1病例报告患者男,3岁,彝族。因反复感冒、咳嗽、咳痰1年,加重1个月就诊。以往无输血史,否认毒物及放射物接触史。父母系近亲结婚,否认母孕期疾病史。体温38.5℃,发育正常,营养较差,贫血貌,神志清楚,全身皮肤、黏膜无黄染,毛发及局限性皮肤色素减少,双侧颈部淋巴结肿大,双肺底可 1 case report Male patient, 3 years old, Yi nationality. Due to repeated cold, cough, sputum for 1 year, increased 1 month treatment. In the past, there was no history of blood transfusions and the history of exposure to poisons and radiation was denied. Married relatives of parents, denied the history of maternal pregnancy. Body temperature 38.5 ℃, normal development, poor nutrition, anemia appearance, conscious, systemic skin, mucosa no yellow dye, hair and limited skin pigmentation, bilateral cervical lymph nodes, the end of the lung can be