver operating characteristic curve. We performed decision curve analysis (DCA) within training and validation cohorts to assess the clinical usefulness of the nomogram. Results Fourteen radiomics features were chosen from 94 candidate features to build a radiomics signature that significantly correlated with LNM. The model showed good calibration and discrimination in the training cohort, with an AUC of 0.871 (95% CI: 0.804-0.937), sensitivity of 85.71% and specificity of 77.19%. In the validation cohort, AUC was 0.856 (95% CI: 0.745-0.966), sensitivity was 91.66%, and specificity was 82.14%. DCA demonstrated that the nomogram was clinically useful. The nomogram also showed good predictive ability in patients at high risk for LNM in the CT-reported LN negative (cN0) subgroup. Conclusions The radiomics nomogram, based on preoperative CT images, can be used as a noninvasive method to predict LNM in patients with solid lung adenocarcinoma.
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Affiliation(s)
- Xinguan Yang
- Department of Radiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China.,National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, Guangzhou 510000, China
| | - Xiaohuan Pan
- Department of Radiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China.,National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, Guangzhou 510000, China
| | - Hui Liu
- 12 Sigma Technologies, Shanghai 200000, China
| | - Dashan Gao
- 8910 University Center Ln, #420, San Diego, CA, USA.,12 Sigma Technologies, San Diego, CA, USA
| | - Jianxing He
- National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, Guangzhou 510000, China.,Department of Thoracic Surgery and Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Wenhua Liang
- National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, Guangzhou 510000, China.,Department of Thoracic Surgery and Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yubao Guan
- Department of Radiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China.,National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, Guangzhou 510000, China
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14
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Wang H, Zhou Z, Li Y, Chen Z, Lu P, Wang W, Liu W, Yu L. Comparison of machine learning methods for classifying mediastinal lymph node metastasis of non-small cell lung cancer from 18F-FDG PET/CT images. EJNMMI Res 2017; 7:11. [PMID: 28130689 PMCID: PMC5272853 DOI: 10.1186/s13550-017-0260-9] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 01/19/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND This study aimed to compare one state-of-the-art deep learning method and four classical machine learning methods for classifying mediastinal lymph node metastasis of non-small cell lung cancer (NSCLC) from 18F-FDG PET/CT images. Another objective was to compare the discriminative power of the recently popular PET/CT texture features with the widely used diagnostic features such as tumor size, CT value, SUV, image contrast, and intensity standard deviation. The four classical machine learning methods included random forests, support vector machines, adaptive boosting, and artificial neural network. The deep learning method was the convolutional neural networks (CNN). The five methods were evaluated using 1397 lymph nodes collected from PET/CT images of 168 patients, with corresponding pathology analysis results as gold standard. The comparison was conducted using 10 times 10-fold cross-validation based on the criterion of sensitivity, specificity, accuracy (ACC), and area under the ROC curve (AUC). For each classical method, different input features were compared to select the optimal feature set. Based on the optimal feature set, the classical methods were compared with CNN, as well as with human doctors from our institute. RESULTS For the classical methods, the diagnostic features resulted in 81~85% ACC and 0.87~0.92 AUC, which were significantly higher than the results of texture features. CNN's sensitivity, specificity, ACC, and AUC were 84, 88, 86, and 0.91, respectively. There was no significant difference between the results of CNN and the best classical method. The sensitivity, specificity, and ACC of human doctors were 73, 90, and 82, respectively. All the five machine learning methods had higher sensitivities but lower specificities than human doctors. CONCLUSIONS The present study shows that the performance of CNN is not significantly different from the best classical methods and human doctors for classifying mediastinal lymph node metastasis of NSCLC from PET/CT images. Because CNN does not need tumor segmentation or feature calculation, it is more convenient and more objective than the classical methods. However, CNN does not make use of the import diagnostic features, which have been proved more discriminative than the texture features for classifying small-sized lymph nodes. Therefore, incorporating the diagnostic features into CNN is a promising direction for future research.
