So long as it's healthy tissue, I'd leave it alone. I've seen a trend with box turtles with persistent prolapses - most of them had bent tails. Which leads to the question, did nerve damage from the bent tail extend all the way to the cloaca?

Katrina
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0.1 Iguana - Tiffel
1.2 Eastern Mud Turtles - Fred, Ethel, Edith
0.0.1 Giant Mex. Musk Turtle
Foster turtles: More than I'd like the husband to know about.