Case report: Fundic gland polyps caused by long-term omeprazole use in a Maltese dog

• Published in: Frontiers in veterinary science 2023, Vol.10, p.1287335-1287335
• Main Authors: Lee, Haemin, Kim, Sanggu, Lee, Dohee, Chae, Yeon, Yun, Taesik, Yang, Mhan-Pyo, Kang, Byeong-Teck, Kim, Soochong, Kim, Hakhyun
• Format: Report
• Language: English
• ISSN: 2297-1769; 2297-1769
• DOI: 10.3389/fvets.2023.1287335

Long-term use of proton-pump inhibitors can induce fundic gland polyps in the human stomach. However, this phenomenon has not been described in the veterinary literature. A 5-year-old intact female Maltese dog was referred to our hospital with chronic intermittent vomiting. The dog had been administered omeprazole (0.7-1.0 mg/kg PO q24 h) for the management of hydrocephalus for over 4 years; the omeprazole dose was increased to 10 mg/kg PO q24 h 8 months prior to presentation at referring hospital. Abdominal ultrasonography revealed marked thickening of the gastric wall with multi-lobulated, thickened folds. Subsequent endoscopy revealed marked polypoid lesions, and histological examination of the biopsy samples was consistent with the fundic gland polyps associated with proton-pump inhibitor use in humans. The lesions resolved after cessation of omeprazole, as assessed by ultrasonography. This report describes a case of fundic gland polyps following the long-term administration of omeprazole in a dog.