bone benign neoplasm osteoma MONDO:0005166 A benign, well-circumscribed, bone-forming neoplasm predominantly composed of lamellar bone. It usually arises from the calvarial, facial, or jaw bones. It is usually asymptomatic but it may cause local swelling or obstruction of the paranasal sinuses. Asymptomatic cases have an indolent clinical course. osteoma (disease) SCTID:302858007 GARD:0024158 osteoma (disease) UMLS:C0029440 MESH:D010016 osteoma, benign MEDGEN:18220 NCIT:C3296 EFO:0002423 HP:0100246 ICDO:9180/0 osteoma