To cause or undergo the formation of a fistula; to make or become affected by fistula development.
From Latin fistula + -ize (suffix making verbs). This creates an active verb form describing the action of fistula formation or treatment.
Surgeons and dentists use 'fistulize' as a verb—you might hear 'this infected root will fistulize to the surface' meaning the infection will create its own drainage path, which is actually sometimes allowed to happen as a natural treatment.
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