A patient with small-cell carcinoma of the stomach with long survival after percutaneous microwave coagulating therapy (PMCT) for liver metastasis.

A 66-year-old man was admitted to our hospital with epigastralgia. Preoperative examinations revealed an 8.0 x 8.0-cm, Borrmann type 2 tumor in the posterior wall of the cardia, without distant metastases. Total gastrectomy with pancreato-splenectomy and regional lymph node dissection was performed curatively. Histologically, the tumor was composed mainly of small cells with hyperchromatic nuclei and scant cytoplasm, which showed positive staining for Grimelius, gamma-neuron-specific enolase (gamma-NSE), chromogranin A, and serotonin. About 10 months after the operation, a solitary tumor was revealed in S8 of the liver by abdominal computed tomography (CT), and it was histologically confirmed by needle biopsy to be a metastasis of the small-cell carcinoma from the stomach. Instead of hepatectomy, percutaneous microwave coagulating therapy (PMCT) was indicated, because of the patients' liver dysfunction (ICG R15, 39.9%); CT showed complete necrosis of the metastatic focus in the liver after the PMCT. Now, 33 months after the first detection of the liver metastasis (43 months after the gastrectomy), the patient is still alive without any growth of the liver metastasis. The 67 previously reported cases of small-cell carcinoma of the stomach in Japan, including ours, are also reviewed.