Granulocytic sarcoma( GS), also known as extramedullary myeloblastoma or chloroma is an unusual manifestation and represent soft tissue masses composed of immature cells of the granulocytic series.

• 颗粒性白血球肉瘤也称为骨髓胚细胞瘤或绿色瘤，是一种少见的疾病。