胆嚢異所性胃粘膜の1例

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  • A CASE OF HETEROTOPIC GASTRIC MUCOSA IN THE GALLBLADDER

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We report a case of heterotopic gastric mucosa of the gallbladder in a 26-year-old man. The patient was seen at another hospital because of uppr abdominal and right bach pain, and was referred to the hospital with a diagnosis of cholelithiasis. In preoperative DIC, gall bladder and cystic duct were not visualized. Helical CT revealed a filling defect in the neck of the gallbladder. Abdominal US revealed wall thickness and irregularity of the mucosa in the neck of the gallbladder that was too difficult to be differentiated from early gallbladder cancer. Then, laparoscopic cholecystectomy was performed, and the elevated lesion in the neck of the gall bladder was diagnosed as hyperplastic polyp by intraoperative frozen examination, but by postoperative permanent pathologic veiw, that was diagnosed as heterotopic gastric mucosa.<br> Heterotopic gastric mucosa is very rare. In a review of the literature, there are 34 cases of heterotopic gastric mucosa in the gallbladder. Our case which had the elevated lesion of heterotopic gastric mucosa in the gallbladder presented difficulty in differential diagnosis from early gallbladder cancer.

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