摘要目的:探讨糖原累积病Ⅱ型（GSD Ⅱ）的诊治要点。方法:对海南省儿童医院2017年5月7日收治的GSD Ⅱ患儿1例的临床资料进行回顾性分析。结果:患儿以肺炎起病，伴有肌无力，肌酶升高，临床表现不典型。全基因测序检测提示该例患儿的酸性α-葡萄糖苷酶（GAA）基因有2个杂合突变，分别为c.871C > T及c.1447G > A，诊断为GSD Ⅱ。结论:GSD Ⅱ临床表现不典型，易误诊，早期行全基因检测可能对疾病诊断具有一定帮助。

abstractsObjective:To investigate the key points of diagnosis and treatment of glycogen storage disease type Ⅱ(GSD Ⅱ).Methods:The clinical data of one child patient with GSD Ⅱ who received treatment in Hainan Children's Hospital on May 7, 2017 were retrospectively analyzed.Results:The child presented with atypical clinical manifestations, including pneumonia first, accompanied by muscle weakness and elevated muscle enzymes. Whole-genome sequencing showed that there were two heterozygous mutations in the acid alpha-glucosidase (GAA) gene, c.871C > T and c.1447G > A. The child was diagnosed with GSD Ⅱ.Conclusion:GSD Ⅱ has atypical clinical manifestations. It is easily misdiagnosed. Early whole-genome sequencing is helpful for the diagnosis of GSD Ⅱ.