[Coexistence of multifocal gastric adenocarcinoma with signet-ring cell morphology and a gastrointestinal stromal tumour in a stomach with hp-associated gastritis].

A 79-year-old man was admitted because of anemia during marcumar therapy with suspected bleeding in the gastrointestinal tract. Endoscopy revealed a large mutifocal poorly differentiated gastric signet ring cell adenocarcinoma. After staging by the usual oesophagogastroduodenoscopic method, a total D 2 gastrectomy was performed. In the pathological resection specimen of the stomach, a multifocal poorly differentiated signet ring cell adenocarcinoma, infiltrating the submucosa (so called early cancer of sm-type) and an incidental gastroinstinal stromal tumour, 0.8 cm in diameter, was diagnosed. This is the first case report of the synchronous occurrence of a multifocal poorly differentiated gastric adenocarcinoma with signet-ring cell morphology (diffuse type according to the Lauren classification) and a GIST incidentally within a stomach with Hp-associated gastritis.