Final answer:
A patient with a cancerous tumor in the lung's right lower lobe would most likely be treated with surgical removal of the tumor, which is the primary treatment if the cancer is isolated and has not widely metastasized.
Step-by-step explanation:
A patient diagnosed with a cancerous tumor in the right lower lobe of the lung would likely undergo a surgical removal of the tumor. This surgery is typically the primary treatment for isolated, solid cancers that have not spread significantly. It involves the resection of the tumor and may include the removal of adjacent lymph nodes. If cancer has not metastasized, surgery has the potential to be curative. However, if the cancer has spread, surgery may serve to reduce symptoms and prolong the patient's survival. In any case, a biopsy is performed to confirm the diagnosis of cancer before proceeding with treatment options such as surgery, chemotherapy, or radiation therapy.