Hemangiopericytoma of the sigmoid mesentery: report of a case with immunohistochemical findings.
Hemangiopericytoma has been described in various sites in the body but only rarely in the mesocolon. This report describes the clinical course of an 83-year-old man whose mesosigmoidal tumor (hemangiopericytoma) was resected on 11 November 1994. Immunostaining was done with the following primary antibodies: alpha-actin, vimentin, factor VIII-related antigen, chromogranin, and S-100. Staining for factor VIII-related antigen was strongly positive in the endothelial cells of the capillaries, but negative in the tumor cells. The tumor cells contained immunoreactive vimentin, but demonstrated no alpha-actin, chromogranin, or S-100. Since the operation, the patient has been disease-free for 11 months.
Nakagawa
T
T
Department of Surgery, Furano Kyokai Hospital, Japan.
Shinoda
Y
Y
Masuko
Y
Y
Ohshima
T
T
Shirota
K
K
Yoshida
Y
Y
Ogawa
K
K
Uchino
J
J
D000199:Actins / Q000032:analysis; D000368:Aged; D000369:Aged, 80 and over; D006393:Hemangiopericytoma / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D009418:S100 Proteins / Q000032:analysis; D012811:Sigmoid Neoplasms / Q000473:pathology*; D014746:Vimentin / Q000032:analysis; D014841:von Willebrand Factor / Q000032:analysis
D000199:Actins; D009418:S100 Proteins; D014746:Vimentin; D014841:von Willebrand Factor