Piogranuloma mesentérico em um cão doméstico – relato de caso

Abstract

Focal injuries in the mesentery have as differential diagnoses abscesses, granulomas, neoplasms, and nodular fat necrosis. Mesenteric piogranuloma is a rare and poorly reported alteration in small animals; in cats, it is usually associated with feline infectious peritonitis virus (FIP), but it has also been described in cases of foreign bodies or fungal diseases in other species. Definitive diagnosis can be obtained through histopathological examination. This study aims to report the case of a female dog, approximately one year old, rescued with a history of vehicular trauma, treated at the Veterinary Hospital of the Federal University of Uberlândia (HOVET-UFU). The patient presented a fracture of the right femur, right coxofemoral luxation, abortion, and mesenteric piogranulomas associated with peritonitis. Abdominal ultrasound revealed two cavitated neoformations with regular and defined contours, irregular internal walls, and an echogenic interior with reverberation artifact formation. The diagnostic confirmation was obtained through histopathological examination, which revealed an inflammatory infiltrate composed of intact and degenerated neutrophils, macrophages, and typical connective tissue. This case highlights the importance of abdominal ultrasound examination for the identification of focal lesions in the mesentery.