What type of surgery involves the complete removal of a lung or part of it?

The type of surgery that involves the complete removal of a lung or part of it is known as a pneumonectomy. This procedure typically entails the surgical excision of an entire lung and is often performed in cases of advanced lung disease, such as lung cancer, where other treatments are not effective or possible.

Pneumonectomy can address severe infections, tumors, or other serious lung conditions by ensuring that affected tissue does not compromise overall respiratory function. The term "pneumonectomy" itself signifies the removal of lung tissue, specifically referencing a significant portion or the entirety of one lung.

Other options describe different procedures: a partial lobectomy involves removing only a portion of a lobe of the lung, while a complete lobectomy involves the removal of an entire lobe but not the complete lung. An appendectomy refers to the removal of the appendix and is unrelated to lung surgery. Thus, pneumonectomy is the most accurate choice for the complete removal of a lung or a significant portion of lung tissue.