What is the term for the surgical removal of an organ or tumor in its entirety?

The term for the surgical removal of an organ or tumor in its entirety is "excision," which is closely related to the choice of surgical terms provided. While enucleation refers specifically to the removal of a tumor or organ in a way that preserves the surrounding structures, this is not as comprehensive a definition as what is needed for complete removal.

Resection generally refers to the removal of a portion of an organ or tissue rather than the entirety, which distinguishes it from what is being asked in the question. For instance, in a resection of the bowel, only a segment of the bowel is taken out, while the remaining parts remain intact.

Amputation refers specifically to the surgical removal of a limb or part of a limb and does not apply to internal organs or tumors. Thus, the correct vocabulary to focus on complete organ or tumor removal should lean towards excision or related terms that capture the idea of total removal.