gallstone
Medical term for a stone formed in the gallbladder or bile duct. Also used in compounds like 胆石症 (cholelithiasis).
胆石が見つかって、手術を受けることになった。
They found a gallstone, and I ended up having surgery.
Gallstones often form when cholesterol hardens.
My father developed a gallstone and had to have surgery.
They performed surgery to remove the gallstone using an endoscope.
A gallstone got stuck in the bile duct, causing severe pain.