The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Olivier Martinet - One of the best experts on this subject based on the ideXlab platform.
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idiopathic segmental infarction of the Greater Omentum a rare cause of acute abdomen
Journal of Gastrointestinal Surgery, 2003Co-Authors: A Paroz, Nermin Halkic, Edgardo Pezzetta, Olivier MartinetAbstract:Idiopathic segmental infarction of the Greater Omentum is a rare cause of acute abdomen. Patients, typically children or obese males in their fifties, present with abdominal pain located in the right upper or lower quadrant, mimicking cholecystitis and appendicitis. CT scanning and ultrasound imaging both may show a well-circumscribed soft tissue mass. Retrospective review of all patients treated for idiopathic segmental infarction of the Greater Omentum occurred from January 1993 to December 2001. Nine patients were treated successfully, six surgically and three medically. Conservative management of segmental infarction of the Greater Omentum can be proposed when correctly diagnosed by ultrasound imaging or CT scanning and the patient's condition is stable. If not, laparoscopic removal of the involved segment of the Greater Omentum is the treatment of choice.
Wenjing Zhao - One of the best experts on this subject based on the ideXlab platform.
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ultrasound elastography for differentiating benign from malignant thickened Greater Omentum
European Radiology, 2016Co-Authors: Yixia Zhang, Yanhong Que, Xuemei Wang, Wenjing Zhao, Chunmei Tao, Bo ChenAbstract:Objectives To investigate whether ultrasound elastography (UE) is an effective non-invasive diagnostic procedure for evaluating benign and malignant thickened Greater Omentum.
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Nodules in the thickened Greater Omentum: a good indicator of lesions?
Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2009Co-Authors: Yanhong Que, Xuemei Wang, Wenjing Zhao, Chunmei Tao, Yan Wang, Yanjun LiuAbstract:Objective. In patients with unclear ascites, a thickened Greater Omentum with variable nodules is usually encountered with high-frequency insonation. The purpose of our study was to assess the importance of nodules in indicating the origin of ascites. Methods. In patients suggested for a biopsy of the Greater Omentum, if nodules were found in the Omentum, sonograms of the nodules were recorded, and during the biopsy, 2 passes were made for each procedure in the nodule and the thickest region without nodules, respectively. A biopsy was considered successful if a specific benign or malignant diagnosis was made. Results. In the 258 patients undergoing sonographically guided biopsies of the Greater Omentum from November 2001 to November 2008, the percentage of definitive diagnoses was 94.57% (244 of 258), and sonography showed nodules in 62 patients. Nodules were found more often by a 10-MHz transducer (62 cases) than by a 3.5-MHz transducer (15 cases). The percentage of definitive diagnoses by sonographically guided biopsies was 100% (62 of 62) at the sites of the nodules and decreased to 87.1% (54 of 62) at the sites without nodules. According to the pathologic results, 48 cases were peritoneal carcinomatosis, and 14 cases were tuberculous peritonitis. The sensitivity and specificity of nodules for indicating malignant ascites were 77.42% and 75.27%, respectively. Conclusions. Nodules in the Greater Omentum were good indicators of lesions and were well shown by a high-frequency transducer. A biopsy at the site of a nodule could substantially increase the positive biopsy result rate. Key words: Greater Omentum; nodule; sonographically guided biopsy.
