双流率扫描技术在活体肾移植术前供肾血管评估中的应用价值

目的:探讨颅内表皮样囊肿破裂的MRI表现特征。方法:回顾性分析4例经手术病理证实的颅内表皮样囊肿破裂的MRI表现。结果:4例颅内表皮样囊肿均呈混杂T1、混杂T2信号,FLAIR呈混杂信号,DWI呈高信号,增强扫描未见强化。破裂的脂滴均位于蛛网膜下腔内,3例位于脑室内,脂滴均呈短T1、长T2信号,FLAIR呈低信号,DWI上呈低信号,增强扫描均未见强化。其中2例脑室内可见脂肪-脑脊液平面。结论:颅内表皮样囊肿破裂具有特征性MRI表现,MRI对本病的诊断及鉴别诊断具有重要意义。     

中枢神经系统白血病的CT及MRI主要表现

目的 分析经临床证实的11例中枢神经系统白血病的CT及MRI表现,探讨其影像学特征,增进对该病的认识,为临床诊断提供依据.方法 回顾性分析经临床证实的11例中枢神经系统白血病CT及MRI的影像学表现.其中4例CT平扫后行MRI平扫及增强扫描检查;其余7例直接行MRI平扫或平扫+增强扫描检查.结果 ①白血病浸润软脑膜5例,CT表现为脑沟、脑池消失,内可见条状低密度灶,对应MRI表现为T1WI呈低信号,T2WI/FLAIR呈高信号,脑回肿胀,DWI呈稍高信号,增强后明显强化;合并蛛网膜下腔出血1例.②脑实质浸润6例,单发肿块2例,余均为多发,MRI表现T1WI低信号,T2WI/FLAIR高信号,DWI高信号,无明显占位效应,增强后明显强化;其中3例合并出血.③硬脑膜受累1例,累及额部板障,CT表现为软组织密度灶,MRI表现为软组织信号灶,增强后明显强化.结论 中枢神经系统白血病影像学表现有一定的特征性,影像学检查尤其是MRI增强检查有助于对中枢神经系统白血病表现的认识,以及诊断及鉴别诊断.     

脑内型胆脂瘤的MRI表现

目的 探讨MRI对脑内型胆脂瘤的诊断价值.资料与方法 12例经手术病理证实的脑内型胆脂瘤患者行T1WI、T2WI、扩散加权成像(DWI)及增强检查,分析其形态及信号特点.结果 肿瘤主要位于额颞叶,多呈圆形、类圆形,周围均无水肿.12例中T1WI呈不均匀低信号为主混有少量絮状、条片状等信号者7例,呈不均匀低信号为主混有少量高信号者4例,以高信号为主者1例.T2WI均以不均匀高信号为主,混杂少量絮状、条片状等信号.DWI均呈欠均匀高信号.增强扫描内部均未见强化,周边环形轻度强化者3例.结论 脑内型胆脂瘤MRI表现有一定的特征性,MRI对脑内型胆脂瘤诊断及鉴别诊断有重要价值.     

脑实质内胆脂瘤MRI与手术病理对比研究

目的探讨脑实质内胆脂瘤的MRI特征。资料与方法回顾性分析10例经手术和病理证实的脑实质内胆脂瘤的MRI表现,并与手术、病理结果比较。结果 10例病灶均位于脑皮层或皮层下,7例居旁中线区域;形态不规则,边界清晰,7例有完整包膜;6例侵及蛛网膜下腔,其中1例同时侵及侧脑室;质地柔韧,切除后均有少许不等量的清亮液体渗出;包膜菲薄为复层鳞状上皮及少许结缔组织,内容物为不等量、分布不均的上皮碎屑、角蛋白和胆固醇;病灶周围无水肿,占位效应轻;信号不均,侵及蛛网膜下腔者以长T1长T2信号为主,其余4例有更多的等T1、短T1和略长T2、短T2信号;T2 FLAIR均呈高、等、低混杂信号;3例DWI,均呈不均匀高信号;增强后7例无强化,2例见边缘线样轻度强化,1例见内部不完整分隔样轻度强化。结论脑实质内胆脂瘤位于脑表浅部位,形态不规则,信号不均匀,弥散受限而ADC值高,灶周无水肿,不强化或局部轻度强化,需与脑肿瘤、脓肿及寄生虫病相鉴别。     

