Most common cause of congenital hypothyroidism: (Repeat)
Ans: A (Thyroid dysgenesis) Ref: Nelsons Textbook of Pediatrics. 19th Edition. Pg.1895Explanation:"Most cases of congenital hypothyroidism results from thyroid dysgenesis "(Ref: Nelson)Refer 2013 Pediatrics Question Explanation
Thyroid dysgenesis
Maternal antibodies
Inborn errors of thyroid hormone defects
Maternal iodine deficiency
Thyroid Gland