In short
An epidermoid or sebaceous cyst arises in the skin and may contain keratin-like material. A lipoma consists of fatty tissue beneath the skin. Most are benign, but rapidly growing, hard, fixed or deep lumps may need investigation before surgery.
Seek prompt assessment if a lump grows rapidly, is hard or fixed, lies deep or causes marked pain.
What happens at the examination
We assess the lump's size, depth, mobility, skin involvement and growth. Atypical findings may require ultrasound, other imaging or referral.
- Distinguishing a cyst from a lipoma
- Assessment of size and depth
- Planning the incision and scar
- Decision on tissue analysis
Treatment options
The most suitable treatment is decided after an individual medical assessment.
After treatment
You receive a dressing and instructions on wound care, activity and suture removal. Tenderness, swelling and bruising are common initially.
Frequently asked questions
Are a cyst and a lipoma the same?
No. A cyst arises in the skin, while a lipoma consists of fatty tissue beneath it.
Can the lump return?
The risk is lower when the whole cyst capsule or lipoma is removed, but recurrence can occur.
Can surgery take place on the same day?
This can sometimes be arranged in advance for smaller, clearly defined lesions.
Medically reviewed by Dr Elias Tsiolis, specialist in general surgery, senior consultantUpdated 2026-10-25This text does not replace an individual assessment.