Biopsy

Biopsy

A biopsy is a medical procedure during which a small sample of tissue or cells is taken from the body for examination. This sample is later analyzed under a microscope by a pathologist in order to determine the nature of a disease, diagnose certain conditions, or assess disease progression.

Purpose and Importance

The main purpose of a biopsy is to obtain an accurate diagnosis, especially when oncological diseases, inflammatory conditions, or other tissue pathologies are suspected. Although other diagnostic methods, such as imaging (X-ray, ultrasound, MRI), can reveal abnormalities, a biopsy is the only way to obtain a tissue sample and examine it at the cellular level.

This allows the pathologist to determine whether cancer cells are present, what type of cancer it is, its level of aggressiveness, and other important characteristics that are essential for selecting the most appropriate treatment plan. Biopsy is also used to diagnose infectious diseases, autoimmune disorders, and other conditions when detailed tissue analysis is required.

Preparation for the Procedure

Preparation for a biopsy depends on the type of biopsy and the part of the body from which the sample will be taken. It may be necessary to stop taking certain medications, such as blood thinners, before the procedure. You may also be asked not to eat or drink for a certain period of time.

Before the procedure, the doctor will explain all specific instructions and answer any questions.

Types of Biopsy and Procedure

There are many different types of biopsies, depending on the body part and the technique used:

Needle biopsy:
One of the most common biopsy types. A thin needle is inserted into a suspicious area to collect cells or tissue. This method is often used for breast, thyroid, liver, or kidney biopsies. It may be performed under ultrasound, computed tomography (CT), or magnetic resonance imaging (MRI) guidance to ensure accuracy.

• Fine-needle aspiration biopsy (FNA): Cells are collected rather than a piece of tissue.
• Core needle biopsy: A small cylinder (core) of tissue is removed.

Surgical biopsy:

• Incisional biopsy: Only a portion of the suspicious lesion is removed.
• Excisional biopsy: The entire lesion is removed along with a small margin of surrounding healthy tissue. This method is often used for skin lesions or small tumors.

Endoscopic biopsy:
Performed during endoscopy, when a flexible tube with a camera is inserted into the digestive tract, respiratory tract, or bladder. Special instruments are used through the endoscope to collect tissue samples.

Bone marrow biopsy:
A sample is taken from the bone marrow, usually from the pelvic bone, to diagnose blood disorders such as leukemia or lymphoma.

Skin biopsy:
A sample of skin is taken to diagnose skin diseases, including skin cancer.

Most biopsies are performed using local anesthesia, so discomfort during the procedure is minimal. After the procedure, mild pain, swelling, or bruising may occur at the biopsy site.

Sample Analysis

The collected tissue sample is sent to a pathology laboratory. The pathologist prepares the sample, stains it, and examines it under a microscope. The pathologist looks for cellular changes that may indicate disease and prepares a detailed report with the diagnosis.

This report is essential for the physician when planning further treatment.

A biopsy is an important diagnostic tool that provides precise information about tissue condition and helps in making informed treatment decisions.