Sebaceous cyst

Question 1

define Sebaceous cyst?

Answer 1

Epithelium-lined, keratinous, debris-filled cyst arising from a blocked hair follicle

Question 2

what is the aetiology of a Sebaceous cyst?

Answer 2

• Single hair follicle is blocked

Question 3

presenting signs and symptoms of sebaceous cysts ?

Answer 3

• Non-tender slow-growing skin swelling with a punctum
• Common on the scalp, ears, back, face and upper arm.
• May discharge granular creamy material that smells bad

Question 4

investigations required?

Answer 4

• NONE needed

* Skin biopsy or FNA for differentials