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. 2023 Nov-Dec;37(6):2375-2384.
doi: 10.1111/jvim.16876. Epub 2023 Sep 29.

Recurrence and survival in dogs with excised colorectal polyps: A retrospective study of 58 cases

Tristan Méric  1 , Julien Issard  1 , Thomas Maufras  2 , Marine Hugonnard  3 , Odile Senecat  1 , Alexis Lecoindre  4 , Rodolfo Oliveira Leal  5 , Coralie Bertolani  6 , Olivier Toulza  2 , Patrick Lecoindre  4 , Elise Brisebard  7 , Mireille Ledevin  7 , Thibaut Larcher  7 , Amandine Drut  1 , Elodie Darnis  8 , Juan Hernandez  1
Affiliations

Recurrence and survival in dogs with excised colorectal polyps: A retrospective study of 58 cases

Tristan Méric et al. J Vet Intern Med. 2023 Nov-Dec.

Abstract

Background: Compared to humans, colorectal polyps are relatively rare in dogs. Epidemiological and prognostic data remain accordingly sparse, although they could help veterinary clinicians in the management of these cases.

Objectives: To report the epidemiological data of dogs with colorectal polyps and identify factors associated with recurrence and survival.

Animals: Fifty-eight client-owned dogs with colorectal polyps admitted to 7 veterinary hospitals (53 dogs from France, 5 dogs from Spain, and 4 dogs from Portugal) were included.

Methods: Retrospective multicentric cohort study. Medical records and long-term outcome of the dogs were reviewed. When available, histological samples were reassessed by 2 board-certified pathologists according to the revised Vienna classification (RVC).

Results: The West Highland White Terrier (WHWT) breed was significantly associated with the presence of colorectal polyps (OR: 20; 95% CI: 7.5-52; P < .001). The overall median time to recurrence was not reached after 2000 days. The overall estimated median survival time was 1640 days. WHWT breed and larger polyps were significantly associated with a shorter time of polyp recurrence after surgical removal (respectively, P = .05 and P = .01).

Conclusions and clinical importance: The probability of recurrence of colorectal polyps in dogs is low, but increased in WHWTs and larger polyps, which might benefit from routine screening after removal. No effective predictors of polyp recurrence and survival were identified using the RVC.

Keywords: cancer; colon; colorectal polyp; dog; outcome; tumor.

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Conflict of interest statement

Authors declare no conflict of interest.

Figures

FIGURE 1
FIGURE 1
Summary of owner's concerns (A) and clinical findings at physical examination (B). Presence of blood included blood tainting the perianal area and blood observed on glove after digital rectal examination. Detectable mass included visible or palpable mass.
FIGURE 2
FIGURE 2
Kaplan‐Meier curve estimating survival probability over time.
FIGURE 3
FIGURE 3
Kaplan‐Meier curve comparing survival using polyp removal methods of colectomy and endoscopic diathermy or pull‐out (P = .05).
See this image and copyright information in PMC

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