Pardeep Kumar Mittal MD, Presenter: Nothing to Disclose

Courtney Ann Coursey Moreno MD, Abstract Co-Author: Nothing to Disclose

Nima Kokabi MD, Abstract Co-Author: Nothing to Disclose

William C. Small MD, PhD, Abstract Co-Author: Nothing to Disclose

Sadhna Nandwana MD, Abstract Co-Author: Nothing to Disclose

Juan Camilo Camacho, Abstract Co-Author: Nothing to Disclose

1.To demonstrate diagnostic challenges including  localization of the mass , extent of invasion and characterization of specific pathology such as liposarcoma , leiomyosarcoma ,extragonadal germ cell, paragangliomas and sarcoma  etc. 2.To illustrate patterns of spread, tumor components, tumor vascularity helping in narrowing the differential diagnosis  

Presentation will includes  MRI  characterization of retroperitoneal tumors using a dedicated less than 30 minute protocol of abdominopelvic MRI without and with contrast medium. Imaging findings will be correlated with histopathology  Primary retroperitoneal (RP) tumors originating in the retroperitoneum but outside the major RP organs are uncommon. One of the challenges to radiologist is correct localization of the retroperitoneal lesions , characterization as well extent of the disease, involvement of adjacent structures, identifying the organ of origin. Hence MR imaging is valuable in evaluating RP tumors particularly in staging, assessment of vascular invasion and fat content due its excellent soft tissue contrast. Specific diagnosis might be difficult to achieve because of overlapping features but certain clues will help in narrowing the differential diagnosis such as liposarcoma,leiomysarcoma,solitary fibrous tumor, paraganglioma and  lymphoma etc.  

http://abstract.rsna.org/uploads/2014/14005844/14005844_zjkv.pdf

Mittal, P, Coursey Moreno, C, Kokabi, N, Small, W, Nandwana, S, Camacho, J, MR Imaging Characteristics of Retroperitoneal Tumors: Diagnostic Clues, Differential Diagnosis and Histopathological Correlation.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14005844.html