Biopsy is a procedure in which a sample of skin tissue or cells is collected and sent to a pathologist for microscopic examination to detect abnormalities. Results are generally available within 7–14 days. A biopsy helps confirm a diagnosis, identify the type of disease, and assess its stage or severity. It is usually recommended when warning signs are present or when initial examination results are inconclusive.
- An unusually enlarged or abnormal lump is found
- A persistent wound or mole shows changes
- Abnormal bleeding, such as blood in the stool
- Unexplained weight loss or persistent fever without a known cause
- An abnormality is detected during a routine health check-up, such as through an X-ray, mammogram, CT scan, or blood test
- A suspicious spot, lump, or other abnormality is found that requires a biopsy for further evaluation and confirmation of the diagnosis
Why Is a Skin Biopsy Recommended?
Doctors may recommend a skin biopsy when an abnormality is found during a physical examination or on imaging studies. A biopsy can help establish an accurate diagnosis and guide the most appropriate treatment.
Distinguish skin cancer from benign moles or skin growths
Diagnose chronic inflammatory skin conditions that are difficult to treat or whose cause remains unclear, such as psoriasis or lupus
Detect autoimmune skin diseases and blistering disorders
Identify infections in the deeper layers of the skin, including bacterial, fungal, or cutaneous tuberculosis infections
Provide a definitive diagnosis to help doctors select the most appropriate medication and treatment approach
Skin Biopsy Process at Thantharee Clinic
Consultation with the Doctor
Listen to the details, side effects, and preparation.
Biopsy Surgery
Minor surgery: Surgical Biopsy, Punch Biopsy
Tissue Collection for Examination
Placed in a tightly sealed container to prevent damage to the tissue sample.
Laboratory Examination
Microscopic examination and scanning to identify the type and severity.
Suture Removal
Wound examination and suture removal 7–14 days after surgery.
Results and Treatment Planning
The doctor provides the test results to begin treatment planning immediately.
Skin lesions suspicious for "skin cancer"
- High accuracy It is the most definitive method for obtaining an accurate diagnosis, unlike visual examination, which may lead to misdiagnosis.
- Helps determine the right treatment Helps distinguish between cancer, benign tumors, infections, or autoimmune diseases, allowing medication or surgery to target the condition appropriately without wasting time and expenses on ineffective treatment.
- Determines the severity Clearly identifies the type and stage of the disease, helping doctors develop an appropriate treatment plan.
- Increases the chance of complete recovery Helps detect serious diseases (such as cancer) at an early stage, when the chances of successful treatment are higher.
- Enables clear follow-up Helps confirm whether previous treatment has been effective and whether the disease has returned.
Why Is a Biopsy the Most Accurate Method?
- It is the only method that directly examines the characteristics of cells, allowing confirmation of whether cancer is present, while also identifying the type and assessing the severity of the disease as clearly as possible for treatment planning.
Other Tests Used in Combination (to Help Locate and Monitor the Disease)
- Blood Test: Checks for tumor markers (Tumor Markers). Used for initial assessment but cannot confirm the disease.
- Imaging (X-ray, CT, MRI, Ultrasound): Helps identify the size and location of a mass and is suitable for examining deep organs (such as the pancreas), but cannot determine whether the mass is malignant.
- PET Scan & Endoscopy: Helps assess the spread of the disease and the characteristics of a mass, but is not a definitive 100% diagnostic method.
In-Depth Cellular and Genetic Testing (Using the Biopsy Sample)
- Immunohistochemistry (IHC): Uses antibodies to detect specific proteins and identify specific types of cancer (e.g., HER2 testing in breast cancer)
- Molecular/Genetic Testing (PCR & Gene Testing): Analyzes DNA and gene mutations (e.g., EGFR testing in lung cancer) to help select targeted therapy appropriately.
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