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ultrasound guided biopsy of Greater Omentum an effective method to trace the origin of unclear ascites
European Journal of Radiology, 2009Co-Authors: Yanhong Que, Xuemei Wang, Yanjun Liu, Wenjing ZhaoAbstract:Abstract Objectives Thickened Greater Omentum is encountered with high frequency in patients with ascites. The purpose of our study was to assess the utility of Greater Omentum biopsy under the guidance of ultrasound (US) in tracing the origin of unclear ascites and differentiating benign and malignant ascites. Materials and methods We retrospectively reviewed our institutional database for all records of Greater Omentum biopsy cases. One hundred and ninety-four patients with unclear ascites and thickened Greater Omentum were included in the study. The sonograms of Greater Omentum were evaluated before undergoing the ultrasound-guided biopsy and a biopsy was considered successful if a specific benign or malignant diagnosis was rendered by the pathologist. Results Successful biopsy was rendered for 182 biopsy procedures (93.8%, 182/194) including tuberculosis ( n = 114), chronic inflammation ( n = 3), metastases ( n = 58), malignant mesothelioma ( n = 6) and pseudomyxoma peritonei ( n = 1). Twelve biopsies were non-diagnostic. According to the results of biopsy and follow-up, the sensitivity and specificity of biopsy in distinguishing malignant ascites from benign ascities were respectively 95.6% (65/68) and 92.9% (117/126). The Greater Omentum of 84 cases of tuberculous peritonitis showed “cerebral fissure” sign and was well seen as an omental cake infiltrated with irregular nodules when involved by carcinomatosis. No “cerebral fissure” sign was observed in peritoneal carcinomatosis. The sensitivity and specificity of this sign in indicating the existence of tuberculous peritonitis were 73.5% (89/121) and 100% (73/73). Moreover, if the specific “cerebral fissure” sign was combined with the biopsy results, the specificity of biopsy in distinguishing malignant ascites from benign ascits increased to 96.8% (122/126). Conclusion Ultrasound-guided biopsy of Greater Omentum is an important and effective method to diagnose the unclear ascites for patients with thickened Omentum if certain techniques could be paid attention to. “Cerebral fissure” sign of Greater Omentum was a specific sign in indicating the tuberculous peritonitis and could increase the specificity of biopsy in distinguishing malignant ascites from benign ascits if combined with the biopsy results.
Yanhong Que - One of the best experts on this subject based on the ideXlab platform.
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ultrasound elastography for differentiating benign from malignant thickened Greater Omentum
European Radiology, 2016Co-Authors: Yixia Zhang, Yanhong Que, Xuemei Wang, Wenjing Zhao, Chunmei Tao, Bo ChenAbstract:Objectives To investigate whether ultrasound elastography (UE) is an effective non-invasive diagnostic procedure for evaluating benign and malignant thickened Greater Omentum.
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Nodules in the thickened Greater Omentum: a good indicator of lesions?
Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2009Co-Authors: Yanhong Que, Xuemei Wang, Wenjing Zhao, Chunmei Tao, Yan Wang, Yanjun LiuAbstract:Objective. In patients with unclear ascites, a thickened Greater Omentum with variable nodules is usually encountered with high-frequency insonation. The purpose of our study was to assess the importance of nodules in indicating the origin of ascites. Methods. In patients suggested for a biopsy of the Greater Omentum, if nodules were found in the Omentum, sonograms of the nodules were recorded, and during the biopsy, 2 passes were made for each procedure in the nodule and the thickest region without nodules, respectively. A biopsy was considered successful if a specific benign or malignant diagnosis was made. Results. In the 258 patients undergoing sonographically guided biopsies of the Greater Omentum from November 2001 to November 2008, the percentage of definitive diagnoses was 94.57% (244 of 258), and sonography showed nodules in 62 patients. Nodules were found more often by a 10-MHz transducer (62 cases) than by a 3.5-MHz transducer (15 cases). The percentage of definitive diagnoses by sonographically guided biopsies was 100% (62 of 62) at the sites of the nodules and decreased to 87.1% (54 of 62) at the sites without nodules. According to the pathologic results, 48 cases were peritoneal carcinomatosis, and 14 cases were tuberculous peritonitis. The sensitivity and specificity of nodules for indicating malignant ascites were 77.42% and 75.27%, respectively. Conclusions. Nodules in the Greater Omentum were good indicators of lesions and were well shown by a high-frequency transducer. A biopsy at the site of a nodule could substantially increase the positive biopsy result rate. Key words: Greater Omentum; nodule; sonographically guided biopsy.
