A first case report of diffuse acneiform eruption caused by capecitabine in a patient with small-cell neuroendocrine lung carcinoma.

Capecitabine is a chemotherapeutic agent which is converted to fluorouracil by thymidine phosphorylase in human body. It is one of the commonly used agents in colorectal and metastatic breast cancers. Hand-foot syndrome is most commonly observed adverse effect of capecitabine; however, it has several adverse cutaneous and mucosal effects. To the best of our knowledge, no case with acneiform eruption has been reported so far. Here, we presented a 54-year-old man with development of capecitabine-related acneiform drug eruption.