<prompt> Ectopic pregnancy differs from threatened aboion by :Minimal vaginal bleedingPain follows bleedingUterine size corresponds to gestational ageManifests at an early age  <response>: Ans. is d i.e. Manifests at an early age This is a tough one : as it is quite difficult to differentiate between Ectopic pregnancy and threatened aboion on the clinical grounds. Ectopic pregnancy Vs Manifests at an early age Symptom-chronology : Abdominal pain is followed by bleeding. Pain is the main symptom. Fainting attacks seen. Aboion Threatened AIM The initial period of amenorrhea tends to be longer Uterine bleeding precedes abdominal pain. Bleeding is the main symptom and overshadows pain. Fainting attack absent. In ectopic pregnancy as well as threatened absorption - amount of bleeding is slight. 