A giant penis-like vulval soft fibroma in a case of external genital malformation.

Soft fibroma is a common benign skin tumour. The size varies from 1 to 10 mm, and giant soft fibromas were rare. Mostly, the appearances of soft fibromas were pedicled, filiform and papular. We reported a female adolescent with a giant penis-like soft fibroma in her vulva, meanwhile with an external genital malformation. We recalled our treatment process, including diagnosis and surgery, and aimed to broaden the understanding of soft fibroma through our case report.