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Quantitative assessment of intraneural vascular alterations in peripheral nerve trauma using high-resolution neurosonography: technical note. Sci Rep 2021; 11:13320. [PMID: 34172789 PMCID: PMC8233368 DOI: 10.1038/s41598-021-92643-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/11/2021] [Indexed: 11/15/2022] Open
Abstract
High-resolution neurosonography (HRNS) has become a major imaging modality in assessment of peripheral nerve trauma in the recent years. However, the vascular changes of traumatic lesions have not been quantitatively assessed in HRNS. Here, we describe the vascular-ratio, a novel HRNS-based quantitative parameter for the assessment of intraneural vascular alterations in patients with nerve lesions. N = 9 patients suffering from peripheral nerve trauma were examined clinically, electrophysiologically and with HRNS (SonoSite Exporte, Fuji). Image analyses using Fiji included determination of the established fascicular ratio (FR), the cross-section ratio (CSR), and as an extension, the calculation of a vascular ratio (VR) of the healthy versus damaged nerve and a muscle perfusion ratio (MPR) in comparison to a healthy control group. The mean VR in the healthy part of the affected nerve (14.14%) differed significantly (p < 0.0001) from the damaged part (VR of 43.26%). This coincides with significant differences in the FR and CSR calculated for the damaged part versus the healthy part and the controls. In comparison, there was no difference between VRs determined for the healthy part of the affected nerve and the healthy controls (14.14% / 17.72%). However, the MPR of denervated muscles was significantly decreased compared to the non-affected contralateral controls. VR and MPR serve as additional tools in assessing peripheral nerve trauma. Image analysis and calculation are feasible. Combined with the more morphologic FR and CSR, the VR and MPR provide a more detailed insight into alterations accompanying nerve trauma.
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Daniels SP, Mankowski Gettle L, Blankenbaker DG, Lee KS, Ross AB. Contrast-enhanced ultrasound-guided musculoskeletal biopsies: our experience and technique. Skeletal Radiol 2021; 50:673-681. [PMID: 32935196 DOI: 10.1007/s00256-020-03604-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/09/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To present our experience with contrast-enhanced ultrasound (CEUS)-guided musculoskeletal soft tissue biopsies in a busy interventional clinic. MATERIALS AND METHODS After IRB approval was obtained and informed consent was waived, we retrospectively reviewed all CEUS-guided musculoskeletal biopsies performed from December 1, 2018 to March 2, 2020. Relevant pre-procedure imaging was reviewed. Number of samples, suspected necrosis on pre-procedure imaging, specimen adequacy for pathologic analysis, correlation with pathologic diagnosis of surgical resection specimens, and procedural complications were recorded. RESULTS Thirty-six CEUS-guided musculoskeletal biopsies were performed in 32 patients (mean age 57, range 26-88; 22 males, 10 females). All procedures were performed using 16-gauge biopsy needles, and all procedures provided adequate samples for pathologic analysis as per the final pathology report. Between two and seven core specimens were obtained (mean 3.7). In 30/36 cases (83%), a contrast-enhanced MRI was obtained prior to biopsy, and 10/30 (33%) of these cases showed imaging features suspicious for necrosis. In 15/36 cases, surgical resection was performed, and the core biopsy and surgical resection specimens were concordant in 14/15 cases (93%). One patient noted transient leg discomfort at the time of microbubble bursting. Otherwise, no adverse reactions or procedural complications were observed. CONCLUSION CEUS is an accurate way to safely target representative areas of soft tissue lesions for biopsy and can be implemented in a busy interventional clinic. Our early experience has shown this to be a promising technique, especially in targeting representative areas of heterogeneous lesions and lesions with areas of suspected necrosis on prior imaging.
