Fig. 3From: Non-functional thyroid cystadenoma in three boxer dogsCase 1: Thyroid cystadenoma. The large cystic cavity is lined by cuboidal epithelial cells and contains scant proteinaceous fluid and cell debris. Tumour cells forming either follicles or solid nests surround the cyst and project into the lumen. H&E 20x and inset 400x magnificationBack to article page