髓内神经鞘瘤的MRI表现(附5例报告)

目的 探讨髓内神经鞘瘤的MRI表现,提高对该病的认识.资料与方法 回顾性分析经手术病理证实的5例髓内神经鞘瘤患者的临床和影像学资料.结果 4例肿瘤位于颈髓,1例位于胸髓.MRI 表现为类圆形或梭形的实性肿块,T1 WI呈等或稍低信号,T2WI呈等、稍高或稍低信号,肿瘤边界清楚,增强扫描肿瘤明显强化,且强化较均匀.结论 髓内神经鞘瘤常发生于颈髓,当颈髓内发生一边界清楚、增强扫描呈明显、较均匀强化的肿瘤时,应考虑到神经鞘瘤的可能,若同时可见明显的髓外部分或与肿瘤相连的神经根增厚,则应高度怀疑髓内神经鞘瘤.     

髓内神经鞘瘤1例报告

髓内神经鞘瘤比较少见,我们遇到1例,经手术,病理证实,报道如下。女,2岁,因颈部疼痛伴右侧肢体无力8个月于1986—11—24入院。检查:发育正常,颅脑五官、心肺腹未见异常,颅神经正常。腹壁反射对称存在。右上肢肌力Ⅲ级,腱反射亢进。右下肢肌力Ⅲ级,膝腱反射亢进。右侧肢体无明肌肉萎缩。左侧肢体无异常。两侧巴氏征     

脑实质神经鞘瘤的MRI诊断(附5例报告)

目的 探讨脑实质神经鞘瘤的MRI表现.资料与方法 回顾性分析5例经手术病理证实的脑实质神经鞘瘤患者的MRI资料,并结合文献讨论.结果 5例肿瘤均位于幕上,额叶及顶叶各2例,颞叶1例;4例呈囊性伴壁结节,另1例以实质性为主;MRI增强扫描壁结节或实质部分明显强化;5例均伴有瘤周水肿.结论 脑实质神经鞘瘤好发于青少年,幕上脑表浅部位多见,伴囊变和瘤周水肿是其较特征性的MRI表现,最终诊断依赖于病理组织学检查.     

腹膜后神经鞘瘤(附1例报告)

腹膜后神经鞘瘤为少见病,2005年4月我院收治1例,现结合文献复习报告如下。1病例病人,男,37岁。间断性右上腹痛10年,无其他伴发症状,可自行缓解。CT扫描提示:胰头后方、腔静脉与腹主动脉间见一类圆形软组织影,直径近3cm,边界清晰,注入造影剂后逐渐强化,延迟后密度仍较高;周围未见肿大淋巴结。入院后经术前准备,在全麻下行腹膜后肿瘤切除术。术中见:肿瘤位于胰头后腹主动脉旁,肠系膜上动脉的右侧,下腔静脉及左肾静脉前方,3cm×4cm大小为类圆形实性肿物,边界清,包膜完整。术后病理:腹膜后神经鞘瘤。术后随访半年,无复发。2讨论2·1概况神经鞘…     

髓内神经鞘瘤1例

<正>病人,女,67岁,因"双上肢麻木感5年,双下肢麻木感4年,加重10个月"入院。患者于人院前5年出现双上肢麻木感,以右上肢为重,未予特殊检查及治疗。查体:意识清楚,精神良好,言语流利,右利手,定向力、理解力、判断力、计算力、记忆力等基本正常。头颅无畸形,粗测双耳听力及嗅觉基本正常,眼球运动正常,无眼震,眼睑无下垂,双侧瞳孔约2.5 mm,直间接对光反射灵敏,粗测视力视野基本正常。双侧额纹对称,鼻唇沟无变浅,双侧面部皮肤     

舌下神经鞘瘤的CT及MRI表现(附1例报告并文献复习)

神经鞘瘤是起源于许旺氏细胞的一种良性肿瘤,颅神经鞘瘤多发于颅神经的感觉支,包括听神经,前庭神经和三叉神经,起源于运动神经的神经鞘瘤罕见,舌下神经为运动神经,舌下神经鞘瘤罕见[1],最早于1933年由De Martel等报道[2].本文回顾分析1例舌下神经鞘瘤的临床和影像学表现,并复习相关文献.     

