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Ectopic pregnancies are referred to as:

1. Implantation of embryo at site other than uterus.
2. Implantation of defective embryo in the uterus.
3. Pregnancies terminated due to hormonal imbalance.
4. Pregnancies with genetic abnormality.

Correct answer: Implantation of embryo at site other than uterus.

Solution

An ectopic pregnancy occurs when a fertilized egg implants outside the uterine cavity. The most common site is the fallopian tube, so the correct choice is the one describing implantation at a site other than the uterus.

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