What does a dacryocystectomy involve?

A dacryocystectomy specifically involves the excision of the lacrimal sac, which is a small sac that stores tears before they drain into the nasal cavity. This surgical procedure is typically performed to treat conditions such as lacrimal duct obstruction or chronic dacryocystitis, which can cause excessive tearing or frequent infections.

Understanding the anatomy and purpose of the lacrimal apparatus is essential here. The lacrimal system includes the lacrimal glands, canals, sac, and nasolacrimal duct, all of which work together to maintain tear drainage. When the sac becomes inflamed or blocked, a dacryocystectomy may be necessary to alleviate symptoms and restore normal tear flow.

Thus, the correct answer highlights the targeted nature of this surgical procedure, emphasizing the importance of the lacrimal sac within the ocular system.