A case report of intrarenal epidermoid cysts in a yellow-bellied slider (Trachemys scripta scripta).

A 7-year-old yellow-bellied slider exhibited anorexia, decreased activity, generalised wasting of skeletal muscles and oedema. Haematology examination revealed increased phosphorus and decreased calcium levels. During necropsy performed after spontaneous death, a focal nodular lesion containing tan amorphous material was found in the left kidney. Histopathology examination revealed multiple cystic lesions lined by a multilayered squamous, occasionally cuboidal, and containing keratin. Epithelial cells and keratin material were cytokeratin-positive. These findings confirmed a diagnosis of the most likely congenital intrarenal epidermoid cysts.