Lung Biopsy
A lung biopsy is a procedure in which a small sample of lung tissue is taken and examined in detail in a laboratory setting. This method is usually performed to clarify the cause of an abnormal image or mass detected in the lungs. Through biopsy, it can be determined whether a tissue is cancerous, contains an infection, or indicates another disease. The lungs are the essential respiratory organs that facilitate the exchange of oxygen in the body. Therefore, any disorder that may occur here can lead to serious health consequences. Doctors typically prefer lung biopsy when sufficient information cannot be obtained from imaging methods or when a definitive diagnosis of a suspicious finding is required.
What is Lung Biopsy?
A lung biopsy is a procedure in which a small piece of lung tissue is taken and examined under a microscope in a laboratory setting. This method is applied to determine the exact cause of an abnormal structure or disease in the lungs. To fully understand what a nodule, mass, or shadow detected in imaging tests means, it is necessary to look at the structure of the tissue. The sample taken allows for the determination of whether the cells are normal or diseased and, if diseased, what findings they carry.
What are the Symptoms After Lung Biopsy?
Some symptoms after the biopsy procedure are completely natural. These include mild chest pain, a feeling of discomfort while breathing, and sensitivity at the site where the needle was inserted. Additionally, mild cough lasting a few days, blood in the sputum, or fatigue may occur. These usually resolve on their own in a short time. However, if symptoms such as shortness of breath, severe chest pain, or heavy bleeding occur, the doctor should be contacted immediately, as these situations may indicate complications, although rare.
Why is Lung Biopsy Done?
Lung biopsy is generally performed to definitively identify the source of an abnormal condition detected in the lungs. Although some structures may be noticed through modern imaging methods (such as CT, MRI, PET), the exact nature of these structures is often only understood when a tissue sample is taken and examined under a microscope. This is why biopsy is an indispensable step in diagnosis. The most common reason is to clarify whether a nodule or mass detected in the lungs is benign or malignant. Especially in cases where cancer is suspected, a biopsy is essential to understand the type, degree, and spread of the disease before treatment begins. However, the sole purpose of biopsy is not to identify cancer. Some inflammatory diseases, infections such as fungi or tuberculosis can also affect lung tissue, and these conditions may not be distinguishable by imaging tests alone. Additionally, some rare connective tissue diseases or chronic processes such as lung fibrosis can also be diagnosed through biopsy. In short, to obtain accurate and clear information about lung tissue, especially in complex or ambiguous cases, biopsy is often unavoidable. The biopsy result guides doctors regarding both the diagnosis of the disease and which treatment method would be most appropriate. Interventional radiology lung biopsy is performed by directing the needle to the target tissue under imaging guidance.
How is Lung Biopsy Diagnosed?
The decision to perform a needle biopsy of the lung usually comes after a series of careful evaluations and testing processes. This decision is not made randomly; everything starts with the patient’s symptoms. Persistent dry or productive cough, chest pain, blood in the sputum, unexplained weight loss, fatigue, or shortness of breath are the first clues that catch the physician’s attention. These symptoms indicate that there may be an unusual condition in the lungs. However, symptoms alone are not enough. The doctor needs more concrete data to guide the process. At this point, imaging methods come into play.
A chest X-ray is usually the first step; if any shadow, nodule, or deformity is seen here, more detailed examination is initiated. Computed tomography (CT) scans the lung tissue in more detail. PET scans measure the metabolic activity of suspicious areas, helping to locate active and rapidly dividing cells (such as tumor cells). If an unusual formation is detected in the lung as a result of these tests but it cannot be fully understood what it is, then biopsy comes into the picture. Because imaging can show the presence of a mass but cannot distinguish whether it is benign, malignant, inflammatory, or a connective tissue disease. Therefore, tissue is needed to clarify the diagnosis. In some cases, unexplained lung findings that do not improve despite existing treatment may also necessitate a biopsy.
How is Lung Biopsy Performed?
Lung biopsy can be performed using different methods depending on the patient’s overall health status, the location and size of the suspicious area in the lung. The aim of this procedure is to take a small sample directly from lung tissue and subject it to microscopic examination in a laboratory setting. The method to be applied is carefully selected to minimize possible risks and ensure accurate results. Each method has its unique advantages, limitations, and preparation processes. Before the procedure, the patient is thoroughly informed, and necessary consent is obtained. The types of biopsies are as follows:
- Fine or Core Needle Biopsy (Transthoracic Biopsy): Fine needle aspiration biopsy is an effective method used to obtain cell samples from small and deeply located lung lesions. Transthoracic lung biopsy is performed by directly inserting a needle through the chest wall under the guidance of tomography. This method is the most commonly used form of biopsy and is generally preferred for nodules located in the outer regions of the lung. The patient is usually positioned on their back or side. The skin is sterilized, and local anesthesia is applied, meaning the patient is awake but does not feel pain at the biopsy site. Under the guidance of computed tomography (CT) or ultrasound, the doctor directs a fine needle directly to the suspicious area. Once the appropriate area is reached, a small piece of tissue is taken with the needle. Closed lung biopsy encompasses methods applied via bronchoscopy or needle without making a surgical incision. During this procedure, the patient must remain still because reaching the lung tissue requires millimetric calculations. After this usually short procedure, the patient is kept under observation for a few hours.
