Nervous system metastasis from carcinoma of the lung: three unusual cases.

Carcinoma of the lung, fairly common in middle aged men, may be silent and have its first manifestation as a metastatic lesion. In 25% to 35% of such cases the metastases are to the nervous system. Management is dependent upon many factors but satisfactory results can be obtained with proper screening. Three cases of nervous system metastases are presented-one occurred in an unusual site; one had an unusual clinical syndrome and one had prolonged latency.