Cryoprobe bronchoscopy is a specialized, minimally invasive procedure where a flexible probe utilizing extreme cold, via the Joule-Thomson effect, is passed through a bronchoscope.
A bronchoscope, a thin, lighted tube, is guided down the throat into the airways, often under conscious sedation or general anesthesia.
The cryoprobe—a slender catheter—is inserted through the working channel of the bronchoscope and placed against the target tissue or blockage.
The metal tip of the probe rapidly cools (down to -79°C to -89°C), and the extreme cold creates an ice ball, adhering the tissue to the probe so it can be extracted.
It is primarily used to extract larger, high-quality tissue samples for biopsy (cryobiopsy) or to clear blockages in the airway (cryotherapy).
The procedure can be used to diagnose interstitial lung diseases (ILD) and peripheral lung nodules.
It is an alternative to surgical open-lung biopsy, offering larger tissue samples than traditional forceps while preserving tissue architecture.
Endobronchial Cryotherapy: can removes benign or malignant tumors blocking the central airways (cryoablation).
Cryoextraction: Highly effective to removing aspirated foreign bodies or thick mucus plugs from the airways without damaging surrounding tissue.
Advantages: Yields significantly larger and better-preserved tissue specimens than traditional forceps, which is critical for accurate pathological evaluation and molecular biomarker testing.
Safety: Associated with fewer risks like punctured lungs (pneumothorax) compared to CT-guided needle biopsies of the lung periphery.
Allows for a shorter hospital stay, less pain, and quicker recovery than open surgical procedures.
Cryoprobe bronchoscopy does carry some procedural risks.
The most common are minor bleeding at the biopsy site (which is usually controlled during the procedure) and a small risk of pneumothorax.