title: Recurrent midback pain with no apparent cause.
mesh_terms: D001416:Back Pain / Q000209:etiology* / Q000601:surgery; D002763:Cholecystectomy; D005260:Female; D042882:Gallstones / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D011859:Radiography