Spherocytosis as an indicator of fragmentation injury in dogs with splenic torsion.

To describe the presentation, diagnosis, and treatment of 4 cases of splenic torsion with associated spherocytosis. 4 client-owned dogs with spherocytosis and splenic torsion. Each dog presented with nonspecific clinical signs, and 3 out of 4 dogs were anemic on presentation. The diagnosis of splenic torsion was made with abdominal ultrasound or CT and confirmed during exploratory laparotomy. Spherocytosis was described as occasional (patient 1), rare (patient 2), and low number (patients 3 and 4). Two dogs survived to hospital discharge, and 2 dogs died following cardiorespiratory arrest. Spherocytosis has not previously been reported in cases of splenic torsion, and identification of spherocytes on blood film evaluation warrants further investigation. The cause of spherocytosis in splenic torsion remains unknown but may be associated with microangiopathic fragmentation injury.