患者女,19岁,因乏力1个月、咽痛伴发热1周入院,伴有上腹胀,进食少,无恶心、呕吐、腹痛、腹泻或黑便。查体:体温38.5℃,营养状态中等,浅表淋巴结无肿大,睑结膜中度苍白,双侧扁桃体Ⅱ度肿大,腹部无压痛,肝脾肋下未触及。血液检查:血白细胞总数18.7×109／L,中性0.86,血红蛋白80g／L,血清铁2μmol／L,铁蛋白5.96 ng／ml,球蛋白16 Female patient, 19 years old, due to fatigue for 1 month, sore throat with fever for 1 week, accompanied by abdominal distension, eating less, no nausea, vomiting, abdominal pain, diarrhea or melena. Physical examination: body temperature 38.5 ℃, medium nutritional status, superficial lymph nodes without swelling, pale palpebral conjunctiva, bilateral tonsil Ⅱ degree enlargement, no tenderness in abdomen, liver and spleen ribs were not touched. Blood tests: total white blood cells 18.7 × 109 / L, neutral 0.86, hemoglobin 80g / L, serum iron 2μmol / L, ferritin 5.96 ng / ml, globulin 16