Abstract

Mohamed Badr Errachid*, Ismail Kebbaj, Reda Lah Bassir, Moncef Boufettal, M. Kharmaz, M. O. Lamrani and M. S. Berrada

ABSTRACT

Epidermoid cysts are rare benign tumors, even rarer in the lower limbs. To our knowledge, we report the 2nd case published in the literature concerning epidermoid cysts located in the popliteal fossa. Epidermoid cysts are almost always taken for Baker's cysts, due to their rarity and clinical presentation wich show a painless mobile mass with a slow progressive evolution motivating the patient to consult when the tumor has reached a large volume. However, ultrasound can already guide the diagnosis before it is confirmed after surgical intervention by histological examination wich found a teratoid epidermoid cyst with hair structures. its nature is benign and its evolution is usually slow and progressive,the mass is generally painless even with pressure. Our clinical case was treated by surgical resection wich was very easy thanks to the thick capsule of the cyst located subcutaneously. The long-term follow-up was satsifactory without degeneration or recurrence.