By obtaining a sample of skin tissue, we can achieve a definitive diagnosis, which is essential for effective treatment planning.
A skin biopsy is a critical diagnostic procedure used to evaluate skin lesions, inflammatory conditions, and potential malignancies.
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Skin biopsy is a procedure where a small sample of skin is removed and studied under a microscope. The most common reason for doing a skin biopsy is to achieve an accurate diagnosis of a skin lesion. It is also useful to exclude specific diagnosis, for example skin cancer or malignancy. Not only do skin biopsies provide support for a clinical diagnosis, the removal of the unwanted skin lesion can also improve cosmesis. Sometimes, skin biopsies are itself a treatment modality to remove the entire skin lesion, and may be use to monitor disease progression and also useful in determining treatment response.
Skin biopsies are indicated in various scenarios, including:
The punch biopsy is one of the commonly performed techniques for skin biopsy. The instrument has a hollow and sharp circular piece that allows the removal of deeper skin structures such as the dermis or even fat. The diameter of the punch biopsy sample taken is about 3-8mm. The procedure is performed under local anaesthesia, and the wound is closed with one to two sutures after the procedure. There is low risk of significant scarring, bleeding and infection with this procedure.
The shave biopsy technique is employed for more superficial skin lesions involving the epidermis. The procedure is performed under local anaesthesia where a surgical blade is used to removing the skin lesion. Its a rather fast procedure that has the advantages of not requiring any suturing. Any bleeding is stopped using electrocautery, and the wound is allowed to heal on its own (we call this healing secondary intention). The shave biopsy technique is commonly used for skin viral warts, seborrhoeic keratosis (age spots) and certain moles.
An incisional biopsy is considered when the diagnosis is in doubt, the skin lesion is too large for complete removal, or when non-surgical treatments like radiotherapy are being considered. A portion of the skin lesion is removed for histological diagnosis before planning definitive treatment. An elliptical portion of the skin is removed along the natural skin tension lines. This helps to facilitate healing, and reduces the appearance of scarring. Sutures are placed and removed timely according to the site involved.
As the name suggests, this procedure involves snipping a skin lesion using a pair of surgical scissors. Typically a skin lesion with a narrow base can be removed expediently under local anaesthesia, and the base is cauterised to prevent bleeding. Snip excisions are suitable for skin lesions that are polyp-like. They include skin tags, warts, seborrhoeic keratosis and certain skin cancers.
An excision biopsy procedure can be both considered a therapeutic and diagnostic procedure. The entire skin lesion is removed, typically with an elliptical excision, the wounds are closed and the specimen sent for histological analysis. This is usually reserved for skin lesions or lumps to exclude precancerous and cancerous growths.
While the majority of skin biopsies are performed safely without any significant complications, we have to be aware of what can go wrong on occasion.
TREATMENT | PRICE (SGD) |
---|---|
Punch excision | from 288 |
Shave excision | from 288 |
Excision biopsy | from 350 |
Snip excision | from 288 |
Incisional biopsy | from 350 |
A skin biopsy is an invaluable tool that enhances our diagnostic capabilities and guides treatment decisions. Through careful selection of the biopsy type and thorough pathological evaluation, we can ensure optimal patient care and outcomes.
Dr. Moses Ng is a distinguished professional in the field of aesthetic medicine, renowned for his expertise in advanced cosmetic procedures. With over 15 years of experience, extensive training and a keen eye for detail, Dr. Ng specializes in a wide range of treatments, including injectables, laser therapies, and acne scar management.
Dr. Moses Ng’s commitment to excellence and patient-centric approach have earned him a reputation as a trusted clinician in aesthetic medicine. His continuous pursuit of the latest advancements in the field ensures that his patients receive the highest standard of care and the most effective treatments available.