Background/Introduction: An ectopic pregnancy occurs when an embryo implants somewhere other than uterus such as in one of the fallopian tubes. Ectopic pregnancy can occur in any extrauterine location in the abdomen but fallopian tube is one of the most frequent site for ectopic implantation. The risk factors associated with ectopic pregnancies varies and includes pelvic inflammatory diseases, previous pelvic or abdominal surgeries and Intrauterine contraceptive device (IUCD). Chlamydia trichomatis is associated with 30-50% cases of ectopic pregnancy.

Aim: The aim of the study is to know the various histopathological changes in ectopic pregnancies in the fallopian tube and the predisposing factors for ectopic pregnancies

Materials And Methods: It is a comparative cross sectional study where 115 fallopian tubes having clinical diagnosis of ectopic gestation and 20 cases of fallopian tubes received after sterilization procedure which is taken for comparison.

Results: Out of 115 specimens of fallopian tubes pelvic inflammatory diseases including acute salpingitis 35% [40 cases], chronic salpingitis 54% [62 cases], salpingitis isthmica nodosa (SIN) [10.4%] 12 cases. 0.6% [1 case] of granulomatous diseases was identified as cause of ectopic pregnancy.

Conclusion: Early diagnosis [A Greatest Challenge], identification of risk factors and timely intervention will help in reducing morbidity and mortality associated with ectopic pregnancy.

Keywords: Ectopic Pregnancy; Fallopian Tubes; Pelvic Inflammatory Disease (Pid).