Fig. 4From: Retroperitoneal fibrous tumor recurring as lung metastases after 10 years: a case reportHistological findings (HE and immunohistochemical staining). a Lung tumors consisted of spindle-shaped cells with a patternless arrangement and hemangiopericytomatous appearance (×200); b, c immunohistochemical stains were positive for b CD34 and c vimentin; d MIB-1 index was 20%Back to article page