皮下良性神经鞘瘤的MRI表现(附5例报告)

目的:探讨皮下良性神经鞘瘤的MRI表现。方法:回顾性分析经手术病理证实的5例良性皮下神经鞘瘤的MRI表现。结果:肿瘤表现为皮下渐进性缓慢增大包块,活动度可,呈类圆形或梭形改变,边界清楚;病灶与神经主干或主要分支无关;T1WI表现为等低混杂信号,T2WI表现为等高混杂信号影,可见"靶征"2例,T2WI上见薄的高信号边缘1例。结论:MRI表现为皮下边界清晰高低混杂信号影、"靶征"或T2WI上薄的高信号边缘,以及临床表现有助于皮下良性神经鞘瘤的定性诊断。     

椎管内神经鞘瘤的MRI诊断(附15例分析)

目的评价MRI对椎管内神经鞘瘤的诊断价值。材料与方法15例经手术、病理证实的病例,回顾性分析其MRI表现。结果椎管内神经鞘瘤MRI表现椎管内圆形、卵圆形或不规则形肿块,部分呈哑铃状;肿瘤在T1加权像上呈低信号或略低信号,T2加权像呈高信号,注射GD-DTPA后肿瘤呈均匀性强化,液化坏死区不强化,肿瘤边界清晰。结论MRI对椎管内神经鞘瘤具有独特的诊断优势。     

3.0T MRI对四肢神经鞘瘤的诊断价值(附12例报告)

目的 分析3.0 T MRI对四肢神经鞘瘤的诊断价值.方法 回顾性分析12例经手术和病理证实的四肢神经鞘瘤病例资料,12例行MRI平扫,6例行MRI增强.总结四肢神经鞘瘤的MRI表现.结果 病灶位于大腿5例,小腿后部1例,踝关节后部1例,前臂2例,肘部1例,上臂1例,手掌1例.单发10例,多发2例,12例共14个病灶.14个病灶均位于四肢肌间神经血管束走行区内,表现为沿神经干走行的梭形或椭圆形肿块(14/14),“靶征”(12/14),“神经出入征”(12/14),“脂肪分离征”及“脂肪尾征”(14/14).T1WI病灶呈等或稍高信号.T2 WI呈不均匀高信号,12个病灶见靶征.增强后4个病灶见靶征；2个病灶不均匀强化；1例呈环状强化.14个病灶均包膜完整.结论 沿神经干走行的梭形或椭圆形肿块、“神经出入征”、“靶征”、“脂肪分离征”和“脂肪尾征”是MRI四肢神经鞘瘤的特征性表现,MRI对四肢神经鞘瘤的诊断和治疗具有重要价值,是四肢神经鞘瘤的首选检查方法.     

脊髓髓内神经鞘瘤1例

神经鞘瘤是椎管内最常见肿瘤,占椎管内肿瘤40％,其好发部位为髓外硬膜下或硬膜内外,但位于脊髓内者少见,而发生于腰段脊髓内更为罕见。术前影像学检查常误诊,为提高对本病的认识及诊断水平,我院最近诊断1例髓内神经鞘瘤,结合国内外文献,现总结报告如下。     

纤维骨性假瘤的诊断与鉴别诊断（附1例报告并文献复习）

纤维骨性假瘤(fibro-osseous pseudotumor,FP)是一种好发于指/趾的罕见良性病变,本文拟对1例足趾 FP 行回顾性分析并结合国内外文献进行探讨。     

MR findings of a primary intramedullary malignant melanoma: case report and literature review.

A case of primary malignant melanoma of the conus medullaris depicted at MR imaging is presented. Tumoral histoimmunologic analysis revealed features of malignant melanoma. Because findings for primary melanoma outside the spinal cord were negative, the diagnosis of primary intramedullary malignant melanoma was established. This rare tumor should be suspected when T1-weighted images show signal hyperintensity and T2-weighted images show signal iso- or hypointensity, with mild contrast enhancement of the lesion. However, these features may vary depending on intratumoral bleeding and melanin content.     

