A case of carcinoma of the meninges, diagnosed through the clinical picture and the finding of neoplastic cells in the cerebrospinal fluid is reported. The post-mortem examination showed a papillary carcinoma of the stomach with metastases in the retroperitoneal space, in the subarachnoideal space infiltrating the spinal roots, in the lymphatic vessels of the nerve trunks, in the dura-mater and the spinal cord.