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目的分析上颌窦炎性肌纤维母细胞瘤的CT和MRI表现,提高对该病的诊断及鉴别诊断能力。方法回顾性分析经病理证实的8例上颌窦炎性肌纤维母细胞瘤的影像学表现。5例行CT检查,3例行MRI检查。结果病变位于左侧上颌窦5例,右侧上颌窦3例。4例占据整个窦腔,4例占据部分窦腔。CT平扫上4例肿物密度不均匀,1例密度均匀,1例病灶内可见钙化。T1WI上病灶呈稍低信号改变,T2WI上呈等、稍高信号改变,均伴有上颌窦窦壁的骨质破坏,并侵犯鼻腔、眼眶、颞下窝等组织结构,7例增强后呈轻、中度不均匀强化。结论 CT、MRI检查可帮助明确诊断、确定肿瘤范围及与相邻组织解剖关系,对确定手术的可切除性有重要价值,但确诊仍需病理。
Objective To analyze CT and MRI findings of maxillary sinusitis myofibroblastoma and to improve the ability of diagnosis and differential diagnosis of the disease. Methods The imaging findings of 8 cases of maxillary sinusitis myofibroblastoma confirmed by pathology were analyzed retrospectively. 5 routine CT examination, 3 routine MRI examination. Results The lesions were located in the left maxillary sinus in 5 cases, the right maxillary sinus in 3 cases. 4 cases occupy the entire sinus, 4 cases occupy part of the sinus cavity. On the CT scan, the density of the tumor in 4 cases was uneven, one case had uniform density, and one case showed calcification. T1WI lesion showed a slightly lower signal change, T2WI showed a slightly higher signal changes are associated with the destruction of the maxillary sinus wall of the bone destruction and infiltration of the nasal cavity, orbital, infratemporal fossa and other organizational structures, enhanced in 7 cases was light , Moderately uneven enhancement. Conclusion CT and MRI can help confirm the diagnosis, determine the scope of the tumor and the anatomic relationship with the adjacent tissues. It is of great value in determining the resectability of the operation, but the pathological diagnosis is still needed.