The most common organ involved in MEN I is –
Correct Answer: Parathyroid
Description: Primary hyperparathyroidism (parathyroid gland) occurs in approximately 90% of patients and is the most common feature of MEN 1. Other organs involved are- * Enteropancreatic tumor (30-70%)*Pituitary adenoma (15-50%)*Adrenal coical tumor (20-70%), Pheochromocytoma(<1%), Bronchopulmonary NET(2%), Thymic NET(2%), Gastric NET(10%), Lipomas(>33%), Angiofibromas(85%), Collagenomas(70%), Meningiomas(8%) Reference : page 2336 Harrison's Principles of Internal Medicine 19th edition
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