Pituitary metastasis as the initial presentation of small cell lung carcinoma diagnosed by endobronchial ultrasound-guided transbronchial needle aspiration
Pituitary metastasis as the initial presentation of small cell lung carcinoma (SCLC) is rare, occurring in <1% of symptomatic pituitary lesions, and poses a significant diagnostic challenge when the primary malignancy is unknown. A 75-year-old man with a 30-pack-year smoking history presented with 2 months of progres...