Which type of cancer treatment might utilize the AP/PA port for lung tumors?

The correct answer is radiation therapy. This treatment approach frequently uses specific radiation beam configurations to target tumors effectively while minimizing exposure to surrounding healthy tissue. The AP (anterior-posterior) and PA (posterior-anterior) port techniques involve positioning the radiation beams to enter the body from the front and back, making them particularly suitable for treating lung tumors. This method allows for a focused delivery of radiation directly to the tumor site in the lungs while sparing adjacent structures and reducing potential side effects.

Other modalities, like chemotherapy, involve systemic treatment whereby drugs circulate throughout the body, making them less reliant on specific directional techniques used by radiation. Surgery is a more direct physical intervention aimed at removing the tumor rather than using directed beams of radiation. Immunotherapy is a form of treatment that utilizes the body's immune system to fight cancer, which does not involve targeted radiation approaches similar to those seen in radiation therapy.