中国实用医刊
中國實用醫刊
중국실용의간
CENTRAL PLAINS MEDICAL JOURNAL
2011年
9期
25-28
,共4页
颅内%生殖细胞瘤%体层摄影术,X线计算机%磁共振成像
顱內%生殖細胞瘤%體層攝影術,X線計算機%磁共振成像
로내%생식세포류%체층섭영술,X선계산궤%자공진성상
Intracranial%Germinoma%Tomography,X-ray computed%MRI
目的 探寻颅内生殖细胞瘤的CT和MRI特点.方法 回顾性分析18例经病理或放疗证实的颅内生殖细胞瘤患者的CT和MRI表现.结果 18例颅内生殖细胞瘤患者中,9例位于松果体区,3例位于基底节区及丘脑,6例位于鞍区.松果体区肿瘤MRI呈长T1、等或长T2信号,边缘光滑,出血少见,CT呈均匀等密度或稍高密度,松果体钙化常被肿瘤包埋,增强呈均匀显著强化.鞍区肿瘤垂体柄增粗,垂体后叶正常短T1信号消失,肿瘤T1WI呈等信号,T2WI上信号可以表现为等或高信号,CT上肿瘤实体部分呈高密度,增强扫描有明显强化.基底节及丘脑肿瘤,瘤体较大,信号及密度不均匀,边缘欠清晰,出血多见,增强呈不均匀强化.结论 颅内生殖细胞瘤影像学表现具有一定的特征性,结合临床表现可进一步提高诊断正确率.
目的 探尋顱內生殖細胞瘤的CT和MRI特點.方法 迴顧性分析18例經病理或放療證實的顱內生殖細胞瘤患者的CT和MRI錶現.結果 18例顱內生殖細胞瘤患者中,9例位于鬆果體區,3例位于基底節區及丘腦,6例位于鞍區.鬆果體區腫瘤MRI呈長T1、等或長T2信號,邊緣光滑,齣血少見,CT呈均勻等密度或稍高密度,鬆果體鈣化常被腫瘤包埋,增彊呈均勻顯著彊化.鞍區腫瘤垂體柄增粗,垂體後葉正常短T1信號消失,腫瘤T1WI呈等信號,T2WI上信號可以錶現為等或高信號,CT上腫瘤實體部分呈高密度,增彊掃描有明顯彊化.基底節及丘腦腫瘤,瘤體較大,信號及密度不均勻,邊緣欠清晰,齣血多見,增彊呈不均勻彊化.結論 顱內生殖細胞瘤影像學錶現具有一定的特徵性,結閤臨床錶現可進一步提高診斷正確率.
목적 탐심로내생식세포류적CT화MRI특점.방법 회고성분석18례경병리혹방료증실적로내생식세포류환자적CT화MRI표현.결과 18례로내생식세포류환자중,9례위우송과체구,3례위우기저절구급구뇌,6례위우안구.송과체구종류MRI정장T1、등혹장T2신호,변연광활,출혈소견,CT정균균등밀도혹초고밀도,송과체개화상피종류포매,증강정균균현저강화.안구종류수체병증조,수체후협정상단T1신호소실,종류T1WI정등신호,T2WI상신호가이표현위등혹고신호,CT상종류실체부분정고밀도,증강소묘유명현강화.기저절급구뇌종류,류체교대,신호급밀도불균균,변연흠청석,출혈다견,증강정불균균강화.결론 로내생식세포류영상학표현구유일정적특정성,결합림상표현가진일보제고진단정학솔.
Objective To explore CT and MRI appearances of intracranial germinoma. Methods Eighteen patients with intracranial germinoma confirmed histologically and radiotherapy were selected as the object of this study. CT and MR findings of germinoma were analysed retrospectively. Results In 18 cases, the tumors were located at pineal region in 9 cases, the basal ganglia and thalamus in 3 cases and the sellar region in 6 cases. Germinoma of pineal region showed low signal intensity on T1WI, iso or hyperintense on T2WI, isodense or slightly hyperdense on CT with definite margin, the pineal calculus were embedded frequently by tumors. After administration of contrast material, the tumors showed marked and uniformity enhancement. Thickness of pituitary stalk and absence of the hyperintensity of the posterior pituitary on T1WI were found in sellar germinoma. Tumors showed isointensity on T1WI, but variable signal intensity was exhibited on T2WI. Calcification was absent in all cases, but the solid components of tumors were hyperdense on plain CT, and they were obvious enhancement on contrast-enhanced images. Germinoma located at basal ganglia and thalamus showed larger volume of tumors, inhomogeneous signal intensity and density with indefinite margin, hemorrhage seen in most of case. After administration of contrast material, the tumors showed patch or chaplet-like enhancement. Conclusions It is possible to make the preoperative diagnosis for intracranial germinoma according to sex, age and CT,MR imaging characteristics.
