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Apostolos H. Karantanas - One of the best experts on this subject based on the ideXlab platform.
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Piriformis muscle syndrome: A Cross-Sectional Imaging study in 116 patients and evaluation of therapeutic outcome
European Radiology, 2018Co-Authors: Evangelia E. Vassalou, Pavlos Katonis, Apostolos H. KarantanasAbstract:Objectives To increase the clinical awareness of piriformis muscle syndrome (PMs) by reporting Cross-Sectional Imaging findings, the clinical impact of Imaging studies and treatment outcome. Methods Within a 10-year-period, 116 patients referred for radiological evaluation of clinically suspected PMs, with excluded lumbar pathology related to symptomatology, were prospectively studied with MRI and/or computed tomography (CT). Piriformis muscle (PM), sciatic nerve (SN), piriformis region and sacroiliac joints were evaluated. PMs was categorised into primary/secondary, according to a reported classification system. Treatment decisions were recorded. Outcome was categorised using a 3-point-scale. Results Seventy-four patients (63.8%) exhibited pathologies related to PMs. Primary causes were detected in 12 and secondary in 62 patients. PM enlargement was found in 45.9% of patients, abnormal PM signal intensity/density in 40.5% and sciatic neuritis in 25.7%. Space-occupying lesions represented the most common related pathology. Treatment proved effective in 5/8 patients with primary and 34/51 patients with secondary PMs. In 34 patients, Imaging revealed an unknown underlying medical condition and altered treatment planning. Conclusions Secondary PMs aetiologies appear to prevail. In suspected PMs, PM enlargement represented the most common Imaging finding and space-occupying lesions the leading cause. Imaging had the potential to alter treatment decisions. Key Points • In clinically suspected PMs Cross-Sectional Imaging may reveal variable pathology. • Secondary PMs aetiologies appeared to be more common than primary. • PM enlargement represented the most common Imaging finding in clinically suspected PMs. • Space-occupying lesions in the piriformis region represented the leading cause of PMs. • In clinically suspected PMs Cross-Sectional Imaging may alter treatment planning.
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piriformis muscle syndrome a cross sectional Imaging study in 116 patients and evaluation of therapeutic outcome
European Radiology, 2018Co-Authors: Evangelia E. Vassalou, Pavlos Katonis, Apostolos H. KarantanasAbstract:Objectives To increase the clinical awareness of piriformis muscle syndrome (PMs) by reporting Cross-Sectional Imaging findings, the clinical impact of Imaging studies and treatment outcome.
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Primary and secondary piriformis syndrome: a cross sectional Imaging study
2011Co-Authors: Evangelia E. Vassalou, Anastasia Fotiadou, Eleni Eracleous, Constantinos Natsiopoulos, Apostolos H. KarantanasAbstract:Poster: "ECR 2011 / C-0772 / Primary and secondary piriformis syndrome: a cross sectional Imaging study" by: "E. Vassalou1, A. Fotiadou2, E. Eracleous3, C. Natsiopoulos3, A. H. Karantanas1; 1Iraklion/GR, 2Cambridgeshire/UK, 3Nicosia/CY"
Evangelia E. Vassalou - One of the best experts on this subject based on the ideXlab platform.
