Malignant lymphoma were found in 7 of 10 cases, cavernon hemangioma with malignant changes and angiosarcoma as well as fibrosarcoma were found in 1 of 10 cases.

• 7例恶性淋巴瘤，海绵状血管瘤恶变、恶性血管瘤和纤维肉瘤各1例。