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Bronchoscopy can be performed via the patient's mouth (A) or through the nose (C). During the procedure, the scope is fed down the trachea and into the bronchus leading to the lungs (B), providing the physician with a view of internal structures (D). (Illustration by GGS Inc.)

For a thoracotomy, the patient lies on his or her side with one arm raised (A). An incision is cut into the skin of the ribcage (B). Muscle layers are cut, and a rib may be removed to gain access to the cavity. (C). Retractors hold the ribs apart, exposing the lung (D). After any repairs are made, the cut rib is replaced and held in place with special materials (E). Layers of muscle and skin are stitched. (Illustration by GGS Inc.)

The doctor inserts the laryngoscope into the patient's mouth, advancing through the trachea to the vocal cords (A). An endotracheal tube is inserted into the airway (B). The balloon cuff is inflated, and the laryngoscope is removed (C). (Illustration by GGS Inc.)

At the site of a previous cancer removal, a radionuclide dye is injected (A and B). The area of maximum radioactivity is traced to a lymph node under the arm (C). The area is cut open, and the lymph node is identified by its blue dye (D). After the lymph node is removed, the area is checked for further radioactivity (E). (Illustration by GGS Inc.)

During a lung transplant, the chest is opened to reveal the heart, lungs, and major blood vessels (A). Inferior and superior pulmonary veins and pulmonary artery are separated, and lung is removed (B). The bronchus of the donor lung is connected to the patient's existing bronchus (C). The pulmonary artery is attached (D), and the pulmonary vein and other blood vessels are also connected (E). (Illustration by GGS Inc.)

Chest is opened to expose the diseased heart and lung to be removed (A). Heart and lung function is taken over by a heart-lung machine. Major blood vessels are severed, and the heart is removed (B). Bronchus and blood vessels leading to the lung are severed, and the lung is removed (C). Donor heart and lung are placed in the patient's the chest cavity (D). They are sutured to their appropriate connections, and the heart is restarted before the patient is taken off the heart-lung machine (E). (Illustration by GGS Inc.)