这例中枢神经淋巴瘤不典型,怎么办?

2018-06-25 赵桂宪大夫 赵桂宪

头颅MRI示颅内病灶较前扩大,为进一步诊治,来院门诊,拟“颅内多发病变性质待查”收住院。

病史简介

患者男性,64岁,右利手,农民。

主诉:头痛1个半月,记忆力减退1月

现病史:患者于入院前1个半月无明显诱因出现头昏不适,当天夜间突然出现头痛,为双侧颞部剧烈针刺样痛,伴乏力不能行走,休息后有所好转,次日自行开车至当地医院查头颅CT平扫未见明显异常,EEG示脑电图正常范围,住院予活血对症等处理后头昏好转出院,仍觉乏力、思睡。

1月前上旬出现午后低热、畏寒,浑身酸痛,思睡,渐出现不认识路和家人,记忆力减退,不记得上一餐所吃东西,不能自己开车,看电视不会用遥控器换台。至某医院查头颅MR示左侧侧脑室旁片状异常信号,增强后无明显强化。外院以“病毒性脑膜脑炎”,予阿昔洛韦抗病毒、地塞米松10mg抗炎及脱水降颅压等治疗,病情好转出院,仍觉头昏乏力。

1周前患者出现随地小便,有发热,T38.2℃,至当地医院住院继续使用地塞米松10mg ivgtt qd等治疗,2天后复查头颅MRI示颅内病灶较前扩大,为进一步诊治,来我院门诊,拟“颅内多发病变性质待查”收住院。

既往史:无殊。

个人史:饮白酒30余年,每天7-8两。不吸烟。


图1:入院前1月半行颅脑CT平扫:未见明显异常。


图2:入院前1月颅脑MRI平扫+增强:左侧侧脑室旁片状异常信号,增强后无明显强化。

入院时体格检查:内科查体无殊。神经系统查体:神清,短时记忆减退,100-7=93,-7=84,时间、地点定向力减退,颅神经阴性,颈软,四肢肌力、肌张力正常,腱反射+,左侧掌颌反射+,右侧Chaddock’s征(+),Babinski’征(—)。双侧针痛觉对称正常,共济运动可。

入院后完善相关化验检查:自身抗体、自免脑抗体谱(血、脑脊液):均阴性。AQP-4IgG阴性。甲状腺功能:促甲状腺素受体抗:<0.300IU/L,T3、T4、FT3↓。 神经元抗原谱:CV2.1(++),其余阴性。EBV-DNA:3*103。入院后第一次腰穿(7.3):压力130mmH20,CSF常规、生化:正常。IgG Index 0.54,血清和CSF均可见OB。

诊疗经过

患者男性,64岁,亚急性起病,头痛1个半月,记忆力减退1月,神经系统查体:神清,短时记忆力、计算力、时间、地点定向力减退,颅神经阴性,颈软,四肢肌力正常,腱反射+,右侧Chaddock’s征(+)。颅脑磁共振可见左侧颞顶枕近皮层及左侧脑室枕角旁片状异常信号影,病灶未见强化。诊断首先考虑炎性病变可能大。患者在入院后予激素冲击治疗(甲强龙 1g ivgtt qd,每3天减半),并予丙球0.4/kg/d,冲击5天。治疗过程中,患者认知功能进行性下降,淡漠,少动懒言,小便时有失禁。因神经元抗原谱:CV2.1(++),为排除自身免疫性脑炎行PET检查提示大脑皮层及小脑皮层FDG代谢弥漫性减低,双侧壳核及丘脑(右侧丘脑明显)及胼胝体压部FDG代谢相对增高,考虑良性改变。复查磁共振可见颅内病灶有进行性增大的趋势但病灶始终未见病灶有强化,诊断陷入困境。


图3:入院后1周颅脑MRI平扫+增强:左侧颞顶枕近皮层及左侧脑室枕角旁片状异常信号影,病灶未见强化。


图4:PET提示:左侧颞顶枕近皮层及左侧脑室枕角旁片状稍低密度影未见FDG代谢异常增高;大脑皮层及小脑皮层FDG代谢弥漫性减低,双侧壳核及丘脑(右侧丘脑明显)及胼胝体压部FDG代谢相对增高,考虑良性改变。

