Skin Adnexal (Appendage) Tumours

The cutaneous appendages give rise to a wide range of tumours. This rare group of tumours is characterised by variable degrees of differentiation toward one or more skin appendages (Sweat gland- eccrine; apocrine; apoeccrine ; Sebaceous glands and Hair follicle). Various classifications have been proposed in the past. In view of the new histochemical & ultrastructural findings and reporting of new adnexal tumours these classifications have been modified by various authors.

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Ectopic Sebaceous Glands:

Fordyce's spot

Hamartomas and Hyperplasias:

Folliculosebaceous Cystic Hamartoma

Steatocystoma

Nevus Sebaceous of Jadassohn

Sebaceous Hyperplasia

Benign:

Sebaceous Adenoma

Sebaceoma

Malignant:

Sebaceous Carcinoma

Tumours with focal sebaceous differentiation:

Basal cell carcinoma (the term "basal cell carcinoma with sebaceous differentiation" should be used only for an otherwise conventional basal cell carcinoma with histological evidence of sebaceous differentiation) ; Squamous cell carcinoma ; Seborrheic keratosis.

Visit:Adnexal Tumours of the eyelid

External Site: Images of normal skin adnexal structures : click

Normal skin appendages : click

Blue Histology: click

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