Multiple choice questions for medical students and foreign medical graduates who are studying for USMLE Step 2 CK
Saturday, September 16, 2017
Repeated USMLE Questions Step 2 CK- 317
A 19-year-old man presents to the clinic with a complaint of tremors and incoordination. Serum transaminases are slightly elevated. Slit lamp examination shows brownish corneal deposits.
What is the element directly involved in this condition?
A-Arsenic
B-Lead
C-Copper
D-Iron
E-Zinc
Answer:
This is a presentation of Wilson's disease in which cellular copper transport is disturbed resulting in copper deposition on tissues. Deposition of copper on the cornea leads to Kayser-Fleischer ring which is described in this patient.
The correct answer is C
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