【摘要】 腹膜后炎性肌纤维母细胞瘤（IMT）是一种罕见的间叶源性肿瘤,临床表现及影像学表现均缺乏特异性。腹膜后IMT的影像特征包括体积大,浸润生长,有渗出征象,部分患者还可伴有腹膜增厚、粘连及腹腔积液。增强CT表现多为不均匀延迟强化,且多数可见小血管穿行。在¹⁸F-FDG PET/CT显像中,病灶呈¹⁸F-FDG较高摄取。腹膜后IMT术前较易误诊,但熟悉其临床表现及影像特征有助于提高其诊断准确率。更多还原

【Abstract】 Retroperitoneal inflammatory myofibroblastic tumor （IMT） is a rare mesenchymal tumor with a lack of specificity in clinical and imaging manifestations.The imaging features of retroperitoneal IMT include large volume,infiltrating growth,and signs of exudation.Some patients may also have peritoneal thickening,adhesions,and peritoneal effusion.Enhanced CT manifestations are mostly uneven delayed enhancement,and most of them shows blood flowing through small blood vessels.In ¹⁸F-FDG PET/CT imaging,the lesion showed a higher ¹⁸F-FDG uptake.Retroperitoneal IMT is more likely to be misdiagnosed before surgery,but familiarity with its clinical manifestations and imaging features can help improve its diagnostic accuracy.更多还原