caa a22 4500 605494258 CHVBK 20210128100525.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00261-014-0250-6 doi (NATIONALLICENCE)springer-10.1007/s00261-014-0250-6 Primary cystic peritoneal masses and mimickers: spectrum of diseases with pathologic correlation [Elektronische Daten] [María Arraiza, Ur Metser, Rajkumar Vajpeyi, Korosh Khalili, Anthony Hanbidge, Erin Kennedy, Sangeet Ghai] Cystic lesions within the peritoneum have been classified classically according to their lining on histology into four categories—endothelial, epithelial, mesothelial, and others (germ cell tumors, sex cord gonadal stromal tumors, cystic mesenchymal tumors, fibrous wall tumors, and infectious cystic peritoneal lesions). In this article, we will proceed to classify cystic peritoneal lesions focusing on the degree of radiological complexity into three categories—simple cystic, mildly complex, and cystic with solid component lesions. Many intra-abdominal collections within the peritoneal cavity such as abscess, seroma, biloma, urinoma, or lymphocele may mimic primary peritoneal cystic masses and need to be differentiated. Clinical history and imaging features may help differentiate intra-abdominal collections from primary peritoneal masses. Lymphangiomas are benign multilocular cystic masses that can virtually occur in any location within the abdomen and insinuate between structures. Ultrasound may help differentiate enteric duplication cysts from other mesenteric and omental cysts in the abdomen. Double-layered wall along the mesenteric side of bowel may suggest its diagnosis in the proper clinical setting. Characteristic imaging features of hydatid cysts are internal daughter cysts, floating membranes and matrix, peripheral calcifications, and collagenous pericyst. Non-pancreatic psuedocysts usually have a fibrotic thick wall and chylous content may lead to a fat-fluid level. Pseudomyxoma peritonei appears as loculated fluid collections in the peritoneal cavity, omentum, and mesentery and may scallop visceral surfaces. Many of the primary cystic peritoneal masses have specific imaging features which can help in accurate diagnosis and management of these entities. Knowledge of the imaging spectrum of cystic peritoneal masses is necessary to distinguish from other potential cystic abdominal mimicker masses. Springer Science+Business Media New York, 2014 Cystic peritoneal lesions nationallicence Lymphangioma nationallicence Duplication enteric cyst nationallicence Hydatid cyst nationallicence Pseudomyxoma peritonei nationallicence Non-pancreatic pseudocyst nationallicence Arraiza María Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut Metser Ur Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut Vajpeyi Rajkumar Department of Pathology, University Health Network, University of Toronto, 200 Elizabeth Street, M5G 2C4, Toronto, ON, Canada aut Khalili Korosh Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut Hanbidge Anthony Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut Kennedy Erin Department of General Surgery, Mount Sinai Hospital, University of Toronto, 600 University Ave, M5G 1X5, Toronto, ON, Canada aut Ghai Sangeet Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut Abdominal Imaging Springer US; http://www.springer-ny.com 40/4(2015-04-01), 875-906 0942-8925 40:4<875 2015 40 261 https://doi.org/10.1007/s00261-014-0250-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00261-014-0250-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arraiza María Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Metser Ur Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Vajpeyi Rajkumar Department of Pathology, University Health Network, University of Toronto, 200 Elizabeth Street, M5G 2C4, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Khalili Korosh Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Hanbidge Anthony Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Kennedy Erin Department of General Surgery, Mount Sinai Hospital, University of Toronto, 600 University Ave, M5G 1X5, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Ghai Sangeet Joint Department of Medical Imaging, University Health Network - Mount Sinai Hospital - Women's College Hospital, University of Toronto, 585 University Avenue, M5G 2N2, Toronto, ON, Canada aut NATIONALLICENCE 773 0- Abdominal Imaging Springer US; http://www.springer-ny.com 40/4(2015-04-01), 875-906 0942-8925 40:4<875 2015 40 261