- Bin Peng, attending physician,
- Songmei Geng, chief physician
- Department of Dermatology, Xi’an Jiaotong University Second Affiliated Hospital, China
- Correspondence to: S Geng gengsongmei73{at}163.com
This woman in her late teens presented to the dermatology department with a one month history of a pea sized nodule on her chin. The lesion was characterised by superficial ulceration, surrounding skin depression (figure), and no associated pain or itching. She reported no history of trauma or medical history, and took …
