Objective To explore the significance of transbronchial needle aspiration (TBNA) in diagnosing paratracheal mediastinal lesions.

目的探讨经纤维支气管镜针吸活(TBNA)隔病变的诊断价值。

Primary mediastinal germ-cell tumors (GCTs) without gonadal involvement are rare and can be divided into benign mature teratoma and malignant seminoma or nonseminoma.

摘要无生殖腺体犯之原发性膈腔生殖芽细胞肿瘤之肿瘤，一般分良性成熟畸胎瘤及包含精细胞瘤和非精细胞瘤在内的恶性肿瘤。