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A 31-year-old male with cirrhosis, dementia, and Parkinson-like symptoms is diagnosed with a hereditary metabolic disease resulting from the accumulation of a certain metal in various tissues. Impairment of which of the following elimination pathways is most likely responsible?
Secretion into bile
Loop of Henle secretion into lumen of kidney
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A 14-year-old Caucasian male patient found to have low serum copper, high urine copper, and low serum ceruloplasmin is placed on penicillamine for management of his genetic disorder. Which of the following is LEAST consistent with this patient's clinical picture?
Kinky, easily breakable hair
A 15-year-old Caucasian female presents with Parkinson-like symptoms. Serum analysis shows increased levels of free copper and elevated liver enzymes. What test would prove most helpful in diagnosing the patient's underlying disease?
Serum detection of anti-myelin antibodies
Slit lamp examination
Vitamin B12 test