lymphangioma macrocystic lymphatic malformation https://github.com/monarch-initiative/mondo/issues/6740 https://github.com/monarch-initiative/mondo/issues/6747 https://www.malacards.org/card/macrocystic_lymphatic_malformation icd11.foundation:1525487462 cavernous lymphangioma UMLS:C0205828 NCIT:C53316 MEDGEN:104729 GARD:0006010 cavernous lymphatic malformation macrocystic lymphangioma Orphanet:79489 NANDO:1200881 A lymphangioma characterized by the presence of thin-walled cavernous lymphatic spaces. MONDO:0019328