Adenocarcinoma lung presenting with meningeal carcinomatosis.

Meningeal infiltration by malignant metastasis process without brain parenchymal involvement is very unusual event in patients with bronchogenic carcinoma. This manuscript describes a case of adenocarcinoma right lung in a 48-year old male having persistent headache. The cerebrospinal fluid cytology revealed the presence of metastatic deposits of adenocarcinoma lung that confirmed the diagnosis of meningeal carcinomatosis.