Which condition is characterized by dependent edema and proteinuria in children?

• A. Minimal change disease
• B. Diabetic nephropathy
• C. Acute glomerulonephritis
• D. Focal segmental glomerulosclerosis

Answer: (A)

Minimal change disease is characterized by significant proteinuria and dependent edema in children. This condition often presents abruptly, typically in children between the ages of 2 and 6, and is the most common cause of nephrotic syndrome in pediatric patients. The hallmark of minimal change disease is the selective loss of albumin (a protein) due to increased permeability of the glomerular capillary wall, which leads to proteinuria and subsequent hypoalbuminemia.

As serum albumin levels drop, the oncotic pressure in the blood decreases, causing fluid to leak into the interstitial spaces, which results in swelling (edema) that is often most noticeable in dependent areas of the body, such as the legs and around the eyes. Unlike some other conditions affecting the kidneys, minimal change disease typically responds well to corticosteroid treatment, further confirming its diagnosis.

In contrast, conditions such as diabetic nephropathy, acute glomerulonephritis, and focal segmental glomerulosclerosis may present with proteinuria and edema but often display additional features or complicate presentations that are distinct from the clinical picture of minimal change disease. For example, diabetic nephropathy is more commonly seen in older patients and is associated with signs of diabetes, while acute