脑实质内皮样囊肿的影像学表现及相关病理分析

目的探讨脑实质内皮样囊肿的影像学表现,提高对该病的诊断准确率。资料与方法搜集7例经手术病理证实的脑实质内皮样囊肿患者资料,对其CT、MRI表现、病因、病理和临床特征进行分析。7例同时行CT、MRI检查,其中1例行CT增强扫描,3例行MRI增强扫描。结果临床以头痛、癫痫为主要症状,7例中,5例年龄<30岁,其中额叶3例,颞叶2例,顶叶及小脑蚓部各1例。6例CT表现为欠均匀低密度,CT值呈负值具有特征性,1例呈稍高密度,病变边缘见断续的环形或不规则形钙化。6例MRI表现T1WI呈高信号,T2WI呈灰或略高信号,信号不均匀,液体衰减反转恢复(FLAIR)呈混杂信号,1例呈稍长T1、长T2信号,脂肪抑制序列(STIR)高信号脂肪均消失;4例行增强扫描病变无强化;均无瘤周水肿;3例MRA显示周围血管受压移位、僵直。1例CT、MRI可见蛛网膜下腔及左侧脑室前角内散在少量脂肪滴。结论脑实质内皮样囊肿的影像学及临床表现有一定的特征性。MRI诊断优于CT。     

颅内表皮样囊肿的非典型CT和MRI表现

目的 探讨颅内表皮样囊肿的非典型CT和MRI表现,提高对本病的认识.方法 收集经手术病理证实的8例表皮样囊肿,术前均行MRI平扫,其中2例行扩散加权成像(difussion weighted imaging,DWI)检查,CT检查5例.MRI增强扫描4例.结果 8例表皮样囊肿发生于桥小脑角2例,大脑纵裂2例,脑实质2例,颅骨2例.CT显示囊肿表现为均匀高密度2例;混杂密度1例;囊壁及囊内钙化2例.MRI平扫2例T1WI呈均匀高信号,T2WI呈稍高、高信号;3例T1WI和T2WI呈混杂信号;3例T1WI呈不均匀低信号,T2WI呈高信号;其中1例DWI表现为高信号.4例MRI增强扫描显示囊壁显著环形强化和囊内不均匀强化2例,囊壁轻度强化2例.结论 颅内表皮样囊肿的CT和MRI非典型表现主要包括CT呈高密度、混杂密度、囊壁和囊内钙化,MRI T1 WI、T2WI呈高信号、混杂信号,增强扫描显著环形强化,在诊断时应充分结合DWI检查,以提高术前诊断准确性.     

脑实质室管膜瘤MRI表现与病理的相关性研究

目的 探讨脑实质室管膜瘤的MRI与病理的相关性.资料与方法 收集术后病理证实的18例脑实质室管膜瘤,术前均行MRI平扫及增强扫描,分析其MRI表现与病理类型的关系.结果 以囊性为主的肿瘤10例,均位于幕上,肿瘤囊性部分MRI表现为较均匀长T1、长T2信号,肿瘤实性部分呈等及稍长T1、稍长T2信号,其病理类型为室管膜瘤.以实性为主的肿瘤8例,幕上5例实性肿瘤MRI表现为不均匀长或短T1、长或短T2信号,其病理类型为间变型室管膜瘤;幕下3例实性肿瘤MRI表现为稍长、长T1信号,不均匀长及短T2信号,其中2例为室管膜瘤,1例为间变型室管膜瘤.肿瘤增强扫描:15例呈环形强化,3例肿瘤呈不均匀实性强化.结论 多数以囊性为主和实性为主的肿瘤能反映各自的病理类型,其MRI表现各具一定特征.     

脑室毛细胞型星形细胞瘤MR诊断与鉴别诊断

目的探讨脑室内毛细胞型星形细胞瘤(pilocytic astrocytoma,PA)的MRI特征,旨在提高其术前诊断准确率。方法回顾性总结分析8例脑室内PA患者的MRI特征。8例均行MRI平扫及增强扫描。结果 4例PA位于第四脑室,2例位于侧脑室,2例位于第三脑室。实质型1例,囊实型5例,大囊伴小结节型2例。肿瘤实性部分T1WI呈低信号,T2WI呈高信号,扩散加权成像(DWI)呈低信号,表观扩散系数(ADC)均值(1.5±0.15)×10-3mm2/s,增强扫描病灶明显强化。囊实型囊性部分呈长T1、长T2信号,DWI呈低信号,液体衰减反转恢复序列(FLAIR)呈高信号,大囊伴小结节型囊液呈脑脊液样信号。结论脑室内PA的MRI表现具有一定特征,实性部分T2WI呈高信号、DWI呈低信号且显著强化的脑室内肿瘤术前鉴别诊断时应考虑到该病可能。     

