Epidermoid cyst


Epidermal cyst; epidermal inclusion cyst; wen; atheroma; steatoma; sebaceous cyst


Cyst with a stratified squamous lining, which produces keratin

Clinical manifestation

Polymorphic, verrucous or flat-topped papules resembling flat warts; macules and reddish-brown plaques with slightly scaly surfaces and irregular borders; localized mostly on sun-exposed regions, palms, soles, in the axillae, and on external genitalia; mucous membranes rarely affected; malignant tumors typically appears during the fourth and fifth decades of life

Differential diagnosis

Verruca plana; squamous cell carcinoma; tinea versicolor; trichoepithelioma; basal cell carcinoma; papular mucinosis; solar elastosis


Derived from follicular infundibulum; often occurring at site of previous trauma (inflammatory acne, etc.)

Clinical manifestation

White or pale yellow, deep dermal or subcutaneous, medium-firm papule or nodule, often with a central pore; cheesy, foul-smelling material sometimes exuded with lateral pressure

Differential diagnosis

Lipoma; trichilemmoma; steatocystoma multiplex; granuloma annulare; sarcoido-sis; lymphocytic infiltrates; insect bite reaction; acquired perforating disease; metastasis

212 Epidermolysis bullosa


Simple excision by sharp dissection*; elliptical excision; marsupialization of large lesions; inflamed lesion: incision and drainage of purulent material; triamcinolone (35 mg per ml) injected intralesionally


Pariser RJ (1998) Benign neoplasms of the skin. Medical Clinics of North America 82(6)11285-1307

Mole Removal

Mole Removal

Moles, warts, and other unsightly irregularities of the skin can be bothersome and even embarrassing. They can be removed naturally... Removing Warts and Moles Naturally! If you have moles, warts, and other skin irregularities that you cannot cover up affecting the way you look, you can have them removed. Doctors can be extremely expensive. Learn the natural ways you can remove these irregularities in the comfort of your own home.

Get My Free Ebook

Post a comment