Cyst excision

Overview

Cyst excision is a minor surgical procedure to remove a cyst — a closed sac under the skin filled with fluid, air, or other material. The doctor numbs the area, makes a small cut, and takes out the entire cyst lining to prevent it from coming back.

Yes, cyst excision is a very common minor surgical procedure performed in GP surgeries, dermatology clinics, and hospital outpatient departments.

Cysts can affect people of any age, but skin cysts (like epidermoid or pilar cysts) are more common in adults. Some types, such as dermoid cysts, may appear in children.

Symptoms

Common symptoms

• A visible lump or bump under the skin that feels firm or soft
• The lump may be painless or cause discomfort if it presses on a nerve
• Redness, swelling, or tenderness if the cyst becomes inflamed or infected
• A small opening (punctum) on the skin surface that may release a cheesy or foul-smelling discharge

Symptoms in children

• Cysts in children often appear on the scalp, face, or neck
• They may be present at birth (congenital) or develop later
• A child may complain of a painless lump that slowly grows

Symptoms in older adults

• Older adults are more likely to develop sebaceous cysts on the trunk or scalp
• The cyst may become more noticeable due to thinning skin
• Increased risk of irritation from clothing or friction

Causes

Main causes

• Clogged oil glands (sebaceous glands) that cause fluid to build up
• Ingrown hair follicles that form a sac
• Inherited conditions such as Gardner syndrome or nevoid basal cell carcinoma syndrome
• Injury to the skin that traps cells under the surface

Risk factors

• Having a family history of cysts
• Acne or other skin conditions that block pores
• Being over 40 years old (for certain types of cysts)
• Working in dirty or greasy environments that clog pores

When to see a doctor

See a doctor urgently if:

• The cyst is painful, red, or draining pus
• You have a fever and a skin cyst
• The cyst grows quickly over a few weeks

Book a routine appointment if:

• You have a lump that does not cause symptoms but you want it checked
• The cyst has been present for a long time and you are concerned about its appearance
• You have had a cyst removed before and it has come back

Diagnosis

A healthcare provider will examine the lump and feel its texture, size, and whether it moves. They will ask about your symptoms and medical history. In most cases, the diagnosis can be made by looking and touching.

Tests that may be done

• Sometimes an ultrasound scan is done to see if the lump is solid or fluid-filled.
• A small sample of fluid or tissue (biopsy) might be taken if there is any doubt about the diagnosis.
• Rarely, a CT or MRI scan is needed for very deep or complex cysts.

What to expect at your appointment

The doctor will explain what the cyst looks like and whether it needs removal. If excision is recommended, they will give you information about the procedure, recovery, and possible risks. You will have an opportunity to ask questions before going ahead.

Treatment

Treatment for a cyst depends on whether it causes symptoms. If it is not causing any problems, no treatment is needed. If the cyst becomes infected, your doctor may first treat the infection with a short course of antibiotics (cream or tablets). Once the infection clears, the cyst can be surgically excised if desired. Cyst excision is the only way to permanently remove a cyst.

Self-care at home

• Keep the area clean and avoid squeezing or picking the cyst, which can cause infection.
• Apply a warm compress to an inflamed cyst to help it drain naturally (but this is not a cure).
• Over-the-counter pain relief such as paracetamol or ibuprofen can ease discomfort — ask your pharmacist for advice.

Medical treatments

If a cyst is infected, your doctor may prescribe an antibiotic cream or oral antibiotics to control the infection before surgery. Corticosteroid injections are sometimes used to reduce inflammation, but they do not remove the cyst permanently.

When is surgery considered?

Cyst excision is usually recommended if the cyst is painful, infected, growing, or bothering you cosmetically. It is also advised if there is any concern that the lump might be something more serious. The procedure is done under local anaesthetic in a clinic or minor surgery unit.

Living with this condition

After cyst excision, the wound will need a few days to heal. You should keep the area dry and clean, and follow the doctor's instructions about changing the dressing. Most people can return to normal activities within a day or two, but heavy lifting or strenuous exercise should be avoided for about a week.

Lifestyle tips

• If you have a cyst, treat it gently and avoid rubbing or irritating it with tight clothing.
• Good skin hygiene, such as regular washing with mild soap, may help prevent new cysts.
• If you have a tendency to develop cysts, check your skin regularly for any changes.

Diet and exercise

No specific diet is needed for cysts, but a healthy diet supports skin health and healing after surgery. Moderate exercise is fine unless your doctor advises otherwise. After excision, listen to your body and avoid activities that pull on the wound.

Mental health and emotional wellbeing

Cysts can sometimes cause worry about appearance or the possibility of a serious condition. It is normal to feel anxious. Talking to your healthcare provider about your concerns can help. After successful excision, most people feel relieved and satisfied with the result.

Prevention

Many cysts cannot be prevented, especially those that run in families. Avoiding skin trauma and keeping skin clean can reduce the risk of some types. Not picking or squeezing pimples may also help prevent cyst formation.

Complications

If left untreated

• Infection: the cyst may become painful, red, and filled with pus.
• Rupture: the cyst can burst under the skin, causing more inflammation and scarring.
• Rarely, a non-cancerous cyst can grow very large and press on nearby structures.
• Very rarely, a cyst may be a sign of an underlying skin cancer — that is why any changing lump should be checked.

Long-term outlook

The outlook for cyst excision is excellent. Most people have no further problems after the cyst is removed completely. The scar will fade over time. If the cyst is infected at the time of surgery, there is a slightly higher chance of it coming back, but overall the procedure is very successful.

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