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检(TBNA)对变的诊断价值。

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罕见之，一般分良性成熟畸胎及包含精细胞和非精细胞在内的恶性。