A non-capsulated multi-nodular soft tissue tumor composed of well-formed and immature capillary vascular spaces. Some of the spaces contain sequestered RBCs. In some nodules lesion is more cellular and shows short bundles of spindle cells exhibiting glomeruloid pattern but no evidence of mitosis amid these spindle cells. Areas of dense lymphoplasmacytic infiltration are seen. Tumor extending to margins of excision. Over all picture is consistent with a Kaposiform hemangioendothelioma.
Scalp mass.
Skin eclipse measured 1.2x0.8x0.7 cm, showing ulcerated area measuring 0.8x0.5 cm, totally embedded.
Scalp, Biopsy:
Comment:
This lesion is a locally aggressive tumor which shows no tendency to spontaneous regression. Patient outcome is highly dependent on site (scalp is generally a favorable site), clinical extent and whether there is supervening thrombocytopenia. When such tumors are solitary and completely excised, prognosis is expected to be excellent.