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Piriformis muscle syndrome: A Cross-Sectional Imaging study in 116 patients and evaluation of therapeutic outcome
European Radiology, 2018Co-Authors: Evangelia E. Vassalou, Pavlos Katonis, Apostolos H. KarantanasAbstract:Objectives To increase the clinical awareness of piriformis muscle syndrome (PMs) by reporting Cross-Sectional Imaging findings, the clinical impact of Imaging studies and treatment outcome. Methods Within a 10-year-period, 116 patients referred for radiological evaluation of clinically suspected PMs, with excluded lumbar pathology related to symptomatology, were prospectively studied with MRI and/or computed tomography (CT). Piriformis muscle (PM), sciatic nerve (SN), piriformis region and sacroiliac joints were evaluated. PMs was categorised into primary/secondary, according to a reported classification system. Treatment decisions were recorded. Outcome was categorised using a 3-point-scale. Results Seventy-four patients (63.8%) exhibited pathologies related to PMs. Primary causes were detected in 12 and secondary in 62 patients. PM enlargement was found in 45.9% of patients, abnormal PM signal intensity/density in 40.5% and sciatic neuritis in 25.7%. Space-occupying lesions represented the most common related pathology. Treatment proved effective in 5/8 patients with primary and 34/51 patients with secondary PMs. In 34 patients, Imaging revealed an unknown underlying medical condition and altered treatment planning. Conclusions Secondary PMs aetiologies appear to prevail. In suspected PMs, PM enlargement represented the most common Imaging finding and space-occupying lesions the leading cause. Imaging had the potential to alter treatment decisions. Key Points • In clinically suspected PMs Cross-Sectional Imaging may reveal variable pathology. • Secondary PMs aetiologies appeared to be more common than primary. • PM enlargement represented the most common Imaging finding in clinically suspected PMs. • Space-occupying lesions in the piriformis region represented the leading cause of PMs. • In clinically suspected PMs Cross-Sectional Imaging may alter treatment planning.
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piriformis muscle syndrome a cross sectional Imaging study in 116 patients and evaluation of therapeutic outcome
European Radiology, 2018Co-Authors: Evangelia E. Vassalou, Pavlos Katonis, Apostolos H. KarantanasAbstract:Objectives To increase the clinical awareness of piriformis muscle syndrome (PMs) by reporting Cross-Sectional Imaging findings, the clinical impact of Imaging studies and treatment outcome.
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Primary and secondary piriformis syndrome: a cross sectional Imaging study
2011Co-Authors: Evangelia E. Vassalou, Anastasia Fotiadou, Eleni Eracleous, Constantinos Natsiopoulos, Apostolos H. KarantanasAbstract:Poster: "ECR 2011 / C-0772 / Primary and secondary piriformis syndrome: a cross sectional Imaging study" by: "E. Vassalou1, A. Fotiadou2, E. Eracleous3, C. Natsiopoulos3, A. H. Karantanas1; 1Iraklion/GR, 2Cambridgeshire/UK, 3Nicosia/CY"
Dharshan Vummidi - One of the best experts on this subject based on the ideXlab platform.
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Cross-Sectional Imaging Review of Tuberous Sclerosis
Radiologic clinics of North America, 2016Co-Authors: Anant Krishnan, Ravi K. Kaza, Dharshan VummidiAbstract:Tuberous sclerosis complex (TSC) is a multisystem, genetic disorder characterized by development of hamartomas in the brain, abdomen, and thorax. It results from a mutation in one of 2 tumor suppressor genes that activates the mammalian target of rapamycin pathway. This article discusses the origins of the disorder, the recently updated criteria for the diagnosis of TSC, and the Cross-Sectional Imaging findings and recommendations for surveillance. Familiarity with the diverse radiological features facilitates diagnosis and helps in treatment planning and monitoring response to treatment of this multisystem disorder.
Riadh Sadik - One of the best experts on this subject based on the ideXlab platform.
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EUS is accurate in characterizing pancreatic cystic lesions; a prospective comparison with Cross-Sectional Imaging in resected cases
Surgical Endoscopy, 2020Co-Authors: Sahar Wesali, Mehmet A. Demir, Caroline S. Verbeke, Mats Andersson, Svein Olav Bratlie, Riadh SadikAbstract:Background Imaging modalities for characterizing pancreatic cystic lesions (PCLs) is a known uncertainty. The aim of this prospective study was to compare the diagnostic performance of endoscopic ultrasound morphology, cytology and cyst fluid carcinoembryonic antigen (EUS-FNA-CEA) with Cross-Sectional Imaging in resected PCLs. Methods The Cross-Sectional Imaging and EUS-FNA-CEA results were collected in an academic tertiary referral centre using histology of the surgical specimen as the diagnostic standard. Results Of 289 patients undergoing evaluation for PCL with Cross-Sectional Imaging and EUS-FNA between February 2007 and March 2017, 58 underwent surgical resection providing a final diagnosis of the PCLs: 45 mucinous, 5 serous, 1 pseudocyst, 2 endocrine, 2 solid pseudopapillary neoplasms and 3 other. EUS-FNA-CEA was more accurate than Cross-Sectional Imaging in diagnosing mucinous PCLs (95% vs. 83%, p = 0.04). Ninety-two percent of the PCLs with high-grade dysplasia or adenocarcinoma were smaller than 3 cm in diameter. The sensitivity of EUS-FNA-CEA and Cross-Sectional Imaging for detecting PCLs with high-grade dysplasia or adenocarcinoma were 33% and 5% ( p = 0.03), respectively. However, there was no difference in accuracy between the modalities (62% vs. 66%, p = 0.79). The sensitivity for detecting pancreatic adenocarcinomas only was 64% for EUS-FNA-CEA and 9% for Cross-Sectional Imaging ( p = 0.03). Overall, EUS-FNA-CEA provided a correct diagnosis in more patients with PCLs than Cross-Sectional Imaging (72% vs. 50%, p = 0.01). Conclusions EUS-FNA-CEA is accurate and should be considered a complementary test in the diagnosis of PCLs. However, the detection of PCLs with high-grade dysplasia or adenocarcinoma needs to be improved. Cyst size does not seem to be a reliable predictor of high-grade dysplasia or adenocarcinoma.
