Thoir iomradh air an earrann gu h-ìosal agus an uairsin freagair a 'cheist às deidh sin anns an aon chànan ris an earrann:  Passage: Faodar clachan gall cholesterol a leaghadh uaireannan le searbhag ursodeoxycholic air a ghabhail le beul, ach dh'fhaodadh gum bi e riatanach don neach a bhith a' gabhail an cungaidh-leigheis seo fad bhliadhnaichean. Ach, faodaidh clachan gall ath-thòiseachadh aon uair's gu bheil an druga air a stad. Aig amannan faodar casg air an t-seachad bile cumanta le clachan bile a thoirt seachad le sphincterotomy endoscopic retrograde (ERS) às deidh cholangiopancreatography endoscopic retrograde (ERCP).  Ceist: Dè an aon leigheas a dh'fhaodar a dhèanamh airson clachan gall?
sfincterotomy endoscopic retrograde