Gynaecology & Obstetrics Infections of the genital tract 979fea8a Definitive criteria for PID is A Tubo-Ovarian abscess on USG B Cervical erosion C Temparature > 37.5 degrees D Infeility High-Yield Explanation Chronic pelvic inflammatory disease manifest as Hydrosalpinx Chronic pyosalpinx Tubo ovarian abscess or cyst Tubercular tubovarian masses Ref: Shaw Gynecology 17 e pg 340.