Polypoid Adenomas Secondary to Inflammatory Colorectal Polyps in 2 Miniature Dachshunds

• Published in: Journal of Veterinary Medical Science Vol. 75; no. 4; pp. 535 - 538
• Main Authors: IGARASHI, Hirotaka, OHNO, Koichi, OHMI, Aki, TSUKAMOTO, Atsushi, NAKASHIMA, Ko, FUJINO, Yasuhito, UCHIDA, Kazuyuki, TSUJIMOTO, Hajime
• Format: Journal Article
• Language: English
• Published: Japan JAPANESE SOCIETY OF VETERINARY SCIENCE 2013; Japan Science and Technology Agency
• Subjects: Adenomatous Polyps - drug therapy; Adenomatous Polyps - pathology; Adenomatous Polyps - surgery; Adenomatous Polyps - veterinary; Animals; Colonic Polyps - drug therapy; Colonic Polyps - pathology; Colonic Polyps - surgery; Colonic Polyps - veterinary; Colorectal Neoplasms - drug therapy; Colorectal Neoplasms - pathology; Colorectal Neoplasms - surgery; Colorectal Neoplasms - veterinary; Dog Diseases - drug therapy; Dog Diseases - pathology; Dog Diseases - surgery; Dogs; inflammatory colorectal polyp; Male; miniature dachshunds; Neoplasm Recurrence, Local - drug therapy; Neoplasm Recurrence, Local - pathology; Neoplasm Recurrence, Local - surgery; Neoplasm Recurrence, Local - veterinary; polypoid adenoma
• ISSN: 0916-7250; 1347-7439
• DOI: 10.1292/jvms.12-0166

Two miniature dachshunds, a 7-year-old neutered male and an 8-year-old male, presented with chronic hematochezia and tenesmus. A solitary pedunculated or multiple diffuse colorectal polyps were identified by colonoscopy and resected by polypectomy. Inflammatory colorectal polyps (ICRPs) were diagnosed according to histopathological findings. Both cases were treated with immunosuppressive therapy, and the clinical signs were resolved, although the colorectal polyps remained to some extent. Several months after the initial diagnosis, both cases presented with recurrence of hematochezia and enlargement of the polyps. A second colonoscopic polypectomy was performed, and adenoma was diagnosed histopathologically in both cases. ICRPs are a nonneoplastic disease, but their long-term prognosis is unknown. Careful follow-up seems to be important, and repetitive biopsy is recommended when growth of polyps is identified in miniature dachshunds with ICRPs.