Zhaoxia Jiang, Presenter: Nothing to Disclose

Weijun Peng MD, Abstract Co-Author: Nothing to Disclose

Large masses around the Morison’s pouch may originate from the right adrenal, kidney, right lobe of liver, retroperitoneum, or peritoneum. The differential diagnosis depends on anatomic landmarks and lesion features. This exhibit will discuss the diagnostic pitfalls and clues.

1 Brief anatomy 2 Review imaging findings of   various large masses involving the Morison's pouch, which originate from liver (HCC, hemangioma, neuroendocrine carcinoma, sarcoma), right adrenal(myelolipoma, pheochromocytoma, cortical carcinoma, metastatic tumor) , right kidney (RCC, angiomyolipoma), retroperitoneum (neuroblastoma, liposarcoma, lymphoma,), and peritoneum(pseudomyxoma, lymphangioma). 3 Discuss clues of differential diagnosis.

A wide variety of neoplasms occur around the Morison's pouch. The knowledge of imaging characteristics of these lesions and anatomic landmarks allows the accurate diagnosis.

Jiang, Z, Peng, W, Large Masses Involving Morison's Pouch: A Pictorial Review.  Radiological Society of North America 2008 Scientific Assembly and Annual Meeting, February 18 - February 20, 2008 ,Chicago IL. http://archive.rsna.org/2008/6022402.html