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Affiliation(s)
- Hongkai Wang
- Department of Biomedical Engineering, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, No. 2 Linggong Street, Ganjingzi District, Dalian, Liaoning, 116024, China
| | - Zongwei Zhou
- Department of Biomedical Informatics and the College of Health Solutions, Arizona State University, 13212 East Shea Boulevard, Scottsdale, AZ, 85259, USA
| | - Yingci Li
- Center of PET/CT, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, Heilongjiang Province, 150081, China
| | - Zhonghua Chen
- Department of Biomedical Engineering, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, No. 2 Linggong Street, Ganjingzi District, Dalian, Liaoning, 116024, China
| | - Peiou Lu
- Center of PET/CT, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, Heilongjiang Province, 150081, China
| | - Wenzhi Wang
- Center of PET/CT, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, Heilongjiang Province, 150081, China
| | - Wanyu Liu
- HIT-INSA Sino French Research Centre for Biomedical Imaging, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China
| | - Lijuan Yu
- Center of PET/CT, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, Heilongjiang Province, 150081, China.
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15
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Positron emission tomography and computed tomographic imaging (PET/CT) for dose planning purposes of thoracic radiation with curative intent in lung cancer patients: A systematic review and meta-analysis. Radiother Oncol 2017; 123:71-77. [DOI: 10.1016/j.radonc.2017.02.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 02/07/2017] [Accepted: 02/20/2017] [Indexed: 12/25/2022]
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16
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Bustos García de Castro A, Ferreirós Domínguez J, Delgado Bolton R, Fernández Pérez C, Cabeza Martínez B, García García-Esquinas M, Carreras Delgado J. PET-CT in presurgical lymph node staging in non-small cell lung cancer: The importance of false-negative and false-positive findings. RADIOLOGIA 2017. [DOI: 10.1016/j.rxeng.2016.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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PET-CT in presurgical lymph node staging in non-small cell lung cancer: the importance of false-negative and false-positive findings. RADIOLOGIA 2017; 59:147-158. [PMID: 28238444 DOI: 10.1016/j.rx.2016.12.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 11/28/2016] [Accepted: 12/05/2016] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To assess the importance of false-negative and false-positive findings in computed tomography (CT) and 18F-FDG positron emission tomography (PET) in mediastinal lymph node staging in patients undergoing surgery for non-small cell lung cancer (NSCLC). MATERIAL AND METHODS This retrospective study included 113 consecutive patients and 120 resected NSCLCs; 22 patients received neoadjuvant treatment. We compared the findings on preoperative 18F-FDG PET-CT studies with the postoperative pathology findings. Lymph node size and primary tumor size were measured with CT, and lymph nodes and primary tumors were evaluated qualitatively and semiquantitatively (using standardized uptake values (SUVmax)) with PET. RESULTS Metastatic lymph nodes were found in 26 (21.7%) of the 120 tumors and in 41 (7.7%) of the 528 lymph node stations analyzed. 18F-FDG PET-CT yielded 53.8% sensitivity, 76.6% specificity, 38.9% positive predictive value, 85.7% negative predictive value, and 71.7% diagnostic accuracy. The false-negative rate was 14.2%. Multivariable analysis found that the factors associated with false-negative findings were a moderate degree of differentiation in the primary tumor (p = 0.005) and an SUVmax of the primary tumor >4 (p = 0.027). The false-positive rate was 61.1%, and the multivariable analysis found that lymph node size >1cm was associated with false-positive findings (p < 0.001). CONCLUSIONS In mediastinal lymph node staging in patients with NSCLC, 18F-FDG PET-CT improves the specificity and negative predictive value and helps clinicians to select the patients that will benefit from surgery. Given the high rate of false positives, histological confirmation of positive cases is recommendable.
