A child with a seizure disorder suddenly drops to the floor without warning.
What type of seizure is this?

Choice A rationale

Nephrotic syndrome typically has a gradual onset of symptoms, developing over days to weeks, as protein loss in the urine accumulates. An abrupt onset is less characteristic.

Choice B rationale

Proteinuria, the presence of abnormally high levels of protein in the urine (normal range is less than 150 mg/24 hours), is a defining characteristic of nephrotic syndrome. Damage to the glomeruli in the kidneys leads to increased permeability and leakage of protein into the urine.

Choice C rationale

Hypoalbuminemia in the blood (normal range is 3.5 to 5.5 g/dL) is a key feature of nephrotic syndrome. The excessive loss of protein in the urine leads to a decrease in serum albumin levels.

Choice D rationale

Fever is not typically a primary symptom of nephrotic syndrome. While children with nephrotic syndrome can develop infections, fever is not a direct consequence of the underlying kidney dysfunction.

Choice E rationale

Hyperlipidemia, an elevated level of lipids (fats) in the blood (normal total cholesterol is less than 200 mg/dL), is commonly associated with nephrotic syndrome. The liver increases lipoprotein synthesis in response to the decreased serum albumin levels.

Choice F rationale

While a positive Group A beta-hemolytic streptococcal infection can lead to post-streptococcal glomerulonephritis, which can sometimes present with nephrotic features, it is not a common finding directly associated with the primary diagnosis of nephrotic syndrome itself.

Choice G rationale

Anasarca, which is severe generalized edema characterized by widespread swelling due to fluid retention, is a common finding in nephrotic syndrome. The low serum albumin levels reduce oncotic pressure in the blood vessels, leading to fluid shifting into the interstitial spaces. .

Choice A rationale

Nephroblastoma, also known as Wilms tumor, is the most common malignant renal tumor in young children, typically presenting between the ages of 3 and 4 years. A firm, non-tender abdominal mass, often in the right flank, is a classic finding. The association with aniridia, a congenital absence of the iris, is a known risk factor for Wilms tumor, occurring in WAGR syndrome (Wilms tumor, aniridia, genitourinary anomalies, and intellectual disability).

Choice B rationale

Neuroblastoma is a cancer that arises from immature nerve cells and can occur in various locations, most commonly the adrenal glands. While it can present with an abdominal mass, it is often associated with other symptoms such as fever, weight loss, and irritability due to catecholamine secretion. It is less specifically linked to aniridia than nephroblastoma.

Choice C rationale

Hepatoblastoma is a rare malignant tumor of the liver that typically presents in children younger than 3 years old. While it causes abdominal swelling due to a liver mass, it is not typically associated with aniridia. Palpation might reveal a mass in the upper right quadrant rather than the flank.

Choice D rationale

Hydronephrosis refers to the swelling of a kidney due to a buildup of urine. While it can cause an abdominal mass, it is often associated with urinary symptoms or pain, which are not reported in this case. Furthermore, it is not a malignancy and has no known association with aniridia.