Chondrolaryngoplasty

Chondrolaryngoplasty (commonly called tracheal shave) is a surgical procedure in which the thyroid cartilage is reduced in size by shaving down the cartilage through an incision in the throat, generally to aid those who are uncomfortable with the girth of their Adam's apple.

After an anesthetic (local or general, depending on whether or not it is the only surgery to be performed) is administered to the patient, a small, horizontal incision is made on the bottom of the Adam's apple. The muscles in the throat are then held apart with forceps, and the protruding cartilage is shaved down with a scalpel, thus making the throat appear smoother and less angular. The incision is then closed with sutures, and a red line will mark the incision for about six weeks. Little scarring occurs in most cases because the surgeon will usually make the incision in one of the minuscule folds of skin that cover the Adam's apple.

The surgery is usually outpatient unless it is combined with other surgeries that require hospital stays. Particular care must be taken by the surgeon to not remove too much cartilage, as doing so can reduce the structure of the trachea and cause breathing difficulties.

Most surgeons who specialize in gender reassignment surgeries offer the procedure, and some general plastic surgeons will as well. It is one of the more common surgeries performed on transgender women, along with genital reconstruction.

Due to the proximity of the vocal folds, there is the small possibility that they may be damaged during this type of surgery. Generally, however, the patient's voice is unaffected, although there have been reports of slight change in pitch. Some patients will choose to undergo additional vocal surgery at the same time in order to minimize voice-related dysphoria.

...
Wikipedia