A 63 Year Old Woman Consulted Her GP Because of a Rash

A 63 year old woman consulted her GP because of a rash on her left nipple.It had been weeping clear fluid for some weeks,and was reddened.A biopsy was done,and a representative section is shown in the accompanying photomicrograph.Which one of the following conclusions is warranted?

A) Application of a hydrocortisone cream is indicated
B) She has an underlying breast carcinoma
C) She needs to apply sunscreen while sunbathing to avoid such basal cell carcinomas
D) The lesion should heal on its own
E) The patient is pregnant