An 18-year-old woman without significant past medical history first noticed a non-tender lump in her left breast one month prior. She denied other complaints such as breast pain or nipple discharge. On physical exam, she was well-appearing with a palpable mass in the left breast but no appreciable lymphadenopathy. Targeted ultrasound shows a 5.5 cm. circumscribed, oval mass at the area of palpable concern.
Marta VanStraten, D.O.
Fellow, Anatomic Pathology
Daniel Visscher, M.D.
Consultant, Anatomic Pathology
Professor of Laboratory Medicine and Pathology
Mayo Clinic College of Medicine and Sciences