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J Vet Sci 2017; 18(4): 559-561  https://doi.org/10.4142/jvs.2017.18.4.559
Intra-abdominal necrotic lipoma diagnosed by computed tomography as a paraprostatic cyst
Hye-jin Kim, Su-yeon Kim, Seong-soo Kim, Soo-kyung Yun, Jeo-soon Lee, Sung-kyun Hong, Wan-hee Kim, Yong-baek Kim, Junghee Yoon, Mincheol Choi*
Department of Veterinary Medical Imaging and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
Correspondence to: Mincheol Choi
Tel: +82-2-880-1278; Fax: +82-2-880-8662; E-mail: mcchoi@snu.ac.kr
Received: August 12, 2016; Revised: February 3, 2017; Accepted: February 22, 2017; Published online: December 31, 2017.
A dog with a history of diarrhea and dyschezia exhibited an oval-shaped, soft-tissue opacity mass in the abdomen on radiographs. CT examination revealed a large fluid-filled structure displacing the urinary bladder, prostate, and colon. The mass had continuity with the prostate; therefore, it was tentatively diagnosed as a paraprostatic cyst. Cytologic examination was performed and the mass was considered a non-inflammatory cyst. However, after surgery, histopathologic examination revealed a necrotic, inflamed cystic lipoma. This case shows that unusual intra-abdominal lipomas may have a cystic appearance.
Keywords: diagnostic imaging, dogs, lipoma, paraprostatic cysts, surgery

© 2017 The Korean Society of Veterinary Science.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.