A 6-year-old boy is brought to the emergency department because of a 1-day history of colicky abdominal pain and vomiting. He also had a sore throat 2 weeks ago. His temperature is 37.0°C (98.6°F), pulse is 100/min, respirations are 28/min, and blood pressure is 90/55 mm Hg. Examination of the lower extremities shows nonblanching raised erythematous papules. The abdomen is soft and nontender. Bowel sounds are high-pitched. Urinalysis results are as follows: Which of the following renal abnormalities is most likely present in this patient?

Question

A 6-year-old boy is brought to the emergency department because of a 1-day history of colicky abdominal pain and vomiting. He also had a sore throat 2 weeks ago. His temperature is 37.0°C (98.6°F), pulse is 100/min, respirations are 28/min, and blood pressure is 90/55 mm Hg. Examination of the lower extremities shows nonblanching raised erythematous papules. The abdomen is soft and nontender. Bowel sounds are high-pitched.  Urinalysis results are as follows:  Which of the following renal abnormalities is most likely present in this patient?

Quizplus · Accepted Answer

Eductional Objective: Henoch-Schönlein purpura is an IgA-mediated small vessel vasculitis that manifests with palpable purpura on the lower extremities, abdominal pain, arthralgia/arthritis, and renal disease (hematuria ± proteinuria).  Renal involvement is due to IgA deposition in the mesangium.

A 6-Year-Old Boy Is Brought to the Emergency Department Because