<prompt> Ectopic pregnancy is most commonly associated with:EndometriosisCongenital tubal anomaliesTuberculosisTubal inflammatory diseases  <response>: Read the question carefully, it says ectopic pregnancy is most commonly associated with:Pelvic inflammatory disease PID increases the risk of ectopic pregnancy by 6-10 fold.Dutta Obs. 7e, p 178The most common cause of ectopic pregnancy is previous salpingitis due to sexually transmitted disease such as gonococcal and chlamydial infection or salpingitis that follows septic abortion and puerperal sepsis.Shaw 14e, p 239After one episode of PID 13After two episode of PID 35After three episode of PID 75Note: MC cause of ectopic pregnancy is PID but Maximum risk of ectopic pregnany is after tubal damage, either due to previous ectopic pregnancy or tubal surgery amongst which previous ectopic is more common.Prior tubal damage either; from a previous ectopic pregnancy or from tubal surgery to relieve infertility or for sterilization confers the highest risk for ectopic pregnancy.Williams Obs 23e, p 238 