system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 23-year-old man comes to the physician because of lightening of his skin on both hands, under his eyes, and on his neck for 2 years. During this period the lesions slowly grew in size. There is no itchiness or pain. He regularly visits his family in India. Vital signs are within normal limits. Examination shows sharply demarcated, depigmented skin patches on the dorsum of both hands, in the periocular region, and on the neck. Sensation of the skin is intact. The lesions fluorescence blue-white under Wood's lamp. Which of the following findings is most likely to be associated with this patient's diagnosis?
assistant
Elevated anti-TPO antibody levels