Vascular Tumors
Prognosis Hemangiomas → benign lesions Hemangioendothelioma → good prognosis Angiosarcoma → poor prognosis 51.1 Characteristics of the Single Entities 51.1.1 Hemangioma of Bone Definition: Benign solitary tumor composed of newly formed vessels. Epidemiology: Rare tumors, accounting…
Liposarcomas
Localization: Anywhere there is fat. Most common in thigh, retroperitoneum, inguinal region, and popliteal fossa. Never in the hands, feet, and neck. Clinical: Insidiously growing, deep-seated, ill-defined mass that usually…
Parosteal Osteosarcoma
Localization: Almost exclusive of the long bones, it originates from the metaphysis. Rare in the diaphyses, exceptional in flat bones. The most typical site is the distal metaphysis of the…
Vascular Tumors: Hemangioma, Epithelioid Hemangioendothelioma, and Angiosarcoma
Clinical: Superficial (cutaneous/subcutaneous) hemangiomas are reddish-wine-colored painless lesions, generally present at birth. Intramuscular hemangioma arises within the belly of a single muscle; only in the hand and foot it may…
