Can a uterine cavity hematoma post vag hyst be dispersed with u/s or laser therapy or sucked out safely? sitting on top of vag vault. very painful

Sometimes: Not with laser or ultrasound, but if they are persistent and causing pain, some surgeons will go back in and remove/evacuate the hematoma.

Yes: If you had pain to begin, as the source of the pain, it could be a continuation. In cases of a hematoma that gets infected they are drained surgically. Remember the blood has antibiotics in it which reduces infection. It's difficult but will likely pass and make sure you don't have a bladder infection. There if no means to obliterate the blood. Expectant management unless infected;.