Successful surgical treatment of gastric dilatation and volvulus in a pet domestic rat (Rattus norvegicus)

Gastric dilatation and volvulus has been reported in mammals and exotic pets. A 7-month-old, male neutered, pet domestic rat (Rattus norvegicus) was presented for acute onset anorexia, lethargy and regurgitation. The patient was hospitalised and ultrasound and radiographs under a general anesthesia showed severe gastric dilatation. Based on diagnostic imaging findings, a laparotomy was performed, demonstrating a 180° clockwise rotation of the stomach. Derotation and a gastrotomy to remove material foreign body was performed. The patient recovered fully from the procedure. Gastrointestinal diseases have been reported in domestic pet rats, however gastric dilatation and volvulus should be considered as a differential for an acutely vomiting/regurgitating patient with gastric dilatation.