Final answer:
Potentially life-threatening consequences of PID include ovarian abscess and ectopic pregnancy.
Step-by-step explanation:
Potentially life-threatening consequences of pelvic inflammatory disease (PID) include ovarian abscess and ectopic pregnancy. PID is an infection of the female reproductive organs, such as the uterus, cervix, fallopian tubes, and ovaries. If left untreated, PID can lead to complications that can be severe and endanger the patient's life.