1st April 2022

A 65-year-old woman presents with a 4-month history of a red, crusty left nipple

A 65-year-old woman presents with a 4-month history of a red, crusty left nipple. It is also extremely itchy and has not improved with emollients. She had eczema as a child but has not had any flares of this for years. On examination, the left nipple appears erythematous and dry, but the right nipple looks normal. There are no other skin changes and no breast lumps noted.

Which is the most appropriate investigation given the possible diagnosis?

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