Review Question - QID 107267

A 7-year-old boy presents to his pediatrician with a 2-day history of fatigue and easy bruising. He came back from soccer practice with large bruises all over his legs recently. He had a cold about 1 week ago that resolved without treatment. Otherwise, he has been healthy without any significant medical history. His vaccinations are fully up to date. His temperature is 98.6°F (37°C), blood pressure is 108/67 mmHg, pulse is 79/min, respirations are 13/min, and oxygen saturation is 98% on room air. The patient has the finding shown in Figure A. Labs are performed with the following results:
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