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Affiliation(s)
- Steven P Daniels
- Department of Radiology, NYU Langone Heath, 660 First Avenue, New York, NY, 10016, USA.
| | - Lori Mankowski Gettle
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 E. Highland Avenue, Madison, WI, 53792, USA
| | - Donna G Blankenbaker
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 E. Highland Avenue, Madison, WI, 53792, USA
| | - Kenneth S Lee
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 E. Highland Avenue, Madison, WI, 53792, USA
| | - Andrew B Ross
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 E. Highland Avenue, Madison, WI, 53792, USA
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De Marchi A, Pozza S, Charrier L, Cannone F, Cavallo F, Linari A, Piana R, Geniò I, Balocco P, Massè A. Small Subcutaneous Soft Tissue Tumors (<5 cm) Can Be Sarcomas and Contrast-Enhanced Ultrasound (CEUS) Is Useful to Identify Potentially Malignant Masses. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E8868. [PMID: 33260631 PMCID: PMC7730454 DOI: 10.3390/ijerph17238868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/17/2020] [Accepted: 11/25/2020] [Indexed: 11/17/2022]
Abstract
Subcutaneous masses smaller than 5 cm can be malignant, in contrast with the international guidelines. Ultrasound (US) and magnetic resonance imaging (MRI) are useful to distinguish a potentially malignant mass from the numerous benign soft tissue (ST) lesions. Contrast-enhanced ultrasound (CEUS) was applied in ST tumors, without distinguishing the subcutaneous from the deep lesions. We evaluated CEUS and MRI accuracy in comparison to histology in differentiating malignant from nonmalignant superficial ST masses, 50% smaller than 5 cm. Sensitivity, specificity, and positive and negative predictive values (PPV, NPV) with their 95% confidence intervals (CI) were calculated. Of malignant cases, 44.4% measured ≤5 cm. At univariate analysis, no statistically significant differences emerged between benign and malignant tumors in relation with clinical characteristics, except for relationship with the deep fascia (p = 0.048). MRI accuracy: sensitivity 52.8% (CI 37.0, 68.0), specificity 74.1% (CI 55.3, 86.8), PPV 73.1% (CI 53.9, 86.3), and NPV 54.1% (CI 38.4, 69.0). CEUS accuracy: sensitivity 75% (CI 58.9, 86.3), specificity 37% (CI 21.5, 55.8), PPV 61.4% (CI 46.6, 74.3), and NPV 52.6% (CI 31.7, 72.7). CEUS showed a sensitivity higher than MRI, whereas PPV and NPV were comparable. Also, masses measuring less than 5 cm can be malignant and referral criteria for centralization could be revised.
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Affiliation(s)
- Armanda De Marchi
- Department of Imaging, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, CTO Hospital, Via Zuretti 29, 10126 Torino, Italy; (A.D.M.); (S.P.); (P.B.)
| | - Simona Pozza
- Department of Imaging, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, CTO Hospital, Via Zuretti 29, 10126 Torino, Italy; (A.D.M.); (S.P.); (P.B.)
| | - Lorena Charrier
- Department of Public Health and Pediatrics, University of Turin, Via Santena 5-bis, 10126 Torino, Italy;
| | - Filadelfo Cannone
- Radiology Department, Azienda Sanitaria Provinciale di Siracusa, E. Muscatello Hospital, Contrada Granatello, 96011 Augusta, Italy;
| | - Franco Cavallo
- Department of Public Health and Pediatrics, University of Turin, Via Santena 5-bis, 10126 Torino, Italy;
| | - Alessandra Linari
- Department of Pathology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, CTO Hospital, Via Zuretti 29, 10126 Torino, Italy;
| | - Raimondo Piana
- Department of Orthopaedic, Traumatology and Rehabilitation, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, CTO Hospital, Via Zuretti 29, 10126 Torino, Italy; (R.P.); (A.M.)
| | - Irene Geniò
- Department of Imaging, Azienda Ospedaliero Universitaria G. Martino, Via Consolare Valeria 1, 98100 Messina, Italy;
| | - Paolo Balocco
- Department of Imaging, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, CTO Hospital, Via Zuretti 29, 10126 Torino, Italy; (A.D.M.); (S.P.); (P.B.)
| | - Alessandro Massè
- Department of Orthopaedic, Traumatology and Rehabilitation, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, CTO Hospital, Via Zuretti 29, 10126 Torino, Italy; (R.P.); (A.M.)
