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Case Reports in Veterinary Medicine
Volume 2011, Article ID 436752, 5 pages
http://dx.doi.org/10.1155/2011/436752
Case Report

Poorly Differentiated Uterine or Cervical Sarcoma in a Young Dog

1Cellular and Molecular Pathology Branch, NIEHS/NIH, 111 Alexander Drive, MD B3-06, Research Triangle Park, NC 27709, USA
2Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC 27607, USA

Received 10 May 2011; Accepted 31 May 2011

Academic Editors: M. Bugno-Poniewierska, K. Hittmair, and J. S. Munday

Copyright © 2011 Michelle C. Cora and Jennifer A. Neel. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A 1.5 year old, female, spayed, Labrador retriever with a history of three abdominal surgeries within the previous two months presented to the North Carolina State University Veterinary Teaching Hospital for evaluation of a pelvic inlet mass causing fecal tenesmus, obstipation, and dysuria. Abdominal ultrasound revealed a caudal abdominal mass extending into the pelvic cavity. Cytologic evaluation of the mass showed a pleomorphic round to fusiform cell population with histiocytic and suppurative inflammation. The primary differential was neoplasia, but inflammation with cellular pleomorphism could not be excluded. Via histopathology and immunohistochemistry, a diagnosis of poorly differentiated sarcoma originating from the uterus or cervix with widespread intra-abdominal dissemination and metastasis was made. Sarcomas of any type are rare in young dogs with only sporadic cases of poorly or undifferentiated sarcomas reported. This case is a unique presentation of an aggressive, poorly differentiated sarcoma arising from the cervix or uterus in a young dog and illustrates the importance of histologic evaluation of surgically resected tissues that are abnormal in appearance.