24th May 2025

A 20-year-old female presents to her GP, complaining of a 1-week history of right breast tenderness and nipple discharge.

A 20-year-old female presents to her GP, complaining of a 1-week history of right breast tenderness and nipple discharge. Upon questioning, she describes the discharge as being “cheesy” in consistency, but denies seeing any blood. She takes Sertraline for depression and is a known smoker. A home pregnancy test was negative. On examination, the left nipple is retracted and the surrounding skin appears erythematous and hot to touch. What is the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.