颅内海绵状血管瘤的CT和MRI诊断

目的:探讨脑内与脑外海绵状血管瘤的CT和MRI表现及诊断价值.方法:搜集45例颅内海绵状血管瘤的CT和MRI影像资料进行分析,MRI检查45例,CT检查30例,其中脑内型海绵状血管瘤42例,脑外型海绵状血管瘤3例,均经手术病理证实.结果:脑内型海绵状血管瘤可位于脑内任何部位,单发病灶多见,无明显占位效应,周围无或轻度水肿.CT检查的全部病例呈稍高及混杂密度影27例,增强扫描大都无强化;MRI检查T2 WI表现为"桑葚状"混杂高信号,周围有云絮状低信号环,增强后病灶仅少数轻度强化.脑外型病灶位于中颅窝鞍旁,MRI呈类似哑铃形或类圆形较均匀的稍长T1明显长T2信号,增强扫描呈明显均匀强化.结论:脑内与脑外型海绵状血管瘤的CT和MRI表现具有一定特征,MRI优于CT像,特别是MRI的T2 WI像有助于明确诊断.     

颅内软骨瘤的CT与MRI表现(附3例报告及文献复习)

目的 探讨颅内软骨瘤的CT、MRI的特征性表现.资料与方法 搜集经手术病理证实的3例颅内软骨瘤并复习相关文献分析其临床及CT、MRI特点.结果 3例CT表现均为类圆形占位,密度不均匀,其内可见明显点片状钙化,其中2例位于颅底,1例位于大脑镰区,2例相邻骨质侵蚀性破坏.MRI上呈混杂信号,实质部分呈等长T1、长T2信号,钙化部分呈长T1、短T2信号,增强扫描边缘明显环形强化,内部呈“蜂窝”状不均匀强化.病灶常较大,边界清楚,周围无明显水肿.结论 颅内软骨瘤的CT、MRI表现具有一定的特征性,熟悉其影像学表现有助于对该病的诊断.     

成人白血病中枢神经系统并发症的CT与MRI表现

目的 探讨成人白血病中枢神经系统并发症(CNSCL)的CT和MRI表现及其诊断价值.方法 回顾性分析18例经临床及手术病理证实的成人CNSCL的CT和MRI表现,其中急性淋巴细胞白血病7例,急性非淋巴细胞白血病10例,慢性粒单细胞白血病1例.CT平扫11例,其中增强1例;MR平扫16例,其中增强11例.结果 颅内受累14例:(1)颅内出血7例,其中脑内血肿4例,脑内血肿合并微出血1例,微出血2例.脑内血肿均为多发病灶.CT表现为团状高密度影;MRI表现为T1WI低信号或高低混杂信号,T2WI高信号或等高信号伴环状低信号环,病灶呈环形强化或无明显强化.脑微出血在磁敏感加权成像(SWI)上表现为多发斑点状及小条状低信号,其病灶检出率明显优于CT及MRI其他常规序列检查;7例中,伴脑梗死及蛛网膜下腔出血各1例.(2)颅内肿块5例:其中左额部内板下梭形病灶或跨颅板肿块2例,T1WI呈低信号,T2WI呈高低混杂信号,并有明显均匀强化,均见脑膜尾征;鞍区肿块1例,CT示鞍区高密度影,MRI示鞍区T1WI稍低信号,T2WI高信号,有不均匀强化;右侧脑室体旁肿块1例,T1WI、T2WI均呈等信号,有明显均匀强化.左额顶叶壁厚囊性肿块1例,呈环形强化.(3)梗阻性脑积水1例,表现为中脑导水管以上脑室系统扩张.(4)脑膜病变1例,MRI表现为广泛脑膜增厚伴明显均匀强化.椎管内病变4例:其中胸腰椎左侧椎旁软组织肿块2例,侵犯椎管内,伴邻近肋骨骨质破坏1例;椎管内肿块1例,表现为胸椎管后方梭形T1WI等高信号,T2WI等低信号灶,无明显强化;胸髓信号异常1例,表现为胸髓条状T2WI及液体衰减反转恢复(FLAIR)序列高信号影.结论 成人CNSCL影像表现多种多样,CT与MRI对该病的诊断价值相辅相成;白血病患者疑脑内病变者,建议常规使用SWI检查,以尽早发现脑微出血,降低脑内血肿发生的风险.

