Bronchoscopy is a safe, minimally invasive procedure that allows doctors to examine the inside of the airways and lungs using a thin, flexible tube called a bronchoscope. It is commonly performed by a pulmonologist to diagnose and treat a wide range of respiratory conditions, including lung cancer, persistent cough, lung infections, airway blockage, tuberculosis (TB), interstitial lung disease (ILD), and unexplained breathing problems.

With advancements such as Endobronchial Ultrasound (EBUS) bronchoscopy, doctors can obtain accurate tissue samples from the lungs and lymph nodes without the need for major surgery, making bronchoscopy one of the most important procedures in modern respiratory medicine.

Types of Bronchoscopy

Flexible Bronchoscopy

Flexible bronchoscopy is the most commonly performed procedure. A thin, flexible bronchoscope is inserted through the nose or mouth under local anesthesia and mild sedation. It is used to examine the airways, collect tissue samples, diagnose lung diseases, and perform minor therapeutic procedures.

Rigid Bronchoscopy

Rigid bronchoscopy is performed under general anesthesia using a rigid metal bronchoscope. It is mainly recommended for removing large airway obstructions, controlling severe bleeding, removing foreign bodies, and performing advanced airway interventions.

Why is Bronchoscopy Done?

Your doctor may recommend bronchoscopy if you have:

• Persistent cough lasting more than 8 weeks 
• Coughing up blood (Hemoptysis) 
• Abnormal chest X-ray or CT scan 
• Suspected lung cancer 
• Recurrent chest infections 
• Tuberculosis requiring confirmation 
• Unexplained shortness of breath 
• Wheezing not responding to treatment 
• Lung collapse (Atelectasis) 
• Airway narrowing or obstruction 
• Interstitial Lung Disease (ILD) 
• Suspicious lung nodules or lung masses 

Conditions Diagnosed with Bronchoscopy

Bronchoscopy helps diagnose and evaluate:

• Lung Cancer 
• Tuberculosis (TB) 
• Pneumonia and difficult lung infections 
• Interstitial Lung Disease (ILD) 
• Sarcoidosis 
• Airway tumors 
• Pulmonary fibrosis 
• Bronchiectasis 
• Chronic lung infections 
• Airway stenosis (narrowing) 
• Foreign body aspiration 

Investigations Performed During Bronchoscopy

Bronchoalveolar Lavage (BAL)

A sterile saline solution is introduced into the lungs and collected back to detect bacterial, viral, fungal, or inflammatory lung diseases.

Bronchial Biopsy

Small tissue samples are taken from abnormal areas inside the airways for microscopic examination.

Transbronchial Lung Biopsy (TBLB)

Used to obtain lung tissue samples for diagnosing interstitial lung diseases, infections, and lung cancer.

Endobronchial Ultrasound (EBUS)

EBUS bronchoscopy combines ultrasound with bronchoscopy to evaluate lymph nodes and lung masses. It is considered the gold standard for diagnosing and staging lung cancer without surgery.

Brush Cytology

Special brushes collect cells from suspicious lesions for laboratory analysis.

Therapeutic Uses of Bronchoscopy

Bronchoscopy is not only a diagnostic procedure but also an effective treatment option for several airway conditions.

It can be used to:

• Remove mucus plugs 
• Remove inhaled foreign bodies 
• Control airway bleeding 
• Relieve airway obstruction caused by tumors 
• Place airway stents 
• Dilate narrowed airways 
• Clear thick secretions from the lungs 

How is Bronchoscopy Performed?

• The patient is asked to fast for several hours before the procedure. 
• Local anesthesia is given to numb the throat, along with mild sedation for comfort. 
• The bronchoscope is inserted through the nose or mouth into the lungs. 
• The pulmonologist carefully examines the airways and performs biopsies or collects samples if required. 
• The procedure generally takes 20–60 minutes. 
• Most patients return home the same day after a short observation period. 

Benefits of Bronchoscopy

• Minimally invasive procedure 
• No surgical incision required 
• Accurate diagnosis of lung diseases 
• Early detection of lung cancer 
• Helps avoid unnecessary surgery 
• Allows tissue diagnosis for personalized treatment 
• Safe and quick recovery 
• Can diagnose and treat airway problems during the same procedure 

Risks of Bronchoscopy

Bronchoscopy is considered a safe procedure when performed by experienced pulmonologists. However, like any medical procedure, it carries some risks, including:

• Mild sore throat 
• Temporary cough 
• Hoarseness of voice 
• Minor bleeding after biopsy 
• Low-grade fever 
• Infection (rare) 
• Pneumothorax (collapsed lung) after lung biopsy (uncommon) 
• Temporary drop in oxygen levels during the procedure 

Most side effects are mild and resolve within a day or two.

Recovery After Bronchoscopy

• Patients are monitored for a few hours after the procedure. 
• Eating and drinking can usually resume once the numbness in the throat wears off. 
• Mild throat discomfort or cough may persist for 24 hours. 
• Normal daily activities can usually be resumed the following day unless advised otherwise. 

Prognosis

Bronchoscopy is one of the most valuable procedures in respiratory medicine because it enables early diagnosis and timely treatment of lung diseases. When combined with advanced techniques like EBUS-guided biopsy, bronchoscopy significantly improves the accuracy of diagnosing lung cancer, tuberculosis, interstitial lung disease, airway tumors, and chronic lung infections.

Early diagnosis through bronchoscopy helps doctors develop personalized treatment plans, improves treatment outcomes, and enhances patients' quality of life.