Epidermal cyst or epidermoid or infundibular or keratin cyst all are the same things, previously known as sebaceous cyst (misnomer) cyst,is benign, congenital lesion of ectodermal in origin and commonest cyst found on the human body. Epidermal cysts may be of the following type: Congenital may be due to the ectodermal inclusion acquired post-surgical like after rhinoplasty, breast augmentation, dermal graft and needle biopsy. ii.Post-traumatic after crush injuries called as implanted epidermoid.
Cysts are result of the proliferation of epithelial cells in circumscribed space of dermis. Clinical presentation: Its presents as few millimeters to 5 cm or more in size, in 3rd to 4th decade of life and more common in men and distributed through out of the body except on palm and sole. It appears as skin colored, firm, round and easily mobile and punctum (keratin plug or comedon) on top of…
