CAJ | 학술논문

目的：血管周细胞瘤（Hemangiopericytoma ，HPC）较少发生于颅内，分析颅内 HPC的MRI表现特征，有利于提高对此种肿瘤的认识。方法分析6例经手术病理证实的颅内H PC的临床和影像资料，6例均行M RI平扫及增强扫描，其中男性4例，女性2例，年龄32～58岁，平均41岁。结果本组6例中2例肿瘤发生于桥小脑角区，3例发生于脑实质，1例发生于脑室内，肿瘤体积均大于3cm ，边界清，均呈多分叶状，脑外病灶T1 WI、T2 WI信号均匀，增强明显均匀强化，脑内病灶T1 WI呈稍高信号、T2 WI呈稍高混杂信号，脑室内病灶接近或稍低于脑白质。注射对比剂后，6例均表现明显强化，内见点片及条状低强化灶，其中2例脑实质肿瘤内见弯曲条状低强化灶。结论颅内 H PC少见，M RI形态及增强表现较有特征性，总结M RI表现，可提高术前诊断准确性。
목적：혈관주세포류（Hemangiopericytoma ，HPC）교소발생우로내，분석로내 HPC적MRI표현특정，유리우제고대차충종류적인식。방법분석6례경수술병리증실적로내H PC적림상화영상자료，6례균행M RI평소급증강소묘，기중남성4례，녀성2례，년령32～58세，평균41세。결과본조6례중2례종류발생우교소뇌각구，3례발생우뇌실질，1례발생우뇌실내，종류체적균대우3cm ，변계청，균정다분협상，뇌외병조T1 WI、T2 WI신호균균，증강명현균균강화，뇌내병조T1 WI정초고신호、T2 WI정초고혼잡신호，뇌실내병조접근혹초저우뇌백질。주사대비제후，6례균표현명현강화，내견점편급조상저강화조，기중2례뇌실질종류내견만곡조상저강화조。결론로내 H PC소견，M RI형태급증강표현교유특정성，총결M RI표현，가제고술전진단준학성。
Objective Hemangiopericytoma (HPC) is rare intracranial tumor .The purpose of this work was to analyze the MRI features of intracranial HPC so as to improve the understanding of this kind of tumor .Methods The clinical and imaging data of 6 intracranial HPC patients proved by operation and pathology were analyzed retrospectively .All cases (4 males ,2 females ,aged 32 to 58 years old ,with an average age of 41) underwent plain and enhanced MRI scan .Results In our 6 cases ,tumors were located in the cerebellopontine angle (2 cases) ,brain parenchyma (3 cases) ,and ventricle (1 case) .All of the tumors manifested as lobulated masses larger than 3 cm with clear boundary .Lesions outside the brain parenchyma were uniform on T1WI ,T2WI and enhanced homogeneously .Intraparenchymal lesions were shown slightly high signal on T1 WI and slightly high ,mixed signal on T2 WI .The signal of tumor in ventricle was slightly lower than the cerebral white matter .After injection of contrast agent ,all of 6 cases showed obvious enhancement with punctate and striped low density areas ,including 2 cases of tumors in the brain parenchyma with crooked striped low density areas . Conclusion Intracranial HPC is rare .MRI morphology and enhanced manifestations are characteristics .Therefore ,sum‐marizing the M RI features can improve the preoperative diagnostic accuracy .