lymphangioma lymphangioendothelioma MEDGEN:7411 GARD:0024485 A lymphangioma characterized by the presence of collagen bundle formation. It has an indolent clinical course and may be associated with skin plaques. NCIT:C3203 acquired progressive lymphangioma EFO:1001026 UMLS:C0024217 SCTID:403975006 MONDO:0006841