In short. How defects after skin cancer removal are repaired: healing by second intention, direct closure, skin grafts, local flaps and the reconstructive ladder applied to the face.
Key points
- A local flap borrows skin next to the defect, moves it with its blood supply intact, and gives the best colour and texture match — which is why it is often the right answer on the nose, cheek and lip.
- A graft is quicker and simpler but looks like a patch.
- A free flap, transferring tissue with microsurgical vessel repair, is occasionally needed for very large defects.
Once a skin cancer has been removed and the margins are clear, what remains is a defect: a hole in the skin of a certain depth, in a certain place, with certain structures beneath it. Deciding how to repair that defect is a separate operation with its own logic, and the guiding rule is the oldest one in reconstructive surgery — use the simplest technique that will work, and climb higher only when the defect demands it.
Knowing what the defect needs
The repair follows the defect, not the surgeon's preferences. Depth matters: a shallow wound that still has a bleeding dermis can support a graft, while one that exposes cartilage, tendon or bone cannot, and needs tissue with its own blood supply. Location matters too, because the eyelid, nose, lip and ear have little spare skin and specialised function, and each is judged as an aesthetic unit rather than as an area to be covered.
The options, from simple to complex
Small superficial wounds on concave surfaces such as the temple may simply be left to heal by second intention, which produces a fine result at the cost of several weeks of dressing. Direct closure brings the wound edges together in layers and gives the best scar when there is enough loose skin nearby. A skin graft takes skin from elsewhere — commonly from behind or above the ear, or from the upper arm — and transfers it without its blood supply; it is reliable but tends to differ in colour and texture from facial skin.
The simplest repair that works
A local flap borrows skin next to the defect, moves it with its blood supply intact, and gives the best colour and texture match — which is why it is often the right answer on the nose, cheek and lip. A graft is quicker and simpler but looks like a patch. A free flap, transferring tissue with microsurgical vessel repair, is occasionally needed for very large defects. The ladder is climbed in order, and stopping lower is a sign of judgement rather than of limited skill.
Timing
Where the margins are already clear, repair is usually immediate, in the same operation. Where a margin-controlled technique is used, there is no harm in waiting a day or two for the pathology, and a temporary dressing protects the wound perfectly well. Waiting for a confirmed clearance is better than reconstructing over a tumour that has not been fully removed.
Scars and the long view
Any repair leaves a scar, and it is permanent. It will be red and firm for weeks, then mature over twelve to eighteen months into something paler and softer. Sun protection, silicone and, at the right time, laser treatment all influence how it settles. For the wider framework behind these choices, see our guides to surgical excision and margin control and to benign skin tumours.
Seek review promptly if
- A graft or flap turns dark, cold or black, or stops bleeding when gently pricked.
- A wound opens, bleeds persistently, or develops spreading redness, warmth or discharge.
- You develop fever, worsening pain, or new numbness or weakness in the repaired area.
Frequently asked questions
What decides which type of repair is used?
The defect, not the surgeon’s preferences. Depth matters, because a wound that exposes cartilage, tendon or bone cannot support a graft and needs tissue with its own blood supply. Location matters too, since the eyelid, nose, lip and ear have little spare skin.
Is it safe to wait for the pathology result before reconstructing?
Yes, where a margin-controlled technique is used. There is no harm in waiting a day or two for the pathology, and a temporary dressing protects the wound perfectly well. Waiting for a confirmed clearance is better than reconstructing over a tumour that has not been fully removed.
How does a repair scar change over time?
Any repair leaves a scar, and it is permanent. It will be red and firm for weeks, then mature over twelve to eighteen months into something paler and softer. Sun protection, silicone and, at the right time, laser treatment all influence how it settles.
Risks & Limitations
- Incomplete excision, which may require a further operation to achieve clear margins.
- Recurrence of the skin cancer, and the need for surveillance for years afterwards.
- Scars are permanent. They mature and fade but never disappear.
- Problems with a graft or flap, including partial or complete loss, which may need further surgery.
- Numbness, altered sensation or nerve injury around the operated area.
- Melanoma carries a risk of spread that surgery cannot remove, even when the excision is complete.
- Pigment change, contour irregularity, or a scar that widens or thickens.
- Final assessment of the scar is made at 6–12 months, and surveillance continues longer.
When to Seek Care
- A lesion that changes in size, shape, colour or height, or that starts to bleed or itch.
- A new, rapidly growing nodule, or a sore that is not healing.
- A mole that becomes painful or bleeds.
- Swelling in a lymph node region — the neck, armpit or groin.
- A graft or flap that turns dark, cold or black, or a wound that opens or discharges.
- Fever above 38 °C, or spreading redness, warmth or pain around a wound.
References & Further Reading
- American Academy of Dermatology (AAD) — skin cancer diagnosis and treatment guidance
- American Cancer Society (ACS) — skin cancer types, staging and outlook
- Skin Cancer Foundation — prevention and skin self-examination resources
- American Society of Plastic Surgeons (ASPS) — reconstruction after skin cancer excision
- Cochrane Library — systematic reviews in skin cancer treatment and prevention
- Chinese Medical Association — clinical guidance for skin tumours and dermatologic surgery
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.