Actinic keratosis arising in an epidermal cyst

Sunlight (actinic) keratosis: an update.

L. FELLER, R.A.G. KHAMMISSA, N.H. WooD, Y. JADWAT, R. MEYERoV, J. LEMMER Department of Periodontology and oral Medicine, School of Dentistry, Faculty of Health Sciences, University of Limpopo, Medunsa Campus, South Africa; * School of Dentistry, Faculty of Health Sciences, University of Limpopo, Medunsa Campus, South Africa Professor Emeritus: University of Witwatersrand, Johannesburg, Universi...

Squamous cell carcinoma arising in an epidermal inclusion cyst.

An epidermal inclusion cyst is a widespread benign intradermal lesion and may occur anywhere in the body. Normally, it appears as a non-tender, soft mass of variable size. Dissection usually reveals grayish-white or whitish gelatinous materials and a smooth inner surface. The overlying skin almost always shows unremarkable changes. On occasion, the cyst may rupture and induce an inflammatory re...

Sebaceous carcinoma with actinic keratosis.

Squamous Cell Carcinoma Arising from an Epidermal Inclusion Cyst

CONTEXT Cutaneous epidermal cysts are common lesions, but fortunately, malignant transformation of their epithelium is rare. There are few case reports in the literature concerning malignant transformation of an epidermal cyst into squamous cell carcinoma. We present a case of squamous cell carcinoma arising from an epidermal inclusion cyst and describe the clinical and histopathologic findings...

Basal Cell Carcinoma Arising from an Epidermal Cyst: When a Cyst Is Not a Cyst

Malignant degeneration within epidermal cysts is very rare. However, these lesions may not be recognised clinically, and histological examination plays an important role in arriving at a correct diagnosis. Hence, we believe that benign-looking cystic lesions with a history of progressive growth should be surgically excised and submitted for histopathological assessment.