Spiral colon intussusception in a three-year-old bull.

Intussusception of the spiral colon was diagnosed in a 3-year-old Charolais bull. Necropsy revealed the intussusception to involve approximately 40 cm of the first centripetal gyrus of the spiral loop, beginning 70 cm distal to the ileocolic junction. Predisposing lesions were not noticed in the mesentery or lumen of the affected intestine; however, the involved intestine was necrotic. Surgical resection of the lesion was not attempted because of the compromised nature of the involved large intestine and because of the inability to exteriorize the region in the standing animal.