the presence of lymphocytes , histiocytes , macrophages , blood vessels with prominent endothelial cells and peripheral sclero-hyalinized connective tissue may pose problems in the differential diagnosis with sclerosing hemangioma , pseudolymphoma , nodular amyloidosis , pulmonary hyalinizing granuloma , chronic abscess and neoplasms of true histiocytic origin .
C0019612
histiocytes
C0002991
sclerosing hemangioma