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Berberoğlu K. Use of Positron Emission Tomography/Computed Tomography in Radiation Treatment Planning for Lung Cancer. Mol Imaging Radionucl Ther 2016; 25:50-62. [PMID: 27277321 PMCID: PMC5096621 DOI: 10.4274/mirt.19870] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Radiotherapy (RT) plays an important role in the treatment of lung cancer. Accurate diagnosis and staging are crucial in the delivery of RT with curative intent. Target miss can be prevented by accurate determination of tumor contours during RT planning. Currently, tumor contours are determined manually by computed tomography (CT) during RT planning. This method leads to differences in delineation of tumor volume between users. Given the change in RT tools and methods due to rapidly developing technology, it is now more significant to accurately delineate the tumor tissue. F18 fluorodeoxyglucose positron emission tomography/CT (F18 FDG PET/CT) has been established as an accurate method in correctly staging and detecting tumor dissemination in lung cancer. Since it provides both anatomic and biologic information, F18 FDG PET decreases inter-user variability in tumor delineation. For instance, tumor volumes may be decreased as atelectasis and malignant tissue can be more accurately differentiated, as well as better evaluation of benign and malignant lymph nodes given the difference in FDG uptake. Using F18 FDG PET/CT, the radiation dose can be escalated without serious adverse effects in lung cancer. In this study, we evaluated the contribution of F18 FDG PET/CT for RT planning in lung cancer.
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Affiliation(s)
- Kezban Berberoğlu
- Anadolu Medical Center, Clinic of Nuclear Medicine, İstanbul, Turkey, Phone: +90 532 584 62 56 E-mail:
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19
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Nam KB, Kim TJ, Park JS, Chung MJ, Lee KW. Long-Term Follow-Up Results From PET/CT Surveillance After Surgical Resection of Lung Adenocarcinoma Manifesting as Ground-Glass Opacity. Medicine (Baltimore) 2016; 95:e2634. [PMID: 26825922 PMCID: PMC5291592 DOI: 10.1097/md.0000000000002634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The purpose of our study was to retrospectively evaluate the value of F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) for postoperative surveillance of lung adenocarcinoma manifesting as ground-glass opacity (GGO).From May 2003 to December 2007, 111 patients with surgically resected lung adenocarcinoma manifesting as GGO were included. Clinical findings of recurrence and survival, CT features, and maximum standardized uptake value (SUVmax) were reviewed and compared among 3 groups according to GGO proportion: Group I, GGO 100%; Group II, GGO ≥50%; Group III, GGO < 50%. Disease-free survival (DFS) was estimated using the Kaplan-Meier method. Diagnostic performances of CT and PET/CT for recurrence were compared during a long-term follow-up period of >5 years.Recurrence was identified in Group III (18 of 53, 34%) but not in Groups I (n = 25) or II (n = 33) over a mean follow-up period of 74 months. Group showed significant differences in GGO proportion, SUVmax, and DFS duration (P < 0.001). PET/CT led to 6 false-positive and 5 false-negative interpretations of recurrence. For surveillance CT, sensitivity, specificity, accuracy, positive predictive value, and negative predictive value were 94.4%, 98.6%, 98.2%, 94.4%, and 98.9%, respectively; for PET/CT, sensitivity, specificity, accuracy, positive predictive value, and negative predictive value were 72.2%, 92.3%, 88.5%, 68.4%, and 93.5%, respectively. CT showed significantly higher accuracy than PET/CT (P = 0.0188).FDG-PET/CT showed no clear advantage for postoperative surveillance of lung cancer with predominant GGO because of low incidence of recurrence and frequent false-positive and false-negative results.
