Which of the following best defines anastomosis?

Anastomosis is defined as a surgical connection between two hollow organs. This procedure is often performed to restore continuity to the gastrointestinal tract after a segment has been removed or to connect blood vessels, allowing for improved blood flow and reducing the risk of complications associated with obstructions or injuries. In this context, the term emphasizes the reconnection that creates a new passage between two structures, facilitating the normal functions of the organs involved.

The other choices refer to different medical processes. A biopsy procedure involves taking a sample of tissue for examination rather than connecting organs. Tissue repair involves healing or mending tissue, but it does not specifically imply the connection of hollow organs. Surgical interventions for tumors typically focus on removing or treating tumors, and do not necessarily involve anastomosis unless the surgery involves connecting organs post-operatively. Therefore, the correct definition of anastomosis clearly aligns with the surgical connection of two hollow structures.