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
An otherwise healthy 28-year-old woman comes to the physician because of a 14-day history of a painful red nodules on her legs associated with malaise and mild joint pains. She reports that the nodules were initially smaller and distinct but some have fused together over the past 3–4 days and now appear like bruises. There is no preceding history of fever, trauma, or insect bites. Her vital signs are within normal limits. A photograph of the tender lesions on her shins is shown. The remainder of the examination shows no abnormalities. Complete blood count and antistreptolysin O (ASO) titers are within the reference range. Erythrocyte sedimentation rate is 30 mm/h. Which of the following is the most appropriate next step in management ?
assistant
X-ray of the chest