Superficial Myofibroblastoma of the Vulva in an Adolescent; A Case Report

Background: Superficial myofibroblastoma (SMF) of the lower genital tract is a rare benign mesenchymal tumour first reported in English Literature in 2001 as “superficial cervicovaginal myofibroblastoma” It was formerly believed to occur exclusively in the cervix and the vagina but the name “superficial myofibroblastoma of the lower genital tract” was proposed after it was also described in the vulva. It is more common among the perimenopausal and postmenopausal women. Case Presentation: The index report was a case of a 15-year-old secondary school student who presented in our facility with a painless vulva swelling of about 11 months duration. Examination of the vulva showed a firm non-tender mass at the mucocutaneous junction of the left labia at 2-5 O’clock position, involving the left labial majora. The hymen was intact. She had an excisional biopsy of the mass and histological findings were conclusive of Myofibroblastoma. Discussion: It was the first case to be reported in an adolescent and the first to be reported in Nigerian or African literature. Conclusion: Differential diagnosis abound and there is a need for closer attention to tumours of the lower genital tract to enhance its prompt diagnosis.