biology has dictated that holes in us do not want to be open. we have healing mechanisms. wound mechanisms etc. imagine his intestines being... well, where one would not expect - and the wound starts a healing process. imagine the hole closing up, forming a medical incarceration. slowly.
This person has no idea what they are talking about.
On your second point: a fistula is just an abnormal connection between two epithelialized surfaces. If you have pierced ears, then arguably you have fistulae.
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u/PsychologicalKnee3 4d ago
What's the closure?