Canine tarsal gland epitheliomas and adenomas: a retrospective study of 290 cases in Brazil

Abstract

Werner, et al.; Canine tarsal gland epitheliomas and adenomas: a retrospective study of 290 cases in Brazil. Braz J Vet Pathol, 2017, 10(1), 2 -9. DOI: 10.24070/bjvp.1983-0246.v10i1p2-9 Brazilian Abstract A total of 290 cases of tarsal gland adenomas and epitheliomas from canine patients were analyzed to determine the frequency and to better characterize their histopathological features. Tissue samples were examined in two veterinary pathology laboratories in Curitiba, Brazil, which receive samples from all over the country. Tarsal epitheliomas were significantly more frequent than tarsal adenomas (77.9% and 20.7%, respectively). In four cases (1.4%), the lesion contained both types of neoplasms. A total of 39 breeds were represented. The most common breeds were: English cocker spaniel (12.4%), poodle (10.3%) and Labrador retriever (9.3%). Mixed breed dogs represented 13.1% of the total. The upper eyelids were most commonly affected (65.2%), males and females were equally represented and there did not appear to be a predilection for either side of the face. Mitotic figures were most common in epitheliomas. The pigmented subtype was the most common form of epithelioma (59.7%). Whereas within the adenomas, the classic subtype (without inflammation or pigmentation) was the most common form (61.7%); and the inflamed subtype was also highly represented (20.0%).

Eye-related neoplasms in dogs: A retrospective study

“…The most commonly affected structure in our study was the Meibomian gland, agreeing with the literature (Dubielzig, 2017). Werner et al (2017) reported 9.4 years as the average age for Meibomian neoplasms, which is consistent with our findings (9.9 years). Silva et al .…”

“…(2013) analyzed a considerable number of ocular neoplasms (n = 173) finding numerous cases in dogs over 10 (43.2%) and 6-10 years (40.6%), and few cases in those under 5 years of age (9.9%). Several studies have evaluated ocular neoplasms, observing an age predilection, mainly in dogs between 8 and 11 years of age (Abarca et al ., 2002;Heath et al ., Eye neoplasms in dogs 2003;Laus et al ., 2008;Conceição et al ., 2010;Fernandez, 2013;Werner et al ., 2017). These reports are in agreement with our findings, where the age group with the highest incidence (8-11 years of age) presented significant difference when compared to the other age groups.…”

“…The only difference is that adenoma was slightly more frequent compared to epithelioma in our study. Werner et al . (2017) reported that Labrador retrievers was the breed most commonly affected by adenoma and epithelioma of the Meibomian glands, which is consistent with what is reported herein.…”