Anatomy Primary hyperparathyroidism is caused by -a) Parathyroid hyperplasiab) Adenosisc) MEN 1d) Thyrotoxicosise) CRF A ab B bc C abc D bcd 💡 Explanation Primary hyperparathyroidism is caused by -a) Parathyroid hyperplasiab) Adenosisc) MEN 1d) Thyrotoxicosise) CRF ✓ Correct Answer: C. abc