Abstract：

Objective To evaluate the CT and MRI findings and their diagnostic value of central nervous system complications of leukemia (CNSCL). Methods The CT and MRI findings of 18 adult patients with CNSCL proved by clinical features or pathology were retrospectively analyzed. Among 18 cases,7 were acute lymphocytic leukemia, 10 acute non-lymphocytic leukemia and 1 chronic myelomonocytic leukemia. Eleven cases underwent plain CT scan with one of them also receiving contrast-enhanced CT scan enhancement, 16 cases underwent plain MR scan with 11 of them receiving contrast-enhanced MR scan.Results Intracranial lesions in 14 cases: (1)intracranial hemorrhage was found in 7 cases, including intracerebral hematoma in 4 cases, micro-haemorrhage in 2 cases, and intracerebral hematoma accompanying by multiple intracerebral micro-haemorrhage foci in 1 case. All cases with intracerebral hematoma showed multiple lesions, which demonstrated high-density on CT images, and low or mixed signal on T1 WI, high- or intermediate signal with low-signal rim on T2 WI and ring enhancement or no evident enhancement. Microhaemorrhage manifested as multiple mini-mottling and strip hypointense foci on susceptibility weighted imaging, on which the detection rate of micro-haemorrhage foci was much higher than that on CT and other sequences of MRI. Among the 7 cases, one also had cerebral infarction and one subarachnoid hemorrhage.(2) Intracranial mass was found in 5 cases, among which two appeared as masses under or bestride cranium in the left frontal region with hypointensity on T1 WI, mixed signal on T2WI, strong homogeneous enhancement and dural tail sign;one showed a mass in saddle area, with high density on CT, slightly low signal on T1WI, high signal on T2WI and heterogeneous enhancement; one case displayed a mass near lateral ventricle with iso-intensity on T1 WI and T2WI and strong homogeneous enhancement; and one case manifested as cystic mass in the left fronto-apical lobe, with thick wall and ring enhancement (3)Obstructive hydrocephalus was found in 1 case, manifesting dilation of ventricles above the aquaeductus mesencephali. (4) Meningopathy was found in 1 case, manifesting diffuse thickening of meninges with strong homogeneous enhancement on MRI. Pathological changes of spinal canal was found in 4 cases among which two showed para-spinal mass involving vertebral canal and causing bone destruction of adjacent ribs; one case showed fusiform mass posterior to vertebral canal with high and intermediate signal on T1 WI and low and iso-signal on T2WI without enhancement; one showed zonale leison in thoracic cord with high signal on T2WI and fluid attenuated inversion recovery. Conclusion The radiologic manifestations of adult CNSCL are various and the role of CT and MRI for the diagnosis of CNSCL may complement each other. SWI is suggested as routine examination for patients of leukemia, in whom intracerebral lesions were suspected in order to find micro-haemorrhage as early as possible and reduce the risk of intracerebral hematoma occurrence.     

肾上腺肿瘤的MRI诊断

目的　探讨肾上腺肿瘤的MRI诊断价值。方法　回顾性分析 2 6例经手术病理证实的肾上腺肿瘤的MRI表现 ,并与手术病理对照。所有病例均行MRI平扫及增强扫描 ,观察分析病变的形态大小、边界、信号及强化特征。结果　本组 2 6例肾上腺肿瘤中 ,嗜铬细胞瘤 8例 ,表现为有完整包膜的长T1 混杂T2 信号 ,增强后呈不均匀强化 ,MRI特异性表现为T2 WI呈明显高信号 ,出血、坏死、囊腔形成表现为信号不均匀。转移瘤 5例 ,均为肺癌双侧肾上腺转移 ,形态信号规则或不规则。皮质腺瘤 6例 ,表现为边界清晰的类圆形结节 ,信号均匀 ,无坏死囊变。皮脂腺癌 4例 ,表现为较大不规则长T1 混杂T2 信号 ,不均匀强化 ,伴周围组织血管受侵。髓样脂肪瘤 3例 ,短T1 短T2 (抑脂 )信号为其特征。结论　MRI对肾上腺肿瘤的诊断及鉴别诊断具有重要价值 ,对评价肿瘤与周围结构的关系和制定手术方案具有重要意义。     