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Enshaei A, Mohammadi A, Moosavi Toomatari SB, Yekta Z, Moosavi Toomatari SE, Ghasemi-Rad M, Shamspour SZ, Sarabi ZK, Sepehrvand N. Diagnostic value of a power Doppler ultrasound-based malignancy index for differentiating malignant and benign solid breast lesions. Indian J Cancer 2020; 57:44-48. [PMID: 31929234 DOI: 10.4103/ijc.ijc_424_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Power Doppler ultrasound (PDUS) can provide useful information regarding the vascularity of breast lesions. The aim of this study was to investigate the diagnostic performance of a new PDUS-driven malignancy index in differentiating between malignant and benign causes of solid breast lesions. Materials and Methods Patients with solid breast lesions were enrolled consecutively and evaluated first by PDUS and subsequently by histopathologic assessment after undergoing surgical biopsy. A custom-made software was used to extract data from images for calculating malignancy index formula. Results A total of 87 patients with solid breast lesions were enrolled. Histopathologic evaluation identified 49 patients as benign and 38 patients as malignant. Malignancy index was significantly higher in the malignant group as compared to benign tumors (6.31 vs 0.30,P < 0.001). Area under the receiver operating characteristics (ROC) curve (AUC) was 0.98 (95% confidence interval (CI) 0.95-1.00). According to the ROC curve analysis, the cut-off point of 1.23 for malignancy index had a sensitivity and specificity of 94.7% (95% CI 82.2-99.3) and 94.0% (95% CI 83.1-98.7), respectively. Conclusion Comparing with the histopathologic evaluation as the gold standard for diagnosing breast lesions, PDUS-driven malignancy index was shown to have a high discriminative performance in identifying malignant lesions with high sensitivity, specificity, and diagnostic accuracy. The noninvasive nature of PDUS is an important advantage that could prevent unnecessary biopsies.
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Affiliation(s)
- Ali Enshaei
- Department of Surgery, Urmia University of Medical Sciences, Urmia, Iran
| | - Afshin Mohammadi
- Department of Radiology, Urmia University of Medical Sciences, Urmia, Iran
| | | | - Zahra Yekta
- Department of Community Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | | | | | | | - Zahra Karimi Sarabi
- Department of Anesthesiology, Urmia University of Medical Sciences, Urmia, Iran
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Morii T, Kishino T, Shimamori N, Motohashi M, Ohnishi H, Honya K, Aoyagi T, Tajima T, Ichimura S. Preoperative Ultrasonographic Evaluation for Malignancy of Soft-Tissue Sarcoma: A Retrospective Study. Open Orthop J 2018; 12:75-83. [PMID: 29619120 PMCID: PMC5859456 DOI: 10.2174/1874325001812010075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/14/2018] [Accepted: 02/23/2018] [Indexed: 12/14/2022] Open
Abstract
Background: Ultrasonography is useful for distinguishing between benign and malignant soft-tissue tumors. However, no study has focused on its usefulness in the differential diagnosis between low-grade and high-grade soft-tissue sarcomas. We conducted a retrospective study to determine the usefulness of the parameters of ultrasonograph and to develop a practical scoring system for distinguishing between high-grade and low-grade sarcomas. Methods: Twenty-two cases of low-grade and 43 cases of high-grade malignant soft-tissue sarcoma were enrolled. Ultrasonography parameters including the longest diameter, depth of the tumor, echogenicity, tumor margin, and vascularity defined according to Giovagnorio’s criteria were analyzed as factors to distinguish between the two types of sarcoma. Significant factors were entered into a multivariate model to define the scores for distinction according to the odds ratio. The usefulness of the score was analyzed via receiver operating characteristic analyses. Results: In univariate analysis, tumor margin, echogenicity, and vascularity were significantly different between low- and high-grade sarcomas. In the multivariate regression model, the odds ratio for high-grade vs. low-grade sarcoma was 8.8 for tumor margin, 69 for echogenicity, and 8.3 for vascularity. Scores for the risk factors were defined as follows: 1, ill-defined margin; 2, hypoechoic echogenicity; and 1, type IV in Giovagnorio’s criteria. The sum of each score was confirmed by receiver operating characteristic analysis. The area under the curve was 0.95, with a cut-off score of 3, indicating that the scoring system was useful. Conclusion: The ultrasonography parameters of tumor margin, echogenicity, and vascularity are useful for distinguishing between low- and high-grade sarcomas.