入院后3周复查腰穿:颅压大于300mmH20,常规、生化:均正常。脑脊液脱落细胞提示脑脊液中可见一些体积较大,胞浆蓝染、具有核分裂相、有核仁的细胞,背景可见大量转化型淋巴细胞,考虑淋巴造血组织来源的肿瘤细胞。复查颅脑磁共振提示病灶范围较前明显增大,胼胝体压部、左侧颞叶和右侧基底节区强化病灶。结合脑脊液考虑淋巴瘤可能大。


图5:脑脊液脱落细胞检查:800转/分,离心涂片,瑞氏染色,X100,镜下可见少量异型细胞,该类异型细胞胞体较大,直径28-30μm,胞浆丰富,色蓝,胞核呈多形性,染色质疏松,可见核仁,并可见其分裂型。


图6:入院后2周复查颅脑MRI增强:病灶范围较前明显增大,胼胝体压部、左侧颞叶和右侧基底节区强化病灶。

治疗上加强脱水,在家属积极配合下请神经外科导航下以右侧胼胝体为穿刺位点行穿刺活检术。


图7:术前复查颅脑MRI平扫+增强:病灶范围较前明显增大,胼胝体压部、左侧颞叶和右侧基底节区强化病灶。


图8:导航下穿刺活检术穿刺靶点的选择:选择常规MRI强化最明显、同时MRS提示Cho/NAA比值最高(4.879)的感兴趣区(胼胝体压部强化区域)作为导航下穿刺活检术的穿刺靶点,黄色十字架为穿刺针尖方位。


图9:病理图片说明:瘤细胞片状分布,或围绕血管排列,核浆比例高,见核分裂象,伴灶性坏死。L26示胞浆阳性。MIB-1高表达。

石蜡切片病理结果为恶性B细胞淋巴瘤免疫酶标结果:CD3(-),Ki67(30%+),C-myc(+),L26(+),PAX-5(+),Bcl-6(+),MUM1(+),CD10(-)转入血液科治疗,因患者病理提示c-myc和bcl-6双表达,故预后欠佳。转入血液科后,考虑患者当时一般状况差,昏迷状态,呼吸、心率快,复查颅脑MRI提示中脑、左侧海马、胼胝体压部、双侧基底节区病灶强化病灶,符合PCNSL影像学表现。给予了MTX 4g d1+Dex 15mg d1-3化疗,次日,患者出现双瞳不等大,双侧对光反射迟钝,予对症处理后症状无好转,并出现双侧瞳孔散大,光反射消失,第三天出现呼吸循环衰竭,家属要求自动出院。

讨论:

原发性中枢神经系统淋巴瘤(PCNSL)是指原发于脑、脊髓、眼或软脑膜的淋巴瘤,大多数PCNSL为B细胞起源。PCNSL占脑肿瘤的3%,95%以上为弥漫大B细胞淋巴瘤(DLBCL)。好发于50?70岁者,起病至就诊时间多在2?3个月以内。PCNSL患者主要表现为精神状态的改变、颅内压增髙如头痛、恶心呕吐及视乳头水肿以及局部压迫症状,包括癫痫、记忆力减退、行走不稳、视野障碍、言语模糊以及轻度偏瘫。

由于PCNSL是一种复杂而“狡猾”的肿瘤,早期诊断往往存在很大的困难,颅脑影像学检查对于PCNSL临床诊断与鉴别诊断具有重要作用。PCNSL的影像学检查具有一定特点,但影像学检查有其局限性,尤其不典型病例难以与其他颅内肿瘤及疾病相鉴别,对于影像学提示PCNSL患者,需行立体定向活检等检查进行确诊。

导航下穿刺活检术是明确诊断最有效的方法,有报道活检的敏感性在90%以上,值得注意的是,检查前尽量避免使用糖皮质激素以免降低检出率。

在某些情况下,由于病变的位置而无法进行活检。由于PCNSL是一种髙侵袭性肿瘤,脑脊液细胞病理学等检查是PCNSL的辅助诊断措施之一。本项检查前要仔细评估,对于颅内压增髙患者要慎重,腰椎穿刺可能导致脑疝等并发症。

