Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Histologic Type > Lymphatic Vessel Tumors > Lymphangiosarcoma Terms and Definitions

Lymphangiosarcoma

Medical Definition:	A malignant tumor originating from the endothelial cells of lymphatic vessels. Most lymphangiosarcomas arise in an arm secondary to radical mastectomy but they sometimes complicate idiopathic lymphedema. The lymphedema has usually been present for 6 to 10 years before malignant changes develop. (From Dorland, 27th ed; Holland et al., Cancer Medicine, 3d ed, p1866)
Guide Notes:	/blood supply /chem /second /secret /ultrastruct permitted; coord IM with precoord organ/neopl term (IM)

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