Lipoma/Cyst Excision

Lipoma/cyst excision is a minor surgical procedure in which a doctor cuts out a lipoma (a soft, benign lump made of fat cells) or a cyst (a closed sac beneath the skin filled with fluid, semi-solid material, or dead skin cells) and removes it completely from the body.

A lipoma grows slowly inside a thin capsule just under the skin and is almost always harmless, but it can press on nearby nerves or become bothersome in size or appearance. A cyst forms when a small pocket develops under the skin and fills with material that the body cannot drain on its own. During excision, the surgeon opens the skin directly over the lump, carefully separates the lump — along with its entire capsule — from the surrounding tissue, and closes the skin with stitches. Removing the whole capsule is the key step, because leaving any part behind is what causes the lump to grow back.

Doctors recommend lipoma or cyst excision when a lump is causing symptoms, growing noticeably, or needs to be examined under a microscope (a biopsy) to rule out anything serious. The most common reasons for removal include:

• A lipoma that is painful, tender, or pressing on a nerve
• A lipoma that has grown large enough to limit movement or cause discomfort
• A sebaceous cyst (a cyst that forms around a blocked skin gland) or epidermoid cyst (a cyst lined with skin cells) that has become inflamed, infected, or ruptured
• A pilar cyst (a cyst that forms from hair follicle cells, usually on the scalp) causing pain or recurrent infection
• Any lump that has changed shape, hardened, or grown rapidly and needs tissue analysis to confirm it is benign (non-cancerous)
• A lump the patient finds cosmetically troubling or psychologically distressing

Excision is usually not recommended in certain situations. Your doctor will assess whether these apply to you:

• A cyst that is currently actively infected — the infection is typically treated with antibiotics first, and excision is done after it has settled
• Multiple lipomas spread across the body that are all small, painless, and not changing — these are often monitored rather than removed
• Patients with bleeding disorders or medical conditions that make surgery high-risk — your doctor will weigh the risks carefully
• A lump located very close to major blood vessels or nerves in a difficult anatomical site — a specialist or different approach may be needed

Lipoma and cyst excision is a routine, low-risk procedure performed under local anaesthetic (numbing medicine injected into the skin), but, like any surgery, it carries some possible complications:

• Scarring — a permanent mark at the incision site is expected; the size depends on how large the lump was
• Bruising and swelling around the wound in the first few days
• Wound infection — redness, warmth, pus, or increasing pain that may need antibiotics
• Haematoma (a pool of blood that collects under the skin), which may need to be drained
• Seroma (a pocket of clear fluid that builds up under the wound), which may also need draining
• Recurrence — the lump growing back, most often when the capsule was not completely removed
• Temporary numbness or altered sensation near the wound if a small skin nerve was disturbed
• Rarely, damage to a deeper structure such as a muscle, blood vessel, or nerve — more likely if the lipoma or cyst was large or in a deep location
• Reaction to the local anaesthetic, though serious allergic reactions are uncommon

Because this procedure is usually done under local anaesthetic on an outpatient basis (meaning you go home the same day), the preparation is simpler than for major surgery. Your surgical team will give you specific instructions, but the following is what is typically expected.

Before the procedure, your doctor will usually ask about your current medications. Blood thinners — medicines that slow clotting — may need to be paused for several days beforehand, but only if your doctor advises this. Bring a complete list of everything you take, including herbal supplements. Smoking slows wound healing, so patients are generally encouraged to stop or reduce smoking in the weeks leading up to surgery. Fasting is usually not required for a procedure done under local anaesthetic, but follow any specific instructions given by your clinic.

Tests that are commonly arranged beforehand may include:

• A physical examination of the lump — its size, location, depth, and consistency
• An ultrasound (USG) to confirm whether the lump is a lipoma or cyst and to map its exact depth and relationship to nerves or blood vessels
• Occasionally an MRI if the lump is large, deep, or in a complex area
• Basic blood tests, including a clotting screen (a test that checks how well your blood clots), if the surgeon considers it necessary

On the day of the procedure, the usual steps are:

• 1. You arrive at the clinic or day-surgery unit and the nurse confirms your identity and medical history.
• 2. The skin over the lump is cleaned with an antiseptic (a germ-killing solution).
• 3. Local anaesthetic is injected into and around the lump. This causes a brief stinging sensation and then numbness within a few minutes.
• 4. The surgeon makes a single incision (cut) directly over the lump.
• 5. The lump, together with its entire capsule, is carefully dissected (separated) from the surrounding tissue and lifted out.
• 6. The surgeon checks that no capsule remnants remain and that there is no active bleeding.
• 7. The wound is closed in layers with dissolvable or non-dissolvable stitches, depending on the depth and location.
• 8. A sterile dressing is applied over the wound.
• 9. The removed tissue is usually sent to a pathology laboratory (a lab that studies tissue) for examination to confirm its nature.
• 10. You rest briefly in the recovery area before being discharged home, usually on the same day.

Most people recover quickly after lipoma or cyst excision and return to light daily activities within a day or two, though full healing of the skin and deeper tissue takes several weeks. Your surgical team will give you personalised guidance, but the following points reflect what is generally advised.

• Keep the wound dry for the first 24 to 48 hours, or as long as your nurse instructs; after that, gentle washing with clean water is usually fine
• Change the dressing as often as instructed — usually every one to two days — and watch for signs of infection: increasing redness, warmth, swelling, pus, or a fever
• Avoid heavy lifting, strenuous exercise, or stretching the wound site until the skin has healed; your doctor will advise when it is safe to resume
• Non-dissolvable stitches are usually removed in a clinic appointment within one to two weeks; dissolvable stitches absorb on their own over several weeks
• A follow-up appointment is typically arranged to check the wound and to discuss the pathology result (the laboratory report on the removed tissue)
• Expect some degree of permanent scarring; scar creams or silicone strips are sometimes used after the wound has fully closed, but their use should be guided by your doctor
• If the lump was removed for cosmetic reasons and a scar is a concern, ask your surgeon about scar management options at your follow-up visit
• Report to your doctor promptly if the lump appears to be growing back in the same location, as early re-excision is generally more straightforward than a delayed one