Nomenclature of Benign tumor Histogenensis morphologic characteristics F -oma benign histiocytoma, lipoma, fibroma angloma adenoma, squamous papilloma mucinous cystadenoma, serous cystadenomaNomenclature of Benign tumor Histogenensis + morphologic characteristics + -oma • benign histiocytoma, lipoma, fibroma, angioma • adenoma, squamous papilloma • mucinous cystadenoma, serous cystadenoma