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 28-year-old woman presents for her annual physical examination. She describes a painless lump in her left breast detected during breast self-examination two weeks ago. She has no previous history of breast lumps and considers herself to be generally healthy. She takes no medication and does not smoke tobacco or drink alcohol. The patient has no personal or family history of breast cancer. Her vitals are normal. Physical examination reveals a firm, 1 to 2 cm mass in the lateral aspect of her left breast. However, no associated skin changes, nipple discharge, or retraction are found. No axillary adenopathy is present. What is the most appropriate next step in the workup of this patient?
assistant
Perform an ultrasound