Final answer:
When a primary malignancy has been previously excised or eradicated from its site, no further treatment is directed to that site.
Step-by-step explanation:
The statement is true. When a primary malignancy has been previously excised or eradicated from its site and there is no evidence of any existing primary malignancy at that site, there is no further treatment directed to that site. This is because the main goal of surgery in treating cancer is to remove the entire tumor or mass along with local lymph nodes, if necessary, in order to cure the cancer or at least reduce symptoms and prolong survival. Once the malignancy has been completely removed, further treatment may not be required unless there is evidence of recurrence or metastasis.