炎性肌纤维母细胞瘤(IMT)是一种少见而独特的间叶性肿瘤,表现低度恶性或交界性肿瘤特点,近年来WHO提出此命名,已逐渐得到广泛认同[1]。IMT多发生于肺,也见于头颈、躯干、内脏及四肢软组织。因发病率低,临床及影响学表现为侵袭性占位性病变,组织形态变化多样,极易误诊为恶性肿瘤 Inflammatory myofibroblastic tumor (IMT) is a rare and unique mesenchymal tumor characterized by low-grade malignancy or borderline tumor. In recent years, WHO has proposed this nomenclature gradually and widely accepted [1]. IMT occurred in the lungs, but also found in the head and neck, trunk, internal organs and limb soft tissue. Due to the low incidence of clinical and influential performance of invasive space occupying lesions, changes in tissue morphology, easily misdiagnosed as malignant tumors