Spontaneous regression of squamous cell lung carcinoma with adrenal metastasis.

A 61-year-old man was found to have squamous cell carcinoma of the left hilum with metastasis to the left adrenal gland documented by needle aspiration. About two years later, the primary tumor is not detectable, and the adrenal gland is of normal size on follow-up computerized tomography. To our knowledge, this is the first documented case of spontaneous regression of squamous cell carcinoma of the lung with adrenal metastasis.