Medical imaging of well-differentiated liposarcoma arising from the falciform fat in a dog

Abstract

A 7-year-old castrated male Cocker spaniel dog was referred to Gyeongsang National University Veterinary Medical Teaching Hospital with a severe abdominal distension, A huge, inhomogeneous fat opacity mass was identified on the abdomen radiographic survey. From the abdominal ultrasonographic examination, the mass was found to have irregular marginated hyperechoic capsule with cellular hypoechoic fluids inside. On the computed tomography, an encapsulated inhomogeneous mass was identified with fat attenuation peripheral and soft tissue attenuation inside. The origin of the mass was confirmed as falciform fat by surgical excision. The resected mass appeared to be a firm reddishbrown color with a smooth surface. The histopathological appearance was a well-differentiated liporsarcoma. The patient has no recurrent signs 1 month after surgery.