Punch Biopsy

Description

• A punch biopsy is a simple, in-office procedure used to take a small, full-thickness sample of skin for testing. It allows your provider to evaluate the surface of the skin as well as the deeper layers, making it especially helpful for diagnosing rashes, unusual spots, or lesions that may be cancerous.

  During the procedure, the area is numbed with local anesthetic. A small, circular tool (similar to a tiny cookie cutter) is used to remove a core of skin. Depending on the size, the area may be closed with a stitch or two, or allowed to heal naturally. The sample is then sent to the lab for analysis.

  Healing is usually quick, and most patients resume normal activities the same day. A small scar may remain, but your provider will take steps to minimize scarring and ensure proper healing.

When should I have a punch biopsy? 

A punch biopsy is often recommended when your provider needs to examine the full thickness of the skin — from the surface down through the deeper layers. This makes it especially useful for:

• Suspicious moles or lesions that may be melanoma or another type of skin cancer

• Rashes or inflammatory skin conditions (like psoriasis, eczema, or lupus) that require deeper tissue sampling

• Unclear diagnoses when a shave biopsy might not provide enough information

• Deeper bumps or growths under the skin surface

Unlike a shave biopsy, which removes just the top portion of a spot, a punch biopsy allows for a more complete and detailed look under the microscope — helping your provider make the most accurate diagnosis.