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Affiliation(s)
- Kyung Bum Nam
- From the Department of Radiology, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si (KBN, TJK, KWL); and Department of Biochemistry, College of Medicine, Dankook University, Cheonan, Korea (J-SP)
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Yoon SH, Goo JM, Lee SM, Park CM, Cheon GJ. PET/MR Imaging for Chest Diseases. Magn Reson Imaging Clin N Am 2015; 23:245-59. [DOI: 10.1016/j.mric.2015.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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21
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Huang Z, Xie DH, Guo L, Hu CH, Fang X, Meng Q, Ping XX, Lu ZW. The utility of MRI for pre-operative T and N staging of gastric carcinoma: a systematic review and meta-analysis. Br J Radiol 2015; 88:20140552. [PMID: 25790060 DOI: 10.1259/bjr.20140552] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To perform a meta-analysis and literature review regarding the diagnostic accuracy of MRI for pre-operative tumour depth invasion (T) and regional lymph node invasion (N) staging of gastric carcinoma (GC). METHODS Articles were identified through systematic search of Medline, PubMed, Cochrane Library, Web of Science, Springerlink and several Chinese databases. The study quality was assessed by the quality assessment for studies of diagnostic accuracy. 2 reviewers independently extracted and assessed the data from 11 eligible studies. A meta-analysis was then carried out. Subgroup and sensitivity analyses were also performed. RESULTS 11 studies (439 patients) were finally included in the current review. Among these studies, the significant evidence of heterogeneity was only discovered for specificity in T4 stage (I(2) = 59.8%). Pooled sensitivity and specificity of MRI to diagnose T stage tumour (T3-4 vs T1-2) were 0.93 [95% confidence interval (CI), 0.89-0.96] and 0.91 (95% CI, 0.87-0.95), respectively. Pooled estimates of sensitivity and specificity of MRI to diagnose N stage tumour (N0 vs N+) were 0.86 (95% CI, 0.80-0.92) and 0.67 (95% CI, 0.54-0.79), respectively. Subgroup analyses showed that diffusion-weighted imaging was more helpful for T staging. CONCLUSION The present systematic review suggests that MRI has a good diagnostic accuracy for pre-operative T staging of GC and should be widely used in clinical work. However, the ability for N staging is relatively poor on MRI. ADVANCES IN KNOWLEDGE In the pre-operative staging of GC, MRI was a useful tool and may enhance accuracy for the T staging of advanced GC.
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Affiliation(s)
- Z Huang
- Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, China
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22
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Liam CK, Andarini S, Lee P, Ho JCM, Chau NQ, Tscheikuna J. Lung cancer staging now and in the future. Respirology 2015; 20:526-34. [PMID: 25682805 DOI: 10.1111/resp.12489] [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: 08/18/2014] [Revised: 11/24/2014] [Accepted: 12/29/2014] [Indexed: 12/24/2022]
Abstract
For a long time lung cancer was associated with a fatalistic approach by healthcare professionals. In recent years, advances in imaging, improved diagnostic techniques and more effective treatment modalities are reasons for optimism. Accurate lung cancer staging is vitally important because treatment options and prognosis differ significantly by stage. The staging algorithm should include a contrast computed tomography (CT) of the chest and the upper abdomen including adrenals, positron emission tomography/CT for staging the mediastinum and to rule out extrathoracic metastasis in patients considered for surgical resection, endosonography-guided needle sampling procedure replacing mediastinoscopy for near complete mediastinal staging, and brain imaging as clinically indicated. Applicability of evidence-based guidelines for staging of lung cancer depends on the available expertise and level of resources and is directly impacted by financial issues. Considering the diversity of healthcare infrastructure and economic performance of Asian countries, optimal and cost-effective use of staging methods appropriate to the available resources is prudent. The pulmonologist plays a central role in the multidisciplinary approach to lung cancer diagnosis, staging and management. Regional respiratory societies such as the Asian Pacific Society of Respirology should work with national respiratory societies to strive for uniform standards of care. For developing countries, a minimum set of care standards should be formulated. Cost-effective delivery of optimal care for lung cancer patients, including staging within the various healthcare systems, should be encouraged and most importantly, tobacco control implementation should receive an absolute priority status in all countries in Asia.
