Final answer:
A flexible fiber-optic laryngoscopy is a minimally invasive medical procedure that uses a fiber-optic endoscope to examine and treat conditions in the larynx. It facilitates high-resolution internal imaging and surgery, as well as enables the delivery of laser treatments without making large incisions.
Step-by-step explanation:
A flexible fiber-optic laryngoscopy is a medical procedure that utilizes a fiber-optic bundle within an endoscope to observe and diagnose conditions within the larynx or voice box. This advanced technique involves the transmission of light through the fiber-optic cable, allowing doctors to navigate around hard-to-reach areas and perform various diagnostic and therapeutic interventions. Using light transmitted down one bundle to illuminate the internal structures, and another bundle to transmit the reflected light back, the procedure provides high-quality imaging of internal parts without requiring large incisions. Endoscopies, such as flexible fiber-optic laryngoscopy, can also be used to perform microsurgical tasks, including removing tissue for biopsy. The technology also allows for the transmission of a laser beam to burn away obstructing plaques in arteries or activate chemotherapy drugs, highlighting the versatility beyond mere diagnostics. Special lenses and filters can be attached to the ends of the fibers to enhance the imaging of small regions, making the process invaluable in the non-intrusive diagnostics of diseases like cancer.