蜡泪样骨病1例报告及文献回顾

患者 女,35岁,左手背肿胀,活动后疼痛6个月.患者一般情况良好,否认家族遗传病史,实验室检查血常规,C反应蛋白及血沉均(一).影像学表现:左肱骨、左侧尺桡骨及左手X线平片见左侧肩胛骨体部及喙突及左侧肱骨全段偏桡侧、桡骨、舟骨、大多角骨及小多角骨、第1掌指骨及第2掌骨骨皮质不均匀性增厚硬化,骨质密度明显增高,髓腔变窄,部分消失,骨干明显增粗,外形呈波浪状改变,病变与正常骨结构分界清晰,周围软组织未见明显肿胀(图1～3).MSCT显示左侧肱骨骨干增粗,偏外侧骨皮质明显增厚硬化,病变累及骨皮质内外,骨髓腔变窄,部分消失,病灶与正常骨质分界清晰,左侧肩胛骨喙突骨质密度均匀增高硬化(图4,5).影像学诊断:蜡泪样骨病.     

SAPHO综合征1例报道及文献综述

SAPHO综合征是累及骨、关节及皮肤的一系列病变的总称.骨关节病变没有特异性,易与其他疾病发生混淆.为加深对SAPHO综合征的认识.更好地做出早期正确诊断,本文报道了一例SAPHO综合征,并对其临床及影像学表现做了综述.     

肾类癌1例报告并文献复习

患者 男,53岁.因“右侧腰背部胀痛10余天”入院.右侧腰腹部可扪及8 cm×10 cm大小包块,质硬,不活动,无压痛.彩超示:右肾上极稍强实质性包块8.3 cm×8.2cm,边界清楚,形态规则;考虑右肾实质性包块.CT显示:右肾中上份见大小约为92 mm×85 mm×82 mm稍低密度影,边界欠清;其密度不均,CT值约38 HU;内见钙化影(图1).增强后各期呈轻度不均匀强化,CT值约49 HU;强化程度均低于肾实质(图2～4).CT诊断:右肾中上份肿瘤性病变.手术见右肾上极一大小约9 cm×8 cm×7 cm肿块,质硬,活动度小,表面血管曲张.行右肾根治性切除术.病理:右肾切面见一球形肿物,直径8 cm,累及肾脏中上极及肾门,肾窦结构不清(图5).     

胎儿骨残留宫腔的MRI诊断(附1例报道并文献复习)

胎儿骨残留宫腔是一种自然流产或人工流产后少见的并发症[1],患者常因继发不孕或慢性盆腔疼痛[2-6]而就诊.现有文献报道的胎儿骨残留宫腔多由超声或宫腔镜诊断,而有关其MRI表现少有提及.笔者遇到1例胎儿骨残留宫腔30余年的患者,就其MRI表现进行讨论.     

MR imaging of uterine adenosarcoma: case report and literature review

We report a case of uterine adenosarcoma demonstrated on magnetic resonance (MR) imaging. A 74-year-old woman with a large uterine mass underwent MR examination before total abdominal hysterectomy. Imaging revealed a markedly enlarged uterus with thin myometrium occupied by a large polypoid mass. The mass contained solid components with low intensity on T(1)-weighted images and high intensity on T(2)-weighted images compared to the myometrium and areas of small cysts.     

MRI of intramedullary spinal schwannomas: case report and review of the literature

Intramedullary spinal schwannomas are uncommon. We report a solitary cervical intramedullary schwannoma shown by MRI and treated surgically, and review 12 previous cases with MRI. MRI findings and pathogenesis are discussed. Received: 22 March 1999 Accepted: 2 August 1999     

Gastric haemolymphangioma: a literature review and report of one case

Gastric haemolymphangioma is a very rare benign tumour. Pathologically, it is composed of lymphatic vessels and blood vessels. Only a few cases of haemolymphangioma have been reported in the literature so far, all of which developed at sites other than the stomach. The authors believe that a haemolymphangioma occurring in the stomach has not been previously reported. The patient was a healthy 68-year-old male who had felt light epigastric discomfort for 3 months. A CT scan and a gastrofiberscope examination revealed a well-demarcated mass on the posterior wall of the stomach near the lesser curvature. The mass was successfully removed by surgery. During the 18-month follow-up period, the patient was asymptomatic with no recurrence. In this case report, we discuss the imaging findings as well as the pathological features of this unusual case, with a review of the related literature.