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Affiliation(s)
- Chong-Kin Liam
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Update on nodal staging in non-small cell lung cancer with integrated positron emission tomography/computed tomography: a meta-analysis. Ann Nucl Med 2015; 29:409-19. [DOI: 10.1007/s12149-015-0958-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 02/01/2015] [Indexed: 11/26/2022]
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Im HJ, Pak K, Cheon GJ, Kang KW, Kim SJ, Kim IJ, Chung JK, Kim EE, Lee DS. Prognostic value of volumetric parameters of (18)F-FDG PET in non-small-cell lung cancer: a meta-analysis. Eur J Nucl Med Mol Imaging 2014; 42:241-51. [PMID: 25193652 DOI: 10.1007/s00259-014-2903-7] [Citation(s) in RCA: 175] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 08/25/2014] [Indexed: 12/14/2022]
Abstract
PURPOSE We conducted a comprehensive systematic review of the literature on volumetric parameters from (18)F-FDG PET and a meta-analysis of the prognostic value of metabolic tumour volume (MTV) and total lesion glycolysis (TLG) in patients with lung cancer. METHODS A systematic search of MEDLINE and EMBASE was performed using the keywords "positron emission tomography (PET)", "lung cancer", and "volume". Inclusion criteria were: (18)F-FDG PET used as an initial imaging tool; studies limited to non-small-cell lung cancer (NSCLC); volume measurement of lung cancer; patients who had not undergone surgery, chemotherapy, or radiotherapy before the PET scan; and studies that reported survival data. Event-free survival and overall survival were evaluated as outcomes. The impact of MTV and TLG on survival was measured in terms of the hazard ratio (HR) effect size. Data from each study were analysed using Review Manager 5.2. RESULTS Thirteen eligible studies including 1,581 patients were analysed. Patients with high MTV showed a worse prognosis with an HR of 2.71 (95% CI 1.82 - 4.02, p < 0.00001) for adverse events and an HR of 2.31 (95% CI 1.54 - 3.47, p < 0.00001) for death. Patients with high TLG also showed a worse prognosis with an HR of 2.35 (95% CI 1.91 - 2.89, p < 0.00001) for adverse events and an HR of 2.43 (95% CI 1.89 - 3.11, p < 0.00001) for death. The prognostic value of MTV and TLG remained significant in a subgroup analysis according to TNM stage as well as the methods for defining cut-off values and tumour delineation. CONCLUSION Volumetric parameters from (18)F-FDG PET are significant prognostic factors for outcome in patients with NSCLC. Patients with a high MTV or TLG are at higher risk of adverse events and death. MTV and TLG were significant prognostic factors in patients with TNM stage I/II and stage III/IV NSCLC.
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Affiliation(s)
- Hyung-Jun Im
- Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
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Chaukar D, Dandekar M, Kane S, Arya S, Purandare N, Rangarajan V, Deshmukh A, Pai P, Chaturvedi P, D'Cruz A. Relative value of ultrasound, computed tomography and positron emission tomography imaging in the clinically node-negative neck in oral cancer. Asia Pac J Clin Oncol 2014; 12:e332-8. [DOI: 10.1111/ajco.12255] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Devendra Chaukar
- Department of Head and Neck Surgery; Tata Memorial Hospital; Mumbai India
| | - Mitali Dandekar
- Department of Head and Neck Surgery; Tata Memorial Hospital; Mumbai India
| | - Shubhada Kane
- Department of Pathology; Tata Memorial Hospital; Mumbai India
| | - Supreeta Arya
- Department of Radiology; Tata Memorial Hospital; Mumbai India
| | | | | | - Anuja Deshmukh
- Department of Head and Neck Surgery; Tata Memorial Hospital; Mumbai India
| | - Prathamesh Pai
- Department of Head and Neck Surgery; Tata Memorial Hospital; Mumbai India
| | - Pankaj Chaturvedi
- Department of Head and Neck Surgery; Tata Memorial Hospital; Mumbai India
| | - Anil D'Cruz
- Department of Head and Neck Surgery; Tata Memorial Hospital; Mumbai India
