title: Atresia ani in the dog: a retrospective study.
abstract: Congenital anomalies of the rectum and anus are rare in dogs. The most frequently reported anomaly is atresia ani. Four types of atresia ani have been reported, including congenital anal stenosis (Type I); imperforate anus alone (Type II) or combined with more cranial termination of the rectum as a blind pouch (Type III); and discontinuity of the proximal rectum with normal anal and terminal rectal development (Type IV). An increased incidence was found in females and in several breeds, including miniature or toy poodles and Boston terriers. Surgical repair is the treatment of choice, but postoperative complications can occur, including fecal incontinence and colonic atony secondary to prolonged preoperative distension.
authors.affiliation: Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996-4546, USA.
authors.forename: Maria L
authors.initials: ML
authors.lastname: Vianna
authors.forename: Karen M
authors.initials: KM
authors.lastname: Tobias
mesh_terms: D001003:Anal Canal / Q000002:abnormalities / Q000601:surgery; D000818:Animals; D001006:Anus, Imperforate / Q000235:genetics / Q000601:surgery / Q000662:veterinary*; D004283:Dog Diseases / Q000235:genetics / Q000601:surgery*; D004285:Dogs; D005242:Fecal Incontinence / Q000209:etiology / Q000662:veterinary; D005260:Female; D008297:Male; D010375:Pedigree; D011183:Postoperative Complications / Q000453:epidemiology / Q000662:veterinary; D012007:Rectum / Q000002:abnormalities / Q000601:surgery; D012189:Retrospective Studies; D012737:Sex Factors; D016896:Treatment Outcome