title: Cystic mammary adenocarcinoma associated with a prolactin-secreting pituitary adenoma in a New Zealand white rabbit (Oryctolagus cuniculus).
abstract: Pituitary adenoma in a rabbitA 44-mo-old, female, nulliparous New Zealand White Rabbit (Oryctolagus cuniculus) presented with bilaterally diffusely enlarged mammary glands with enlarged, discolored teats that exuded brown, mucoid discharge. The complete blood count and serum chemistry panels were within normal limits, bacteria were not isolated from a culture of the discharge, and the clinical signs did not resolve with antibiotic treatment. Computed tomography and serum prolactin levels supported the diagnosis of mammary gland dysplasia, possibly due to a prolactin-secreting pituitary adenoma. Histologic evaluation confirmed the presence of a pituitary adenoma, mammary hyperplasia, dysplasia, and cystic mammary adenocarcinoma. Immunohistochemical staining confirmed the presence of abundant prolactin secreting cells in the pituitary adenoma. This is the second report of hyperprolactinemia with mammary dysplasia in rabbits, and the first report of cystic mammary adenocarcinoma associated with a prolactin-secreting pituitary adenoma in a rabbit.
authors.affiliation: Wake Forest University Health Sciences, Winston-Salem, NC, USA. paul.sikoski@vanderbilt.edu
authors.forename: Paul
authors.initials: P
authors.lastname: Sikoski
authors.forename: James
authors.initials: J
authors.lastname: Trybus
authors.forename: J Mark
authors.initials: JM
authors.lastname: Cline
authors.forename: F Salih
authors.initials: FS
authors.lastname: Muhammad
authors.forename: Andrew
authors.initials: A
authors.lastname: Eckhoff
authors.forename: Josh
authors.initials: J
authors.lastname: Tan
authors.forename: Mandy
authors.initials: M
authors.lastname: Lockard
authors.forename: Tammy
authors.initials: T
authors.lastname: Jolley
authors.forename: Susan
authors.initials: S
authors.lastname: Britt
authors.forename: Nancy D
authors.initials: ND
authors.lastname: Kock
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000236:Adenoma / Q000378:metabolism*; D000818:Animals; D008325:Mammary Neoplasms, Experimental / Q000473:pathology*; D011388:Prolactin / Q000378:metabolism*; D011817:Rabbits
chemical_list: D011388:Prolactin