- Bronchoscopy Biopsy: Transbronchial lung biopsy allows for tissue to be taken from the lower segments of the bronchial tree using bronchoscopy. The bronchoscopy method is the most suitable for lesions close to the center of the lung or masses adjacent to the airways. In this procedure, the patient may receive mild sedation, meaning they are in a semi-sleepy state. Lung biopsy through the nose is generally performed using the bronchoscopy method, where a thin tube is inserted through the nose to take a sample from the lung. When the lung biopsy is performed through the nose, the patient is prepared with local anesthesia and flexible tubes are used that reach the bronchi. Oral lung biopsy allows for sampling from the internal structure of the lung by entering through the mouth with a bronchoscope. During this method, additional techniques such as washing (lavage) or brushing may also be used to gather information if necessary. Generally, discharge on the same day is possible.
- Surgical Biopsy (Thoracoscopic or Open Biopsy): If sufficient samples cannot be obtained with other methods or if access to the tissue is difficult, surgical biopsy may be necessary. This procedure is performed under general anesthesia. A few small incisions are made in the chest wall, and the biopsy is performed through cameras and surgical instruments placed inside. Open surgical biopsy is performed with a larger incision and is generally preferred in serious cases. Surgical biopsy provides a significant advantage in clarifying the diagnosis because it allows for more tissue to be obtained.
- Cryobiopsy (Frozen Biopsy): This is a newer technique and is generally used in interstitial (connective tissue-derived) lung diseases. In this method, applied during bronchoscopy, tissues are suddenly frozen with a special device and taken without disrupting their integrity. It is preferred in situations where the preservation of microscopic structure is desired.
Frequently Asked Questions
In Which Situations is Lung Biopsy Requested?
Lung mass biopsy is generally requested when a suspicious mass, nodule, or abnormal tissue is seen in the lungs. These suspicious structures are often noticed in imaging tests such as computed tomography or X-ray, and a biopsy is needed to understand whether they are benign or malignant. Especially in cases where cancer is suspected, biopsy is a critical step for confirming the diagnosis and planning appropriate treatment. Additionally, long-term cough of unknown cause, unexplained shortness of breath, or symptoms resembling infection that do not respond to treatment may also require biopsy. This method may also be used in the diagnosis of some connective tissue diseases or interstitial lung diseases.
Does Lung Biopsy Hurt?
Patients generally do not feel pain during the biopsy because local or general anesthesia is applied. After the procedure, there may be mild pain or discomfort at the site of the needle entry. This pain is usually short-lived and mild, and can often be controlled with simple pain relievers.
Is There a Risk in Lung Biopsy?
Like any medical procedure, biopsy has some risks. One of the most common risks is pneumothorax, which occurs due to air leakage into the pleura, resulting in lung collapse. This condition usually resolves on its own and is minor, but rarely may require tube placement. Complications of lung biopsy include pneumothorax, bleeding, infection, and rarely air embolism. Therefore, the patient is thoroughly evaluated before the biopsy.
How Long Does Lung Biopsy Take?
The biopsy procedure itself usually takes between 30 minutes to 1 hour. However, the length of hospital stay may vary depending on the method. For example, after needle biopsy, a few hours of observation may be sufficient, while surgical biopsies may require an overnight stay in the hospital.
When Do Lung Biopsy Results Come Out?
The detailed examination of the sample taken in the laboratory may take a few days. Generally, results come out between 3 to 7 days. However, in some cases, this period may be extended due to the need for special tests. Your doctor will provide a detailed explanation when the result is received.
Is There Bleeding After Lung Biopsy?
It is normal to have a small amount of bleeding in needle biopsies. Seeing blood in the sputum in streaks is not concerning. However, in cases of heavy and persistent bleeding, it is necessary to seek medical attention without delay.
Is Lung Biopsy Done with a Needle?
One of the most commonly performed methods is transthoracic biopsy performed with a needle. Using fine or thick needles, a small tissue sample is taken directly from the suspicious area of the lung. This procedure is performed under imaging methods such as CT or ultrasound.
What is Closed Lung Biopsy?
Closed lung biopsy is generally performed using the bronchoscopy method and is carried out without any external incisions. This method, which is performed by entering through the mouth or nose, is more advantageous for centrally located masses or areas close to the airways. It is a less traumatic method for the patient.
What Should Be Considered After Lung Biopsy?
After lung biopsy, patients are kept under observation for a few hours and monitored for complications such as lung collapse. The development of pneumothorax, or lung collapse, after lung biopsy can particularly occur in transthoracic interventions. It is very important to fully comply with the doctor’s recommendations after the procedure. Heavy exercise should be avoided for the first few days, and rest should be prioritized. If symptoms such as increased cough, shortness of breath, high fever, or severe chest pain develop, medical attention should be sought without delay. Redness, swelling, or signs of infection at the site of the procedure may also indicate infection.
Can Lung Biopsy Results Indicate Cancer?
A cancer diagnosis may be made based on the biopsy result, but this does not always mean that it will be the case. Most nodules seen are likely to be benign. However, if cancerous cells are detected, the biopsy can provide information about the type, stage, and spread of the tumor. This is extremely decisive in treatment planning.
Lung biopsy is one of the most reliable methods for making a definitive diagnosis of suspicious structures in the lungs. If you are experiencing symptoms or your doctor has recommended a biopsy, it is important to seek expert support without delay.
You can immediately consult our Interventional Radiology department with our specialized physicians and get detailed information by making an appointment.
