J Biomed Res.
2013 Mar;14(1):47-50.
Chronic pyometra due to bilateral ovarian tumors in a South American sea lion
- Affiliations
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- 1Department of Veterinary Pathology, College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea. jeongks@knu.ac.kr
- 2Institute of Natural Medicine, College of Medicine, Hallym University, Chunchon 200-702, Korea.
- 3Stem Cell Therapeutic Research Institute, Kyungpook National University, Daegu 702-701, Korea.
- 4Department of Clinical Pathology, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea.
Abstract
- A 14-year-old female South American sea lion (Otaria byronia) with persistent vaginal secretion and chronic hemorrhagic diarrhea was encountered. During postmortem examination, the uterus was found to resemble a balloon with mucosal congestion and was filled with grayish milky material. The ovaries also had abnormal features, including necrotic surface lesions and multiple whitish foci in the cut section. Hemorrhages and ulcerated changes due to toxemia were observed in other organs, including the liver, spleen, lung, intestines, and lymph nodes. Microscopically, the left ovary contained interlacing fascicles of fibroblast-like cells with blunt-end nuclei showing cytoplasmic positive immunoreactivity against alpha-smooth muscle actin and desmin. The right ovary contained cells with round to cigar-shaped nuclei showing cytoplasmic positive immunoreactivity against vimentin. In conclusion, based on classification of bilateral ovarian tumors as a leiomyoma in the left region and a fibroma in the right region, this sea lion was diagnosed with chronic closed pyometra.
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