Hee Mang Yoon MD, Presenter: Nothing to Disclose

Young Ah Cho, Abstract Co-Author: Nothing to Disclose

Jin Seong Lee MD, Abstract Co-Author: Nothing to Disclose

Ah Young Jung, Abstract Co-Author: Nothing to Disclose

Hye-Kyung Yoon MD, Abstract Co-Author: Nothing to Disclose

Chong Hyun Yoon, Abstract Co-Author: Nothing to Disclose

Cystic masses located in the left upper quadrant (LUQ) of the abdomen is not uncommon and diverse group of lesions arise from the major organs in this space; liver, pancreas, stomach, spleen, and mesentery. Diagnosis is often challenging for radiologists because of difficulty to identify precise localization of the lesion, determine the organ of origin, and characterize the specific features of various tumors. In this exhibit, we systematically describe important clues in the diagnosis and imaging features of LUQ cystic masses. Being familiar with the imaging and clinical features of various LUQ cystic masses facilitates accurate diagnosis and treatment.

1. Introduction Anatomy of the left upper quadrant of the abdomen Clues for identification of the organ of origin Beak sign, Phantom organ sign, Embedded organ sign 2. Differential diagnosis of the mass according to the organ of origin A. Tumors arising from the pancreas: Pseudocyst, Solid pseudopapillary tumor, lymphoepithelial cyst, B. Tumors arising from the stomach: Duplication cyst C. Tumors arising from the spleen: Pseudocyst, epidermoid cyst, fungal abscess, infarction, hemangioma, lymphangioma. D. Tumors arising from the mesentery: Lymphangioma, teratoma. E. Tumors arising from the liver: cyst, cystic neoplasm 3. Summary  

http://abstract.rsna.org/uploads/2014/14008543/14008543_7mro.pdf

Yoon, H, Cho, Y, Lee, J, Jung, A, Yoon, H, Yoon, C, Pediatric Cystic Mass in the LUQ: The Small and Crowded Space.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14008543.html