FLAIR和DWI序列对颅内胆脂瘤的诊断价值

目的:分析颅内胆脂瘤的MRI信号特点,探讨FLAIR和DWI序列对颅内胆脂瘤的诊断价值。方法:回顾性分析20例经病理证实的颅内胆脂瘤的MRI资料,比较FLAIR、DWI序列与常规T2WI、T1WI在显示病变范围、边界及对比度方面的特点。结果:20例颅内胆脂瘤T2WI均呈显著高信号,边界、范围显示不清,与周围脑脊液对比度差;18例T1WI呈类似于或稍高于脑脊液的低信号,2例T1WI呈高低混杂信号。总体边界、范围显示模糊,与周围脑脊液对比度较差;20例瘤体均无强化。20例FLAIR序列均呈混杂的不均匀信号,总体信号略高于或与脑实质类似,病变范围、边界显示较清晰,与脑脊液对比度好,与周围脑组织对比度差;DWI序列b=1000时均呈明显高信号,病变边界、范围显示清晰,与周围脑脊液及脑组织对比强烈,极易发现病变及确定范围。结论:颅内胆脂瘤的FLAIR和DWI序列均具有其特点,综合T1WI、T2WI序列可以较准确的诊断胆脂瘤,与颅内其他囊性病变鉴别;在显示病变边界、范围、对比度方面均优于T2WI、T1WI,特别是DWI序列病变范围边界显示清晰,对比度高,具有很高的诊断价值。     

颅内表皮样囊肿的MRI诊断

目的;分析颅内表皮样囊肿的ＭＲＩ表现。方法：收集经手术病理证实的颅内表内表皮样囊肿１４例,重点分析肿瘤的好发年龄,部位、ＭＲＩ信号特点及增强情况。结果：在本组病例中,年龄最小１６岁,最大４５岁,平均年龄２８岁,Ｔ１加权像呈低信号（９例）,低,等混杂信号（３例）、高信号（２例）、肿瘤在Ｔ２加权像上均呈高信号,７例行增强均无强化。结论：颅内表皮囊肿具有特征性ＭＲＩ表现。     

中枢神经系统黑色素瘤的影像诊断

目的：分析中枢神经系统黑色素瘤的MRI影像特征。材料和方法：10例中枢神经系统黑色素瘤患者，其中男女各5例，年龄11－59岁。9例病灶位于颅内，其中3例有皮肤黑色素瘤切除史；1例位地颈髓。10例全部行MRI检查，其中4例增强MRI扫描，2例CT平扫。结果：9例MRI均表现为不均－短T1、短T2信号，并在T2WI可见低信号肿块影，另1例显示不均一长T1短T2信号。4例为不均一明显强化，其中1例沿软脑膜转换；2例CT平扫为血肿密度。结论：MRI显示黑色素瘤具有特征性，显示脑膜浸润的范围和程度优于CT。     

急性CO中毒迟发性脑病的MRI表现

目的：探讨急性CO中毒迟发性脑病（DEACMP）的MRI特征。方法：回顾性分析21例急性CO中毒迟发性脑病患者的MRI和临床资料。结果：急性CO中毒迟发性脑病MRI表现可分为3种：①神经核团受累：21例,典型表现为双侧苍白球对称性的长T1、长T2信号;②脑白质受累：11例,表现为双侧大脑半球白质对称云絮状长T1、长T2信号,胼胝体常受累;③皮层受累：6例,表现为双侧大脑半球皮层对称性弥漫长T1、长T2信号。结论：急性CO中毒迟发性脑病MRI表现有一定特征性,MRI对急性CO中毒迟发性脑病的诊断、鉴别诊断、判断预后具有重要价值。     

磁共振扩散加权成像对于颅内表皮样囊肿的诊断价值

目的:探讨磁共振扩散加权成像(DWI)对于颅内表皮样囊肿的诊断价值。方法:回顾性分析11例经手术病理证实的颅内表皮样囊肿术前常规MRI和DWI的信号特征。结果:11例均为单发;7例表现为囊状均匀性长T1长T2信号,4例病灶信号不均匀,以长T1长T2信号为主,其内混杂少许等T1等T2信号;5例行增强扫描均未见异常强化;所有病灶在DWI上均表现为明显高信号,边界清楚,ADC图表现为中等信号。结论:DWI对于颅内表皮样囊肿的诊断及鉴别诊断具有重要价值,应作为首选检查与常规扫描同时应用。     

MR imaging of middle ear cholesteatomas

We prospectively evaluated MR images of 14 patients who had chronic otitis media and who were suspected of having cholesteatomas on otologic examination and/or on high resolution CT. Cholesteatomas were verified in the middle ear and/or mastoid at surgery in nine patients. Cholesteatomas appeared isointense relative to gray matter on T1-weighted spin echo MR images (T1WI) and hyperintense on T2-weighted spin echo MR images (T2WI) in eight patients. Two cholesterol granulomas appeared hyperintense on both T1WI and T2WI. In three patients with chronic otitis media the associated mixed granulation tissue and fluid collection was revealed as nonspecific, heterogeneous signal intensity in two cases. In the third case the signal intensity was similar to that found in cholesteatomas.     

