Implantation outside the uterus defines which condition?

• A. Placenta Previa
• B. Ectopic Pregnancy
• C. Nuchal Cord
• D. Neonate

Answer: (B)

Implantation outside the uterus is an ectopic pregnancy. In this condition, the fertilized egg implants somewhere other than the uterine lining, most commonly in the fallopian tube. This is why it’s dangerous: the pregnancy cannot develop normally in that location, and a growing pregnancy can cause rupture and life‑threatening internal bleeding if not treated promptly.

Clinically, it often presents with abdominal or pelvic pain and vaginal bleeding, and a pregnancy test may be positive while ultrasound shows no intrauterine gestational sac. Risk factors include prior ectopic pregnancies, tubal disease or damage (such as from pelvic inflammatory disease), smoking, and certain infertility treatments.

Management depends on stability and location. If rupture hasn’t occurred and the patient is stable with a small, unruptured ectopic pregnancy, medications like methotrexate can be used to stop the growth. If there is rupture, significant bleeding, or other concerning features, surgical intervention to remove the ectopic tissue or the affected tube may be necessary.

For contrast, placenta previa involves the placenta implanting low in the uterus near or over the cervix; a nuchal cord refers to the umbilical cord looped around the baby's neck; a neonate is a newborn.