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Johnson DH, Via LE, Kim P, Laddy D, Lau CY, Weinstein EA, Jain S. Nuclear imaging: a powerful novel approach for tuberculosis. Nucl Med Biol 2014; 41:777-84. [PMID: 25195017 DOI: 10.1016/j.nucmedbio.2014.08.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/16/2014] [Accepted: 08/03/2014] [Indexed: 02/06/2023]
Abstract
Nearly 20 years after the World Health Organization declared tuberculosis (TB) a global public health emergency, TB still remains a major global threat with 8.6 million new cases and 1.3 million deaths annually. Mycobacterium tuberculosis adapts to a quiescent physiological state, and is notable for complex interaction with the host, producing poorly-understood disease states ranging from latent infection to fully active disease. Of the approximately 2.5 billion people latently infected with M. tuberculosis, many will develop reactivation disease (relapse), years after the initial infection. While progress has been made on some fronts, the alarming spread of multidrug-resistant, extensively drug-resistant, and more recently totally-drug resistant strains is of grave concern. New tools are urgently needed for rapidly diagnosing TB, monitoring TB treatments and to allow unique insights into disease pathogenesis. Nuclear bioimaging is a powerful, noninvasive tool that can rapidly provide three-dimensional views of disease processes deep within the body and conduct noninvasive longitudinal assessments of the same patient. In this review, we discuss the application of nuclear bioimaging to TB, including the current state of the field, considerations for radioprobe development, study of TB drug pharmacokinetics in infected tissues, and areas of research and clinical needs that could be addressed by nuclear bioimaging. These technologies are an emerging field of research, overcome several fundamental limitations of current tools, and will have a broad impact on both basic research and patient care. Beyond diagnosis and monitoring disease, these technologies will also allow unique insights into understanding disease pathogenesis; and expedite bench-to-bedside translation of new therapeutics. Finally, since molecular imaging is readily available for humans, validated tracers will become valuable tools for clinical applications.
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Affiliation(s)
| | | | | | | | | | | | - Sanjay Jain
- Center for Infection and Inflammation Imaging Research, Center for Tuberculosis Research and Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
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MacManus MP. Use of PET/CT for patient selection and radiation therapy target volume definition in patients with non-small-cell lung cancer. Lung Cancer Manag 2013. [DOI: 10.2217/lmt.13.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SUMMARY PET scanning is having an increasing impact on the treatment of non-small-cell lung cancer with radiation therapy (RT) and chemoRT. It has a powerful impact on staging, often revealing evidence of more advanced, frequently incurable, disease in patients who would otherwise be considered suitable for treatment with potentially curative definitive RT. Approximately a third of curative RT candidates are found to be unsuitable for this often highly toxic form of treatment after PET, thereby ensuring that this intensive treatment is only given to those patients who might benefit from it. If a patient remains suitable for treatment with RT after PET staging, PET can play a further critical role in the targeting of the RT. Without the use of PET in this way, a quarter of patients or more would experience geographic misses, in which some tumor regions would be either underdosed or excluded entirely from treatment, thereby compromising the chances of a successful outcome. There is emerging evidence that the overall results of treatment with RT can be improved by the appropriate use of PET in non-small-cell lung cancer.
