What Is the Most Likely Diagnosis for This Infant

a 2-week-old Infant Presents with Ambiguous Genitalia, Electrolyte Imbalances and Dehydration. Physical Examination Reveals Hyperpigmentation of the Genitalia and Mucous Membranes. Laboratory Tests Indicate Elevated Levels of 17-hydroxyprogesterone and Decreased Serum Sodium. Adrenal Imaging Reveals Bilateral Enlargement