A 5-Year-Old Boy Is Admitted to the Pediatric Unit with a Fractured

A 5-year-old boy is admitted to the pediatric unit with a fractured tibia. Routine blood work is ordered. His PB smear shows moderate spherocytosis. An osmotic fragility is also ordered, and the test result indicates an increased osmotic fragility. Based on these findings, what is the most likely defect?

A) Hereditary elliptocytosis
B) Hereditary spherocytosis
C) Microangiopathic hemolytic anemia from trauma
D) Cold autoimmune hemolytic anemia

Correct Answer:

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