Background: Primary malignant melanoma of the nose and paranasal sinus is a rare disease with poor prognosis.
Background: Primary malignant melanoma of the nose and paranasal sinus is a rare disease with poor prognosis.
摘要背景：原发于鼻腔及副鼻窦之黏膜恶性黑色素瘤是一极为少见且预后不好的疾病。