本例患者的诊疗经验:

1.本例患者与以往看到的原发性中枢神经系统淋巴瘤不同,主要有以下几点:①患者的临床过程不典型,病程中对激素不敏感,第一次激素治疗后症状有好转,10天后即加重,以后激素冲击治疗均未见症状减轻,反而加重,属原发激素耐药的中枢神经系统淋巴瘤。尚存疑的是:患者查EBV-DNA:3*106,高于正常上限,是否EB病毒感染对患者激素敏感性有影响?②患者的影像学表现:早期将近2个月的时间颅内病灶进行性增加,但病灶始终未见强化,在入我院后半月,即从发病起2个月后病灶开始出现胼胝体压部的部分强化,仍未见团块样、结节样典型淋巴瘤的强化病灶,之后短时间内病灶迅速进展,强化病灶在左侧颞叶、右侧基底节区内囊前肢及胼胝体压部均出现强化,才开始出现淋巴瘤的特征性改变,之后短期内病灶持续进展,显现了典型淋巴瘤的磁共振表现;③患者在病情迅速进展时行18FDG-PET示大脑皮层及小脑皮层FDG代谢弥漫性减低,与以往所见淋巴瘤亦有不同,以上几点提醒我们,对淋巴瘤的表现的认识还需我们对临床病例细致地观察和不断地总结。

2.患者脑脊液脱落细胞的检测阳性加速了穿刺活检的决策时间,从而提示:脑脊液脱落细胞不一定能明确中枢神经系统肿瘤的病理类型,但脱落细胞阳性,一定能够明显缩短患者从就诊到明确诊断、转而进入肿瘤正规治疗的时间,这是非常有意义的。

3.本例患者病灶多发,包括丘脑、胼胝体、颞叶等,并且在诊治过程中有动态变化,因此穿刺活检的靶点选择也是关键问题之一,多个靶点分别穿刺固然能提高阳性率,但同时也会增加出血、损伤等并发症概率。为兼顾穿刺阳性检出率和安全性,我们综合分析常规MRI及代谢MRI影像,最终选择常规MRI强化最明显、同时MRS提示Cho/NAA比值最高的感兴趣区作为导航下穿刺活检术的穿刺靶点,仅在一个靶点取材,最终得到明确诊断,术后没有相关并发症。

4. 患者治疗方案(放化疗)的选择 原发性中枢神经系统淋巴瘤治疗原则可选手术(包括活检)明确病理,术后首选化疗,化疗方案以大剂量MTX方案为主;MTX方案化疗后,如缓解,之后可以用其它化疗方案巩固,也可用低剂量全脑放疗巩固,如未缓解,首选全脑放疗。如果患者有化疗禁忌症的,可采用全脑放疗。2015年NCCN指南和2014年指南有一个很大不同:即:更强调化疗的作用和地位。2014年,按患者KPS分成两组,KPS≥40和KPS<40。简而言之:KPS≥40首选大剂量MTX方案,KPS<40首选全脑放疗。2015年,强调能做化疗的做化疗,KPS不是拒绝化疗的理由,除非患者有化疗禁忌症。对于用了激素后一般情况仍很差,但没有化疗禁忌症的患者,可以行全脑放疗或以MTX方案化疗(无法耐受MTX的,可以其它方案化疗)或最佳支持治疗等。当然还要考虑家属的意愿和医患沟通等等。

5.本例患者是在是在多学科(神经内科、神经外科、神经影像科、检验科和病理科)合作下明确诊断的,后续需要血液科和放疗科治疗,一个病人需要多个科室共同协作完成,本例患者是MDT诊疗模式一个很好的案例。

