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Review Question - QID 210837

Diabetes Insipidus Introduction QID: 210837 (M1.OMB.18.4818)
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QID 210837 (Type "210837" in App Search)
A 28-year-old woman presents to her primary care physician complaining of intense thirst and frequent urination for the past 2 weeks. She says that she constantly feels the urge to drink water and is also going to the bathroom to urinate frequently throughout the day and multiple times at night. She was most recently hospitalized 1 month prior to presentation following a motor vehicle accident in which she suffered severe impact to her head. The physician obtains laboratory tests, with the results shown below:

Serum:
Na+: 149 mEq/L
Cl-: 103 mEq/L
K+: 3.5 mEq/L
HCO3-: 24 mEq/L
BUN: 20 mg/dL
Glucose: 105 mg/dL
Urine Osm: 250 mOsm/kg

The patient’s condition is most likely caused by inadequate hormone secretion from which of the following locations?
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