Expert answer:
It depends on which ultrasound was done: by the belly the visualization of the ovary is difficult, the transvaginal visualization is easier, but it can happen that the ovary is there and the examination does not show.
After laparoscopic surgery to remove teratoma measuring around 4 cm, the doctor kept the ovary, but was asked for an ultrasound after 2 months of surgery and the doctor could not visualize the ovary operated is this normal?
It depends on which ultrasound was done: by the belly the visualization of the ovary is difficult, the transvaginal visualization is easier, but it can happen that the ovary is there and the examination does not show.