A 44-year-old man with a background of metastatic colorectal cancer presented with haematemesis. An oesophago-gastroduodenoscopy was performed and revealed five focally haemorrhagic grey mucosal lesions in the body and fundus regions of the stomach between 5 mm and 4 mm in diameter. The biopsies of the gastric mucosal lesions showed invasive poorly differentiated adenocarcinoma in which signet ring cells were a prominent component, thus related to the primary cancer. The background mucosa showed no dysplasia.
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Competing interests: none.
Patient consent: Patient/guardian consent was obtained for publication