Is it possible to develop another tubular villi adenoma after a removal only 2.5 yrs ago? I am 34 / female Thank you

It is possible. One reason to repeat a colonoscopy 1-2 years after removal of an adenoma is to be sure it didn't grow back, and that nothing else was missed. If a repeat colonoscopy is negative, then perhaps you can wait longer. Speak to your gastroenterologist.