[A Case of Carcinomatous Meningitis Due to Gastric Cancer].

A 43-year-old man was diagnosed with gastric cancer with diaphragm invasion and multiple lymph node metastases and underwent total gastrectomy. The histological diagnosis was por2>tub2, ypT4b(diaphragm), int, INF c, ly1, v1, ypN3, yp Stage ⅢC. Three months postoperatively, computed tomography showed recurrence in the peritoneum and multiple lymph nodes, and he received chemotherapy(RAM plus PTX). After initiating the third course of chemotherapy, he was hospitalized due to loss of appetite and fatigue. On the third day of hospitalization, he lost consciousness and had a temporary convulsion seizure. Thereafter, he complained of headache and nausea. Brain magnetic resonance imaging and cerebrospinal fluid examination lead to a diagnosis of carcinomatous meningitis due to gastric cancer. An Ommaya reservoir was placed, and intrathecal infusion with methotrexate(MTX)and cytarabine(Ara-C)was planned; however, intrathecal infusion could not be administered because of hepatic injury due to acute obstructive cholangitis. He died 6 months postoperatively. Carcinomatous meningitis has a rapidly progressive course with very poor prognosis. Early diagnosis is important, and the treatment should be initiated as soon as possible. Moreover, an effective standard treatment for carcinomatous meningitis needs to be established.