Biopsy
A biopsy is a medical procedure in which a tissue sample is extracted from the body for pathological examination under a microscope. In mesothelioma diagnosis, biopsy is the only definitive way to confirm the disease, determine the cell type, and distinguish mesothelioma from other cancers.
Imaging studies like X-rays, CT scans, and PET scans can suggest mesothelioma, but only a biopsy can confirm the diagnosis. Several biopsy methods are used depending on the tumor's location: needle biopsies (CT-guided), thoracoscopic biopsies (camera-assisted through small incisions), and open surgical biopsies for larger tissue samples.
The biopsy tissue undergoes immunohistochemistry testing to identify cell markers specific to mesothelioma and determine whether the cells are epithelioid, sarcomatoid, or biphasic. This cell type determination directly impacts treatment decisions and prognosis.
Patients facing a potential mesothelioma diagnosis should ensure their biopsy is reviewed by a pathologist experienced with mesothelioma. Misdiagnosis is not uncommon, as mesothelioma cells can resemble adenocarcinoma and other cancers. A second pathology opinion is recommended. Learn more about the diagnostic process.
- Also known as
- Tissue biopsy, Surgical biopsy
- Category
- Medical
- Related terms
- Immunohistochemistry, Thoracentesis, Epithelioid Mesothelioma, Cancer Staging, Mesothelioma
What types of biopsy are used for mesothelioma?
Methods include CT-guided needle biopsy, thoracoscopic biopsy (camera-assisted through small incisions), and open surgical biopsy for larger tissue samples.
Why is a biopsy necessary for mesothelioma diagnosis?
Imaging alone cannot confirm mesothelioma. A biopsy with immunohistochemistry testing is the only way to definitively confirm the diagnosis and determine the cell type.
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