What is the medical term for the surgical procedure to remove a tissue sample for diagnosis?

The correct answer is the term "biopsy." A biopsy refers specifically to a surgical procedure in which a small sample of tissue is removed from the body for microscopic examination. This procedure is crucial in diagnosing various medical conditions, particularly cancers, because it allows pathologists to examine the cellular structure of the tissue to determine whether it is benign or malignant.

In contrast, "excision" generally describes the surgical removal of tissue or organs, usually in their entirety rather than just a sample. "Suturing" is a technique used to close wounds or surgical openings, and "incision" refers to the act of cutting into tissue or an organ to access it for surgery. While all these terms relate to surgical procedures, only biopsy specifically denotes the collection of a tissue sample for diagnostic purposes.