benign neoplasm
 |__cell type benign neoplasm_____________
organ system benign neoplasm              |
 |__cardiovascular organ benign neoplasm__|
cardiovascular system disease             |
 |__cardiovascular organ benign neoplasm__|
 |__vascular disease______________________|
                                          hemangioma  11 rec.
                                           |__acquired hemangioma
                                           |__arteriovenous malformation
                                           |__arteriovenous malformations of the brain 1 rec.
                                           |__brain angioma
                                           |   |__cerebral angioma
                                           |__capillary hemangioma
                                           |   |__stork bite
                                           |__central nervous system hemangioma
                                           |__chorioangioma
                                           |__deep angioma
                                           |__gastric hemangioma
                                           |__glomeruloid hemangioma
                                           |__hemangioblastoma 10 rec.
                                           |   |__von Hippel-Lindau disease 10 rec.
                                           |__hemangioma of intra-abdominal structure
                                           |__hemangioma of liver
                                           |__hemangioma of lung
                                           |__hemangioma of peripheral nerve
                                           |__hemangioma of subcutaneous tissue
                                           |__histiocytoid hemangioma
                                           |__hobnail hemangioma
                                           |__intracranial structure hemangioma
                                           |   |__intracranial cavernous angioma
                                           |__intramuscular hemangioma
                                           |__perineural angioma
                                           |__pulmonary sclerosing hemangioma
                                           |__rapidly involuting congenital hemangioma
                                           |__sclerosing hemangioma
                                           |__scrotal angioma
                                           |__skin epithelioid hemangioma
                                           |__skin hemangioma
                                           |   |__angiokeratoma(+)
                                           |   |__angioma serpiginosum
                                           |   |__verrucous keratotic hemangioma
                                           |__spindle cell hemangioma
                                           |__subglottic angioma
                                           |__synovial angioma
                                           |__venous hemangioma