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ultrasound guided biopsy of Greater Omentum an effective method to trace the origin of unclear ascites
European Journal of Radiology, 2009Co-Authors: Yanhong Que, Xuemei Wang, Yanjun Liu, Wenjing ZhaoAbstract:Abstract Objectives Thickened Greater Omentum is encountered with high frequency in patients with ascites. The purpose of our study was to assess the utility of Greater Omentum biopsy under the guidance of ultrasound (US) in tracing the origin of unclear ascites and differentiating benign and malignant ascites. Materials and methods We retrospectively reviewed our institutional database for all records of Greater Omentum biopsy cases. One hundred and ninety-four patients with unclear ascites and thickened Greater Omentum were included in the study. The sonograms of Greater Omentum were evaluated before undergoing the ultrasound-guided biopsy and a biopsy was considered successful if a specific benign or malignant diagnosis was rendered by the pathologist. Results Successful biopsy was rendered for 182 biopsy procedures (93.8%, 182/194) including tuberculosis ( n = 114), chronic inflammation ( n = 3), metastases ( n = 58), malignant mesothelioma ( n = 6) and pseudomyxoma peritonei ( n = 1). Twelve biopsies were non-diagnostic. According to the results of biopsy and follow-up, the sensitivity and specificity of biopsy in distinguishing malignant ascites from benign ascities were respectively 95.6% (65/68) and 92.9% (117/126). The Greater Omentum of 84 cases of tuberculous peritonitis showed “cerebral fissure” sign and was well seen as an omental cake infiltrated with irregular nodules when involved by carcinomatosis. No “cerebral fissure” sign was observed in peritoneal carcinomatosis. The sensitivity and specificity of this sign in indicating the existence of tuberculous peritonitis were 73.5% (89/121) and 100% (73/73). Moreover, if the specific “cerebral fissure” sign was combined with the biopsy results, the specificity of biopsy in distinguishing malignant ascites from benign ascits increased to 96.8% (122/126). Conclusion Ultrasound-guided biopsy of Greater Omentum is an important and effective method to diagnose the unclear ascites for patients with thickened Omentum if certain techniques could be paid attention to. “Cerebral fissure” sign of Greater Omentum was a specific sign in indicating the tuberculous peritonitis and could increase the specificity of biopsy in distinguishing malignant ascites from benign ascits if combined with the biopsy results.
Xuemei Wang - One of the best experts on this subject based on the ideXlab platform.
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ultrasound elastography for differentiating benign from malignant thickened Greater Omentum
European Radiology, 2016Co-Authors: Yixia Zhang, Yanhong Que, Xuemei Wang, Wenjing Zhao, Chunmei Tao, Bo ChenAbstract:Objectives To investigate whether ultrasound elastography (UE) is an effective non-invasive diagnostic procedure for evaluating benign and malignant thickened Greater Omentum.
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Nodules in the thickened Greater Omentum: a good indicator of lesions?
Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2009Co-Authors: Yanhong Que, Xuemei Wang, Wenjing Zhao, Chunmei Tao, Yan Wang, Yanjun LiuAbstract:Objective. In patients with unclear ascites, a thickened Greater Omentum with variable nodules is usually encountered with high-frequency insonation. The purpose of our study was to assess the importance of nodules in indicating the origin of ascites. Methods. In patients suggested for a biopsy of the Greater Omentum, if nodules were found in the Omentum, sonograms of the nodules were recorded, and during the biopsy, 2 passes were made for each procedure in the nodule and the thickest region without nodules, respectively. A biopsy was considered successful if a specific benign or malignant diagnosis was made. Results. In the 258 patients undergoing sonographically guided biopsies of the Greater Omentum from November 2001 to November 2008, the percentage of definitive diagnoses was 94.57% (244 of 258), and sonography showed nodules in 62 patients. Nodules were found more often by a 10-MHz transducer (62 cases) than by a 3.5-MHz transducer (15 cases). The percentage of definitive diagnoses by sonographically guided biopsies was 100% (62 of 62) at the sites of the nodules and decreased to 87.1% (54 of 62) at the sites without nodules. According to the pathologic results, 48 cases were peritoneal carcinomatosis, and 14 cases were tuberculous peritonitis. The sensitivity and specificity of nodules for indicating malignant ascites were 77.42% and 75.27%, respectively. Conclusions. Nodules in the Greater Omentum were good indicators of lesions and were well shown by a high-frequency transducer. A biopsy at the site of a nodule could substantially increase the positive biopsy result rate. Key words: Greater Omentum; nodule; sonographically guided biopsy.
