tracheotomy
The lumen is the opening of the tube through which the "stuff" made by the gland exits. Some of that stuff (secretions) has hardened.
The medical terminology combining form for the surgical creation of an artificial opening is "otomy." Examples include tracheotomy (creation of an opening in the windpipe) or colostomy (creation of an opening in the colon).
An enterostomy is the surgical creation of an artificial opening into the intestine.
Pyelostomy is surgical creation of an artificial opening into the renal pelvis
Jejunostomy is surgical creation of an artificial opening into the jejunum.
a surgical creation of an artificial opening
Antrostomy is the medical term meaning surgical creation of an artificial opening into the maxillary sinus.
A tracheotomy is a surgical procedure in which a cut or opening is made in the windpipe (trachea). The surgeon inserts a tube into the opening to bypass an obstruction, allow air to get to the lungs, or remove secretions.
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The medical term for surgical creation of an artificial opening in the septum is "septostomy." This procedure is done to improve blood flow and alleviate pressure in the heart.
Sigmoidostomy is the surgical creation of an artificial opening into the sigmoid colon.
the colon