What is the most likely diagnosis for a 12-year-old boy with edema, hypoalbuminemia, and proteinuria?

• A. Minimal change nephrotic syndrome
• B. Diabetic glomerulosclerosis
• C. Focal segmental glomerulosclerosis
• D. Poststreptococcal glomerulonephritis

Answer: (A)

In a 12-year-old boy presenting with edema, hypoalbuminemia, and significant proteinuria, the clinical picture is characteristic of nephrotic syndrome. Among the various types of nephrotic syndrome, minimal change nephrotic syndrome is the most common form seen in children, particularly those in the age group of 1 to 12 years.

Minimal change nephrotic syndrome is defined by these classic symptoms: heavy proteinuria (>3.5 g/day), low serum albumin levels leading to hypoalbuminemia, and often accompanying edema due to the loss of oncotic pressure. The diagnosis is supported by the absence of significant findings on renal imaging or serological markers, and the condition typically responds well to corticosteroid therapy.

While diabetic glomerulosclerosis and focal segmental glomerulosclerosis can also lead to nephrotic syndrome, they are less common in this age group and often present with different clinical histories or risk factors, such as a long-standing history of diabetes in the case of diabetic glomerulosclerosis.

Poststreptococcal glomerulonephritis usually follows a streptococcal infection and is more commonly associated with hematuria, hypertension, and renal impairment rather than the classic nephrot