Drug induced longitudinal melanonychia and transverse muerhcke's lines.

We describe the case of a 60 years old woman, who came to our attention in November 2017. She was worried about a "dark line" which had recently developed on the second finger nail of the right hand. The patient had a medical history of infiltrating ductal carcinoma of the breast and she had received in the Spring of 2017 six courses of adjuvant chemotherapy with Docetaxel and Cyclophosphamide, later in October 2017 she had started a hormonal therapy with Letrozole. This article is protected by copyright. All rights reserved.