Herniation and torsion of the gallbladder through the foramen of Winslow is a rare condition, and there have been no reports on the development of obstructive jaundice as a complication. We present here the case of obstructive jaundice caused by such a condition. The subject was a 97-year-old female who was hospitalized with the chief complaints of epigastric pain and jaundice. The bulbar conjunctiva and skin were yellowish, and jaundice and inflammation were confirmed through a blood test. She was diagnosed as having torsion of a floating gallbladder by abdominal ultrasonography and CT, and herniation of the gallbladder into the foramen of Winslow was suspected. When emergency surgery was performed, the above conditions were confirmed, and jaundice was shown to be caused by external compression of the common bile duct from the dorsal side by the gallbladder. Her postoperative recovery was uneventful, and she was discharged on hospital day 23. At present, about 24 months after the operation, the patient remains in good health and is followed-up as an outpatient. To the best of our knowledge, this is the first report of obstructive jaundice due to herniation and torsion of the floating gallbladder through the foramen of Winslow.
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