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Affiliation(s)
- Michael P MacManus
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, St Andrew‘s Place, East Melbourne, Victoria 3002, Australia
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Ito K, Morooka M, Minamimoto R, Miyata Y, Okasaki M, Kubota K. Imaging spectrum and pitfalls of 18F-fluorodeoxyglucose positron emission tomography/computed tomography in patients with tuberculosis. Jpn J Radiol 2013; 31:511-20. [DOI: 10.1007/s11604-013-0218-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 05/13/2013] [Indexed: 11/30/2022]
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Yoo SY, Kim Y, Cho HH, Choi MJ, Shim SS, Lee JK, Baek SY. Dual-energy CT in the assessment of mediastinal lymph nodes: comparative study of virtual non-contrast and true non-contrast images. Korean J Radiol 2013; 14:532-9. [PMID: 23690725 PMCID: PMC3655312 DOI: 10.3348/kjr.2013.14.3.532] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 10/17/2012] [Indexed: 11/25/2022] Open
Abstract
Objective To evaluate the reliability of virtual non-contrast (VNC) images reconstructed from contrast-enhanced, dual-energy scans compared with true non-contrast (TNC) images in the assessment of high CT attenuation or calcification of mediastinal lymph nodes. Materials and Methods A total of 112 mediastinal nodes from 45 patients who underwent non-contrast and dual-energy contrast-enhanced scans were analyzed. Node attenuation in TNC and VNC images was compared both objectively, using computed tomography (CT) attenuation, and subjectively, via visual scoring (0, attenuation ≤ the aorta; 1, > the aorta; 2, calcification). The relationship among attenuation difference between TNC and VNC images, CT attenuation in TNC images, and net contrast enhancement (NCE) was analyzed. Results CT attenuation in TNC and VNC images showed moderate agreement (intraclass correlation coefficient, 0.612). The mean absolute difference was 7.8 ± 7.6 Hounsfield unit (HU) (range, 0-36 HU), and the absolute difference was equal to or less than 10 HU in 65.2% of cases (73/112). Visual scores in TNC and VNC images showed fair agreement (κ value, 0.335). Five of 16 nodes (31.3%) which showed score 1 (n = 15) or 2 (n = 1) in TNC images demonstrated score 1 in VNC images. The TNC-VNC attenuation difference showed a moderate positive correlation with CT attenuation in TNC images (partial correlation coefficient [PCC] adjusted by NCE: 0.455) and a weak negative correlation with NCE (PCC adjusted by CT attenuation in TNC: -0.245). Conclusion VNC images may be useful in the evaluation of mediastinal lymph nodes by providing additional information of high CT attenuation of nodes, although it is underestimated compared with TNC images.
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Affiliation(s)
- Seon Young Yoo
- Department of Radiology, School of Medicine, Ewha Womans University, Seoul 158-710, Korea
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Lee P, Kupelian P, Czernin J, Ghosh P. Current concepts in F18 FDG PET/CT-based radiation therapy planning for lung cancer. Front Oncol 2012; 2:71. [PMID: 22798989 PMCID: PMC3393879 DOI: 10.3389/fonc.2012.00071] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Accepted: 06/25/2012] [Indexed: 11/13/2022] Open
Abstract
Radiation therapy is an important component of cancer therapy for early stage as well as locally advanced lung cancer. The use of F18 FDG PET/CT has come to the forefront of lung cancer staging and overall treatment decision-making. FDG PET/CT parameters such as standard uptake value and metabolic tumor volume provide important prognostic and predictive information in lung cancer. Importantly, FDG PET/CT for radiation planning has added biological information in defining the gross tumor volume as well as involved nodal disease. For example, accurate target delineation between tumor and atelectasis is facilitated by utilizing PET and CT imaging. Furthermore, there has been meaningful progress in incorporating metabolic information from FDG PET/CT imaging in radiation treatment planning strategies such as radiation dose escalation based on standard uptake value thresholds as well as using respiratory-gated PET and CT planning for improved target delineation of moving targets. In addition, PET/CT-based follow-up after radiation therapy has provided the possibility of early detection of local as well as distant recurrences after treatment. More research is needed to incorporate other biomarkers such as proliferative and hypoxia biomarkers in PET as well as integrating metabolic information in adaptive, patient-centered, tailored radiation therapy.
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Affiliation(s)
- Percy Lee
- Department of Radiation Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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