ABSTRACT
The pathological features of a mass in the back skin region of an 8-year-old castrated male dog are described herein. The cut section of the tumor was white to tan with a soft multilobulated mass containing hemorrhagic and necrotic foci and a mucinous-like composition. Microscopically, the tumor was composed of a mixture of lipocytes, lipoblasts, spindle cells and stellate cells and had a myxoid background. Oil red O staining revealed that the cytoplasm of neoplastic cells contained large numbers of lipid droplets. Immunohistochemically, tumor cells were positive for vimentin and S-100 protein. The skin mass was diagnosed as myxoid liposarcoma.
Subject(s)
Animals , Child , Dogs , Humans , Male , Adipocytes , Cytoplasm , Liposarcoma, Myxoid , S100 Proteins , Skin , Triacetoneamine-N-Oxyl , VimentinABSTRACT
Mirizzi syndrome is an uncommon cause of obstructive jaundice. It consists of the following elements: (1) an anatomic arrangement of the cystic duct such that it lies almost parallel to the common hepatic duct, (2) impaction of a gallstone in the cystic duct or neck of the gall bladder, (3) partial mechanical obstruction of the common hepatic duct by the stone itself or the resulting inflammatory reaction, and (4) recurrent cholangitis or ultimately cholangitic cirrhosis due to the partial obstruction. (continue...)