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ultrasound guided biopsy of Greater Omentum an effective method to trace the origin of unclear ascites
European Journal of Radiology, 2009Co-Authors: Yanhong Que, Xuemei Wang, Yanjun Liu, Wenjing ZhaoAbstract:Abstract Objectives Thickened Greater Omentum is encountered with high frequency in patients with ascites. The purpose of our study was to assess the utility of Greater Omentum biopsy under the guidance of ultrasound (US) in tracing the origin of unclear ascites and differentiating benign and malignant ascites. Materials and methods We retrospectively reviewed our institutional database for all records of Greater Omentum biopsy cases. One hundred and ninety-four patients with unclear ascites and thickened Greater Omentum were included in the study. The sonograms of Greater Omentum were evaluated before undergoing the ultrasound-guided biopsy and a biopsy was considered successful if a specific benign or malignant diagnosis was rendered by the pathologist. Results Successful biopsy was rendered for 182 biopsy procedures (93.8%, 182/194) including tuberculosis ( n = 114), chronic inflammation ( n = 3), metastases ( n = 58), malignant mesothelioma ( n = 6) and pseudomyxoma peritonei ( n = 1). Twelve biopsies were non-diagnostic. According to the results of biopsy and follow-up, the sensitivity and specificity of biopsy in distinguishing malignant ascites from benign ascities were respectively 95.6% (65/68) and 92.9% (117/126). The Greater Omentum of 84 cases of tuberculous peritonitis showed “cerebral fissure” sign and was well seen as an omental cake infiltrated with irregular nodules when involved by carcinomatosis. No “cerebral fissure” sign was observed in peritoneal carcinomatosis. The sensitivity and specificity of this sign in indicating the existence of tuberculous peritonitis were 73.5% (89/121) and 100% (73/73). Moreover, if the specific “cerebral fissure” sign was combined with the biopsy results, the specificity of biopsy in distinguishing malignant ascites from benign ascits increased to 96.8% (122/126). Conclusion Ultrasound-guided biopsy of Greater Omentum is an important and effective method to diagnose the unclear ascites for patients with thickened Omentum if certain techniques could be paid attention to. “Cerebral fissure” sign of Greater Omentum was a specific sign in indicating the tuberculous peritonitis and could increase the specificity of biopsy in distinguishing malignant ascites from benign ascits if combined with the biopsy results.
Lai Zheng-hong - One of the best experts on this subject based on the ideXlab platform.
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The clinical application of pedicle Greater Omentum in the treatment of thoracic Surgery
Journal of Gannan Medical University, 2006Co-Authors: Lai Zheng-hongAbstract:Objective: To evaluate clinical application and method of pedicle Greater Omentum in some thoracic surgery.Methods:31 patients underwent thoracic surgery by using packing suture,blind tamponade and compression or overlying of pedicle Greater(Omentum) from March 2002 to June 2005.Results:The operations were successfully performed with good exposure.There was no(operative) death,postoperative complication and relapse,the postoperative convalescence was much shortened.Conclusion:Pedicle(Greater)(Omentum) used in some thoracic surgery can get a good efficacy in treating defect of softtissues and in preventing postoperative complications.
