A case of gastrolithiasis produced by a 5-day diet.

A 55-year-old man with a history of distal gastrectomy was admitted to our hospital due to gastrointestinal bleeding from an anastomotic ulcer. After endoscopic hemostasis, his oral intake resumed after 1 day of fasting; however, he could not ingest food because of early satiety and nausea on the fifth day of oral intake resumption. Esophagogastroduodenoscopy was performed again to investigate the cause of anorexia and revealed a massive gastrolithiasis that was not observed in the previous esophagogastroduodenoscopy, which was diagnosed as the cause of his anorexia. Gastrolithiasis was treated with endoscopic removal the day after diagnosis, and the patient was discharged from the hospital after his symptoms resolved. Herein, we report the case of a patient with gastrolithiasis that developed and proliferated within 5 days.