Intraosseous cavernous hemangiomas are benignneoplasms which comprise only up to 1% of all osseous tumors and 7-10% of skull tumors.
骨内海绵状血管瘤是一种良性的骨肿瘤,仅占所有骨肿瘤的1%、颅骨肿瘤的7 - 10%。
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Both benign and malignant endocrine neoplasms demonstrate some degree of cellular pleomorphism, so it is not easy to tell benign from malignant on histologic grounds alone.
Lymphoid neoplasms of the orbit include a wide range of classifications ranging from reactive lymphoid hyperplasias to benign pseudotumors to malignant lymphomas.