A patient has spherocytes on the peripheral smear and a positive direct antiglobulin test. Which condition is most likely?
1Autoimmune hemolytic anemia✓ 정답
2Hereditary spherocytosis
3Glucose-6-phosphate dehydrogenase deficiency
4Megaloblastic anemia
해설
Spherocytes occur both in hereditary spherocytosis and in autoimmune hemolytic anemia. The direct antiglobulin test separates them: a positive result indicates immune-mediated hemolysis, that is, autoimmune hemolytic anemia, whereas hereditary spherocytosis is negative.