Kayser-Fleischer ring will be present in what propoion of patients with neurologic manifestations of wilson disease?: (A) Almost 100 %, (B) Less than 10 %, (C) 30-50 %, (D) 20-30 %
Answer is A. Kayser-Fleischer rings diagnosed definitively by an ophthalmologist using a slit lamp. They are present in >99% of patients with neurologic/psychiatric forms of wilson. Kayser-Fleischer rings are present in only 30-50% of patients diagnosed in the hepatic or presymptomatic state of wilson disease. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 3188