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Affiliation(s)
- Takeshi Morii
- Department of Orthopaedic Surgery, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Tomonori Kishino
- Department of Laboratory Medicine, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Naoko Shimamori
- Department of Laboratory Medicine, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Mitsue Motohashi
- Department of Laboratory Medicine, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Hiroaki Ohnishi
- Department of Laboratory Medicine, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Keita Honya
- Department of Medical Radiological Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo 181-8612, Japan
| | - Takayuki Aoyagi
- Department of Orthopaedic Surgery, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Takashi Tajima
- Department of Orthopaedic Surgery, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Shoichi Ichimura
- Department of Orthopaedic Surgery, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
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Differential diagnosis between benign and malignant soft tissue tumors utilizing ultrasound parameters. J Med Ultrason (2001) 2017. [DOI: 10.1007/s10396-017-0796-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Kupeli A, Kul S, Eyuboglu I, Oguz S, Mungan S. Role of 3D power Doppler ultrasound in the further characterization of suspicious breast masses. Eur J Radiol 2016; 85:1-6. [PMID: 26724642 DOI: 10.1016/j.ejrad.2015.10.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 10/04/2015] [Accepted: 10/27/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE To investigate effectiveness of vascular indices obtained with 3D power Doppler ultrasound in the further characterization of breast masses and prevention of unnecessary biopsies. MATERIALS AND METHODS Between April 2013 and March 2014, 109 patients (age range, 17-85 years; mean age, 47 years) with 117 radiologically or clinically suspicious breast masses were prospectively evaluated with 3DPDUS before biopsy. Mass volume (MV), vascularization index (VI), flow index (FI) and vascularization flow index (VFI) were calculated using Virtual Organ Computer-aided Analysis (VOCAL) software and they were correlated with the final diagnosis. Cutoff values of vascular indices were determinated and diagnostic efficacy was calculated with receiver operating curve (ROC) analysis. RESULTS All vascular indices, age of patients and tumor volume were significantly lower in benign masses compared with malignant ones (p<0.001). AUCs were 0.872, 0.867 and 0.789 for VI, VFI and FI, respectively. The diagnostic efficacy of VI (for cutoff 1.1; 83% sensitivity, 82% specificity and 82% accuracy) and VFI (for cutoff 0.4; 80% sensitivity, 83% specificity and 80% accuracy) were significantly higher than FI (for cutoff 33,9; 73% sensitivity, 69% specificity and 71% accuracy). It was found that with the use of vascular indices of 3DPDUS in the further characterization of suspicious breast masses between 24% to 37% of unnecessary biopsies could have been avoided. CONCLUSION The vascular indices obtained with 3DPDUS seem reliable in the further characterization of suspicious breast masses and might be used to decrease unnecessary biopsies.
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Affiliation(s)
- Ali Kupeli
- Karadeniz Technical University Faculty of Medicine, Farabi Hospital, Department of Radiology, 61080 Trabzon, Turkey.
| | - Sibel Kul
- Karadeniz Technical University Faculty of Medicine, Farabi Hospital, Department of Radiology, 61080 Trabzon, Turkey.
| | - Ilker Eyuboglu
- Karadeniz Technical University Faculty of Medicine, Farabi Hospital, Department of Radiology, 61080 Trabzon, Turkey.
| | - Sukru Oguz
- Karadeniz Technical University Faculty of Medicine, Farabi Hospital, Department of Radiology, 61080 Trabzon, Turkey.
| | - Sevdegul Mungan
- Karadeniz Technical University Faculty of Medicine, Farabi Hospital, Department of Pathology, 61080 Trabzon, Turkey.
