Kernbiopt

Kernbiopt is a term used in some languages to denote a core needle biopsy, a minimally invasive diagnostic procedure in which a hollow needle is used to extract a small cylinder of tissue from a lesion or organ. The sample preserves tissue architecture, which helps histopathologists distinguish between benign and malignant processes and characterize disease.

The procedure is typically performed on an outpatient basis under local anesthesia, with imaging guidance (ultrasound, CT, or MRI) to target the lesion. A thick needle takes one or more cores, often 1–3, of tissue. The patient may be asked to steady the area; after the sample is obtained, pressure is applied at the puncture site and a bandage is placed. In some cases, a stereotactic or vacuum-assisted technique is used to improve sampling.

Indications include evaluation of suspicious masses (such as breast, thyroid, or liver nodules), staging and planning of cancer therapy, or diagnosis of inflammatory or infectious lesions. The procedure provides tissue for histologic examination and may require ancillary tests such as immunohistochemistry or molecular studies.

Advantages include higher diagnostic yield than fine-needle aspiration for many conditions, preservation of tissue architecture, and suitability for molecular testing. Limitations include sampling error, inability to sample certain lesions, and risks of bleeding, infection, or vascular injury. Rare complications include pneumothorax when biopsying lung lesions.

Kernbiopt is commonly used for breast lesions and thyroid nodules, but is also applied to liver, kidney, bone, and other organs depending on local expertise.

See also: biopsy, fine-needle aspiration, incisional biopsy, excisional biopsy.