This is called an anastamosis. Pathologically, this can oocur by formation of a fistula.
Anastimosis
stomy mean -formation of an opening sofor examplegastrostomy- it means formation of an opening in the stomach....Probably incision
An orifice is a natural opening.
Antrostomy is the medical term meaning surgical creation of an artificial opening into the maxillary sinus.
-ostomy is the medical terminology combining form meaning surgical creation of an artificial opening into a lumen.
Cecostomy is the medical term meaning surgical creation of a new opening into the cecum.
Foramen
A septal defect is an opening in a septum.
Meatotomy is the medical term meaning surgical incision into a meatus, or opening into a body cavity.
Stoma is the medical term for mouth or opening.
salpingectomy
Esophageal Atresia
An ostomy is a surgically-created opening. A fistula is an abnormal opening or connection.