Uterine Serosal Inclusion Cysts with Greater Omentum Involvement in a Cat

• Published in: Journal of comparative pathology Vol. 199; pp. 37 - 42
• Main Authors: Kaya, Muhammed T., Kuruca, Nilufer, Kanat, Mustafa, Akca, Fatma B., Gulbahar, Mustafa Y.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-11-2022
• Subjects: cat; greater omentum; serosal inclusion cyst; uterus; greater omentum; uterus; serosal inclusion cyst; cat
• ISSN: 0021-9975; 1532-3129
• DOI: 10.1016/j.jcpa.2022.09.008

A 7-year-old nulliparous Chinchilla queen was admitted to a veterinary clinic for routine ovariohysterectomy. Examination of the uterus, greater omentum and varicose ovarian veins revealed multiple thin-walled cysts filled with a transparent fluid over the serosal surfaces of these organs. Histologically, the cysts were of variable size, filled with a small amount of mucinous fluid, and had thin walls that contained hypocellular collagen and a few small calibre vessels. The inner and outer epithelium of the cyst walls and the cells that lined the uterine serosa were immunopositive for cytokeratin and vimentin, suggesting a mesothelial origin. Alpha-smooth muscle actin immunolabelling was patchy or continuous in smooth muscle in the wall of many of the cysts.