Retroperitoneal lipoma arising from the urinary bladder

Retroperitoneal benign lipomas are extremely rare and represent about 2.9% of all primary retroperitoneal tumors. About 80% of the tumors in the retroperitoneal cavities are malignant neoplasms. We experienced a case of a retroperitoneal lipoma simulating an ovarian mature cystic teratoma. A diagnos...

Full description

Bibliographic Details
Main Authors: Hisato Kobayashi, Hiroshi Ozasa, Masaya Hirose, Tomoyuki Shirase, Tomoko Kim, Michikazu Nagura, Fumitomo Nishimura, Yukio Yamanishi, Megimi Ohnaka, Naoyuki Miyagawa, Masafumi Koshiyama, Shingo Ukita
Format: Article
Language:English
Published: SAGE Publishing 2009-07-01
Series:Rare Tumors
Subjects:
Online Access:http://www.pagepress.org/journals/index.php/rt/article/view/1051
Description
Summary:Retroperitoneal benign lipomas are extremely rare and represent about 2.9% of all primary retroperitoneal tumors. About 80% of the tumors in the retroperitoneal cavities are malignant neoplasms. We experienced a case of a retroperitoneal lipoma simulating an ovarian mature cystic teratoma. A diagnosis was correctly made by magnetic resonance imaging (MRI) prior to surgery, and a total tumorectomy was performed. The retroperitoneal lipoma was recognized to have arisen from the urinary bladder. Histological sections revealed a tumor consisting of typical adipose cells without atypia. These types of lipomas should be carefully followed-up because they often recur and undergo malignant transformations.
ISSN:2036-3603
2036-3613