原发性粒细胞肉瘤(primary granulocytic sarcoma,PGS)是指幼稚粒细胞在骨髓外的组织增殖所形成的髓系恶性肿瘤,由于不伴有血液系统的异常,其误诊率高;若不早期诊断和治疗,疾病进展快,多会发展为急性白血病,预后极差;及早正确的诊断与强有力的化疗对患者的远期生存十分重 Primary granulocytic sarcoma (PGS) refers to myeloid malignant neoplasm formed by the proliferation of immature granulocytes in the extramedullary tissue. Misdiagnosis rate is high because it is not associated with abnormal blood system. If not diagnosed early And treatment, the disease progresses rapidly, often will develop into acute leukemia, the prognosis is poor; early diagnosis and powerful chemotherapy for patients with long-term survival is very heavy