Skin cancer biopsy: procedure, results, and aftercare

The sampling method depends on the area's size, depth, position, and appearance. Local anaesthetic is often used, and some wounds need stitches while others heal beneath a dressing.

The report can name the skin condition, identify a cancer type when present, and describe features that influence the next step. If the entire visible area was removed, the report may also comment on whether abnormal cells reach a sampled edge.

A positive edge does not describe cancer elsewhere in the body. It means abnormal cells extend to an edge of that specimen, so the clinician considers whether more local tissue should be removed.

Tell the clinician about allergies, medicines, bleeding problems, implanted devices, and previous reactions to local anaesthetic. Do not change medicines on your own; ask for specific instructions if you take a medicine that affects clotting.

Keep the wound clean and covered as directed. If stitches were placed, confirm when and where they should be removed. Limit stretching, swimming, or strenuous activity if these could pull the wound open, and protect the healing site from rubbing.

Call the clinic for redness that keeps spreading, warmth, pus, fever, worsening pain, wound separation, or swelling that is increasing rather than settling.

Apply the pressure method provided by your clinician if the site bleeds. Obtain urgent care when bleeding continues despite that pressure, or if you develop breathing difficulty, facial swelling, faintness, or another severe reaction.

Ask which biopsy technique is suitable, whether the whole visible area will be removed, how to manage the dressing, when to expect the report, and whom to contact for results. If cancer is found, request a plain-language explanation of the type, specimen edges, further tests, and treatment options.