Gastric ulcer healing by cimetidine in non-Hodgkin's lymphoma of the stomach.

A man presented with what appeared clinically and histologically to be a benign gastric ulcer which healed with cimetidine. His condition subsequently deteriorated and a further endoscopy revealed a huge tumour in the body of the stomach with the histological appearances of non-Hodgkin's lymphoma. The presentation of non-Hodgkin's lymphoma in the elderly is discussed, together with the problem of gastriculcer healing by cimetidine in the presence of underlying malignancy.