[LorenPechtel]

It is perfectly reasonable for the doctor to have "a gallbladder" to deal with--there are few failure modes and a standardized response to them. In specialized fields you will find professionals describe situations in terms of a baseline and any deviations from said baseline--just about completely unintelligible to anyone who doesn't know those baselines. To describe a patient as "a gallbladder" is saying it's a standard presentation of the problem. And doctors are not supposed to identify patients if not necessary.