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EUS is accurate in characterizing pancreatic cystic lesions; a prospective comparison with Cross-Sectional Imaging in resected cases.
Surgical endoscopy, 2020Co-Authors: Sahar Wesali, Mehmet A. Demir, Caroline S. Verbeke, Mats Andersson, Svein Olav Bratlie, Riadh SadikAbstract:Imaging modalities for characterizing pancreatic cystic lesions (PCLs) is a known uncertainty. The aim of this prospective study was to compare the diagnostic performance of endoscopic ultrasound morphology, cytology and cyst fluid carcinoembryonic antigen (EUS-FNA-CEA) with Cross-Sectional Imaging in resected PCLs. The Cross-Sectional Imaging and EUS-FNA-CEA results were collected in an academic tertiary referral centre using histology of the surgical specimen as the diagnostic standard. Of 289 patients undergoing evaluation for PCL with Cross-Sectional Imaging and EUS-FNA between February 2007 and March 2017, 58 underwent surgical resection providing a final diagnosis of the PCLs: 45 mucinous, 5 serous, 1 pseudocyst, 2 endocrine, 2 solid pseudopapillary neoplasms and 3 other. EUS-FNA-CEA was more accurate than Cross-Sectional Imaging in diagnosing mucinous PCLs (95% vs. 83%, p = 0.04). Ninety-two percent of the PCLs with high-grade dysplasia or adenocarcinoma were smaller than 3 cm in diameter. The sensitivity of EUS-FNA-CEA and Cross-Sectional Imaging for detecting PCLs with high-grade dysplasia or adenocarcinoma were 33% and 5% (p = 0.03), respectively. However, there was no difference in accuracy between the modalities (62% vs. 66%, p = 0.79). The sensitivity for detecting pancreatic adenocarcinomas only was 64% for EUS-FNA-CEA and 9% for Cross-Sectional Imaging (p = 0.03). Overall, EUS-FNA-CEA provided a correct diagnosis in more patients with PCLs than Cross-Sectional Imaging (72% vs. 50%, p = 0.01). EUS-FNA-CEA is accurate and should be considered a complementary test in the diagnosis of PCLs. However, the detection of PCLs with high-grade dysplasia or adenocarcinoma needs to be improved. Cyst size does not seem to be a reliable predictor of high-grade dysplasia or adenocarcinoma.
Max Wintermark - One of the best experts on this subject based on the ideXlab platform.
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Causes of Misinterpretation of Cross-Sectional Imaging Studies for Dissection of the Craniocervical Arteries
AJR. American journal of roentgenology, 2011Co-Authors: James M. Provenzale, Basar Sarikaya, Lotfi Hacein-bey, Max WintermarkAbstract:OBJECTIVE. This review presents some of the more common causes of false-positive and false-negative interpretations of Cross-Sectional Imaging studies showing, or designed to show, dissection of the carotid or vertebral arteries.CONCLUSION. Dissection of the craniocervical arteries is a diagnosis that can be very difficult on Cross-Sectional Imaging studies such as CT angiography, MRI, and MR angiography.