长骨血管瘤的影像诊断

目的 分析长骨血管瘤的影像特征,旨在提高其诊断水平.方法 回顾性分析经手术病理证实的18例长骨血管瘤患者的X线平片(14例)、CT(9例)及MRI(6例).结果 18例长骨血管瘤中髓型10例、骨膜型5例、皮质内型3例.X线表现:髓型8例,其中3例表现为典型的蜂窝状,3例为溶骨性病灶周围骨质硬化明显,单纯溶骨、毛玻璃样密度各1例;骨膜型3例,表现为骨皮质增厚、硬化;皮质内型3例,表现为边界清晰的溶骨性病灶.CT表现:髓型6例,表现为溶骨膨胀型病灶5例,其中3例可见薄厚不一的硬化边,蜂窝状骨嵴影2例,骨皮质呈筛孔状1例,垂直于骨皮质的放射状骨膜增生2例;毛玻璃样密度1例.2例骨膜型表现为骨皮质均匀增厚1例,不规则骨膜增厚1例,局部髓腔狭窄消失.1例皮质内病变表现为病灶呈均匀软组织密度,局部皮质膨胀、增厚.MRI表现:2例显示髓腔内斑片状T1WI稍低信号,T2WI均呈稍高信号,边界清晰;1例T1WI及T2WI均呈等或稍低信号,病灶与正常组织分界不清;1例显示病灶突破局部骨皮质,肿物向外突出,外突肿物及相连髓腔部分T1WI呈稍低信号,T2WI呈高信号;2例显示骨膜增厚,其中1例呈等信号,1例无信号;2例周围肌肉组织内可见不均匀斑片状长T2信号,T1WI与肌肉组织呈等信号.结论 长骨血管瘤的囊性蜂窝状X线表现较为特征型;CT及MRI有助于长骨血管瘤的诊断.

Abstract：

Objective To explore the imaing features of hemangioma in the long bone and improve the diagnostic level of this disease. Methods The X-ray(14 cases), CT(9 cases) and MRI(6 cases)findings of 18 patientswith histologically proven hemangioma in the long bone after surgery were retrospectively reviewed. Results Ten tumors occurred in medullary cavity or bone end(medullary type),6 on the surface of bone (periosteal type) and 3 in cortex (intracortical type). X-ray findings: among 8 cases of medullary type, 3 showed honeycomb appearance, 3 lytic areas with sclerotic borders, one purely osteolyticchanges, and 1 frosted glass; 3 cases of periosteal type showed sclerosis and thickening of the underlying cortex; 3 cases of intracortical type showed well-defined osteolytic foci. CT findings: among 6 cases of medullary type, 5 appeared as expansile lytic lesion with uneven selerotic rim (3 cases)orhoneycomb appearance (2 cases), 1 cribriform appearance in the cortical bone, 2 periostealnew bone formation in vertical radiation pattern; 1 ground-glass appearance; among 2 cases of periosteal typeone showed regular cortical thickening, and the other irregular periosteal proliferation with marrowing of medullarycavity; 1 case of intracorticaltype showed density similar to that of soft tissue, with cortical thickening and expansion . MRI findings: 2 apeared as well-defined lesions with low signal intensity on T1WI and high signal intensity on T2WI; 1 appeared as ill-defined lesion with low to intermediate signal intensity on T1 WI and T2 WI. One showed breakthrogh of cortex and formation of soft tissue mass with low signal intensity on T1 WI and high signal on T2WI. Two showed thickening of periosteumwith intermediate signal intensity in one of them and very low signal intensity in the other. Two showed abnormal signal intensity in surrounding muscles, which was high on T2 WI and intermediate on T1 WI. Conclusions The soap-bubble or honeycomb appearance is the typical radiographic finding of hemangioma in long bone. CT and MRI can provide useful information for the diagnosis of hemangioma in long bone.