title: Multiple persistent vitelline duct cysts in a dog.
abstract: Persistent vitelline duct remnants, with the exception of Meckel's diverticulum in pigs and horses, are rare in animals. During an ovariohysterectomy of an 8-month-old Labrador Retriever, multiple fibrous nodules with cystic centers were found attached to the ileal serosa and in a mesodiverticular band attached to the abdominal wall. Histologic and ultrastructural evaluation revealed that the cysts were composed of well-differentiated intestine with mucosa, submucosa, and muscularis layers surrounded by a thick layer of fibrous connective tissue. The morphology and arrangement of lesions were consistent with multiple persistent vitelline duct cysts, a distinct condition related to Meckel's diverticulum. This case in a dog represents a unique presentation of this congenital anomaly in domestic animals.
authors.affiliation: Veterinary Diagnostic and Investigational Laboratory, Tifton, GA 31793, USA. kfrazier@tifton.cpes.peachnet.edu
authors.forename: K S
authors.initials: KS
authors.lastname: Frazier
authors.forename: A L
authors.initials: AL
authors.lastname: Liggett
authors.forename: E L
authors.initials: EL
authors.lastname: Styer
authors.forename: M E
authors.initials: ME
authors.lastname: Hines
authors.forename: G A
authors.initials: GA
authors.lastname: Hullinger
mesh_terms: D000818:Animals; D002828:Choristoma / Q000473:pathology / Q000662:veterinary*; D003560:Cysts / Q000473:pathology / Q000662:veterinary*; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D005260:Female; D007077:Ileal Diseases / Q000473:pathology / Q000662:veterinary*; D007082:Ileum / Q000648:ultrastructure; D007413:Intestinal Mucosa / Q000648:ultrastructure; D008467:Meckel Diverticulum / Q000473:pathology / Q000662:veterinary*; D014816:Vitelline Duct / Q000002:abnormalities / Q000473:pathology