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 sexually active 37-year-old man comes to the physician because of a 7-day history of itching in the area of his genitals. He also reports burning on micturition. He has type 2 diabetes mellitus, which is well controlled with oral metformin. Pelvic examination shows tender, atrophic white papules on the glans and prepuce, with erythema of the surrounding skin. The urinary meatus is narrowed and sclerotic. Which of the following is the most appropriate next step in diagnosis?
assistant
Biopsy of the lesion