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Nagano S, Yahiro Y, Yokouchi M, Setoguchi T, Ishidou Y, Sasaki H, Shimada H, Kawamura I, Komiya S. Doppler ultrasound for diagnosis of soft tissue sarcoma: efficacy of ultrasound-based screening score. Radiol Oncol 2015; 49:135-40. [PMID: 26029024 PMCID: PMC4387989 DOI: 10.1515/raon-2015-0011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/09/2015] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND The utility of ultrasound imaging in the screening of soft-part tumours (SPTs) has been reported. We classified SPTs according to their blood flow pattern on Doppler ultrasound and re-evaluated the efficacy of this imaging modality as a screening method. Additionally, we combined Doppler ultrasound with several values to improve the diagnostic efficacy and to establish a new diagnostic tool. PATIENTS AND METHODS This study included 189 cases of pathologically confirmed SPTs (122 cases of benign disease including SPTs and tumour-like lesions and 67 cases of malignant SPTs). Ultrasound imaging included evaluation of vascularity by colour Doppler. We established a scoring system to more effectively differentiate malignant from benign SPTs (ultrasound-based sarcoma screening [USS] score). RESULTS The mean scores in the benign and malignant groups were 1.47 ± 0.93 and 3.42 ± 1.30, respectively. Patients with malignant masses showed significantly higher USS scores than did those with benign masses (p < 1 × 10(-10)). The area under the curve was 0.88 by receiver operating characteristic (ROC) analysis. Based on the cut-off value (3 points) calculated by ROC curve analysis, the sensitivity and specificity for a diagnosis of malignant SPT was 85.1% and 86.9%, respectively. CONCLUSIONS Assessment of vascularity by Doppler ultrasound alone is insufficient for differentiation between benign and malignant SPTs. Preoperative diagnosis of most SPTs is possible by combining our USS score with characteristic clinical and magnetic resonance imaging findings.
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Affiliation(s)
- Satoshi Nagano
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yuhei Yahiro
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masahiro Yokouchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takao Setoguchi
- The Near-Future Locomotor Organ Medicine Creation Course (Kusunoki Kai), Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yasuhiro Ishidou
- Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiromi Sasaki
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hirofumi Shimada
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Ichiro Kawamura
- Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Setsuro Komiya
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan ; The Near-Future Locomotor Organ Medicine Creation Course (Kusunoki Kai), Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Oebisu N, Hoshi M, Ieguchi M, Takada J, Iwai T, Ohsawa M, Nakamura H. Contrast-enhanced color Doppler ultrasonography increases diagnostic accuracy for soft tissue tumors. Oncol Rep 2014; 32:1654-60. [PMID: 25109621 DOI: 10.3892/or.2014.3378] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 07/17/2014] [Indexed: 11/06/2022] Open
Abstract
Resolution of ultrasonography (US) has undergone marked development. Additionally, a new-generation contrast medium (Sonazoid) used for US is newly available. Contrast-enhanced US has been widely used for evaluating several types of cancer. In the present study, we evaluated the ability of color Doppler US (CDUS) and Sonazoid to differentiate between benign and malignant soft tissue tumors. A total of 180 patients (87 male, 93 female) were enrolled in the present study. The patient ages ranged from 1 to 91 years (mean 58.1±20.0 years). The maximum size, depth, tumor margins, shape, echogenicity and textural pattern were measured on gray-scale images. CDUS was used to evaluate the intratumoral blood flow with and without Sonazoid. Peak systolic flow velocity (Vp), mean flow velocity (Vm), resistivity index (RI) and pulsatility index (PI) of each detected intratumoral artery were automatically calculated with power Doppler US (PDUS). The present study included 118 benign and 62 malignant tumors. Statistical significances were found in size, depth, tumor margin and textural pattern but not in shape or echogenicity on gray-scale images. Before Sonazoid injection, CDUS findings showed 55% sensitivity, 77% specificity and 69% accuracy, whereas contrast-enhanced CDUS showed 87% sensitivity, 68% specificity and 74% accuracy. There were no statistically significant differences between malignant and benign tumors regarding the mean Vp, Vm, RI and PI values determined on PDUS. In conclusion, contrast-enhanced CDUS proved to be a reliable diagnostic tool for detecting malignant potential in soft tissue tumors.
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Affiliation(s)
- Naoto Oebisu
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
| | - Manabu Hoshi
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
| | - Makoto Ieguchi
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
| | - Jun Takada
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
| | - Tadashi Iwai
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
| | - Masahiko Ohsawa
- Department of Diagnostic Pathology, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
| | - Hiroaki Nakamura
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Abeno-Ku, Osaka 545‑8585, Japan
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