What procedure alters a part of the body anatomy without removing any part?

The correct answer is associated with the term "plasty," which refers to a surgical procedure that involves the reconstruction or reshaping of a body part without excising any tissue. This can include various types of surgeries, such as rhinoplasty (nose reshaping) or angioplasty (widening of narrowed blood vessels), where the original structure is modified or repaired rather than removed. This technique aims to restore function or improve cosmetic appearance without creating a deficiency due to loss of material.

In contrast, the other terms reflect different surgical or procedural concepts. An ostomy involves creating an opening (stoma) in the body, typically as a route for waste elimination, which alters the anatomy significantly. Otomy denotes a surgical incision into a part of the body but does not imply any reconstruction or non-removal procedure; it typically involves accessing internal structures. Angiography, on the other hand, is a diagnostic imaging procedure used to visualize the inside of blood vessels and organs, meaning it focuses on imaging rather than altering anatomy.