Ectopic ossification presenting as osteoid metaplasia in a salivary mucocele in a Shih Tzu dog.

Background: Salivary mucocele is an accumulation of saliva in a single or multiloculated cavity lined by connective tissue that is contiguous to a salivary gland-duct complex and is the most common condition affecting the salivary glands in dogs. Occasionally, different types of metaplastic lesions, such as squamous and osseous metaplasia - which are rare lesions in animals - can be observed in association with salivary mucocele.

Case Presentation: A right facial enlargement was suddenly observed in a 4-year-old non-spayed female Shih-Tzu dog.

Ovarian mucinous cystadenoma in a gray brocket deer (Mazama gouazoupira).

An ovarian mucinous cystadenoma is described in a gray brocket deer (Mazama gouazoupira). The tumor was histologically characterized by the presence of cysts and proliferation of papillae, both lined by single- or multi-layered pleomorphic epithelial cells that contained alcian blue-positive mucins.