Obstetrics and Gynaecology

Molar Pregnancy

Q: What is the primary pathophysiological mechanism underlying a molar pregnancy?

Abnormal fertilization leads to trophoblastic hyperplasia and abnormal chorionic villi formation, which are hallmarks of a molar pregnancy. This results in the characteristic histological and clinical features.

Q: A 25-year-old woman presents with vaginal bleeding in early pregnancy. Ultrasound reveals a 'snowstorm' appearance. What is the most likely diagnosis?

The 'snowstorm' appearance on ultrasound is characteristic of a complete mole, which is a type of hydatidiform mole. This condition is often associated with vaginal bleeding and a uterus larger than expected for gestational age.

Q: What is the karyotype typically associated with a complete mole?

A complete mole is typically characterized by a 46XX karyotype, which is entirely paternal in origin. This occurs when an empty ovum is fertilized by a single sperm that duplicates.

Q: A patient with a molar pregnancy is at risk of which serious complication?

Hemorrhage is a serious and common complication of molar pregnancy, particularly during evacuation. It can lead to significant morbidity and mortality if not managed promptly and effectively.

Q: What is the first-line management for a molar pregnancy?

Suction curettage is the standard first-line management for molar pregnancy. It is effective in evacuating the uterus and reducing the risk of complications.

A molar pregnancy, also known as a hydatidiform mole, is an abnormal pregnancy characterized by abnormal trophoblastic proliferation and chorionic villi development, often resulting from an abnormal fertilization event. This condition is clinically significant because it can progress to gestational trophoblastic neoplasia, a potentially life-threatening condition, and requires prompt recognition and management to prevent complications. Understanding molar pregnancy is essential for medical students as it highlights the importance of early pregnancy assessment, accurate diagnosis, and appropriate management to minimize risks and ensure optimal patient outcomes.

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1. What is the primary pathophysiological mechanism underlying a molar pregnancy?

2. A 25-year-old woman presents with vaginal bleeding in early pregnancy. Ultrasound reveals a 'snowstorm' appearance. What is the most likely diagnosis?

3. What is the karyotype typically associated with a complete mole?

4. A patient with a molar pregnancy is at risk of which serious complication?

5. What is the first-line management for a molar pregnancy?

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Molar Pregnancy

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