What is the difference between tubo ovarian complex vs tubo ovarian abscess?

Not quite the same: A tubo-ovarian complex can be made up of ovarian cysts involving the far end (distal) end of the adherent Fallopian tube which does not appear to be infected. A tube ovarian abscess demonstrates evidence of an obvious closed infection involving both the Fallopian tube and the ovary. A tubo ovarian complex can also appear to be a tubo ovarian abscess on ultrasound