感谢华山医院脑胶质瘤MDT团队,尤其感谢吴劲松教授对本文提出宝贵的修改意见。



作者介绍


赵桂宪 
复旦大学附属华山医院神经内科

赵桂宪 复旦大学附属华山医院神经病学专业主治医师,临床医学博士。2000年毕业于西安交通大学临床医学院,获医学学士学位。2008年博士毕业于福建医科大学。2010年赴加拿大温哥华UBC大学进行短期MS临床研究培训。擅长中枢神经系统脱髓鞘疾病的诊断和鉴别诊断,对神经遗传变性病和周围神经病也有一些自己的心得体会。目前主要进行多发性硬化(MS)的临床及科学研究。主持完成多发性硬化国家自然基金1项,曾以第一骨干参与1项中国-加拿大多发性硬化合作课题,并曾参与完成研究生导师的国家自然基金和省级自然基金多项。

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    2018-07-29 yaanren
  2. [GetPortalCommentsPageByObjectIdResponse(id=1898640, encodeId=01ca189864033, content=<a href='/topic/show?id=e5062028978' target=_blank style='color:#2F92EE;'>#不典型#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20289, encryptionId=e5062028978, topicName=不典型)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Sun Jul 29 11:02:00 CST 2018, time=2018-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1624225, encodeId=5b041624225ca, content=<a href='/topic/show?id=a9b2222e60a' target=_blank style='color:#2F92EE;'>#中枢神经#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=22276, encryptionId=a9b2222e60a, topicName=中枢神经)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1fcf20658765, createdName=smlt2015, createdTime=Wed Jun 27 11:02:00 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327309, encodeId=f07732e309a9, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/fhZdOu27e88Voqh19n8eF8cLplo8L4nicKtH0WnE3KFELXns5XDu8rsiceK2HHDZc2SEStia5VV3Pia2QLMVqlWbHw/0, createdBy=6e012139475, createdName=神功盖世, createdTime=Wed Jun 27 05:39:08 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327305, encodeId=f6f932e3053f, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/07/a9772c74ffd6edc03a7f9af07b4747f6.jpg, createdBy=b3722138742, createdName=sunfeifeiyang, createdTime=Wed Jun 27 05:36:49 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=326987, encodeId=908732698e82, content=学习一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzaiabIFicf63hKvVMjL6aJlx4yX4UcXmzX9DyibCRcicq0QtCRWMaQKh8MYjE1D3EKUBopgiaGWYuqbeR/0, createdBy=0c2b1999806, createdName=三生有幸9135, createdTime=Mon Jun 25 22:26:01 CST 2018, time=2018-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=326965, encodeId=1910326965c5, content=学习了.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Mon Jun 25 20:27:13 CST 2018, time=2018-06-25, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1898640, encodeId=01ca189864033, content=<a href='/topic/show?id=e5062028978' target=_blank style='color:#2F92EE;'>#不典型#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20289, encryptionId=e5062028978, topicName=不典型)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Sun Jul 29 11:02:00 CST 2018, time=2018-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1624225, encodeId=5b041624225ca, content=<a href='/topic/show?id=a9b2222e60a' target=_blank style='color:#2F92EE;'>#中枢神经#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=22276, encryptionId=a9b2222e60a, topicName=中枢神经)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1fcf20658765, createdName=smlt2015, createdTime=Wed Jun 27 11:02:00 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327309, encodeId=f07732e309a9, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/fhZdOu27e88Voqh19n8eF8cLplo8L4nicKtH0WnE3KFELXns5XDu8rsiceK2HHDZc2SEStia5VV3Pia2QLMVqlWbHw/0, createdBy=6e012139475, createdName=神功盖世, createdTime=Wed Jun 27 05:39:08 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327305, encodeId=f6f932e3053f, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/07/a9772c74ffd6edc03a7f9af07b4747f6.jpg, createdBy=b3722138742, createdName=sunfeifeiyang, createdTime=Wed Jun 27 05:36:49 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=326987, encodeId=908732698e82, content=学习一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzaiabIFicf63hKvVMjL6aJlx4yX4UcXmzX9DyibCRcicq0QtCRWMaQKh8MYjE1D3EKUBopgiaGWYuqbeR/0, createdBy=0c2b1999806, createdName=三生有幸9135, createdTime=Mon Jun 25 22:26:01 CST 2018, time=2018-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=326965, encodeId=1910326965c5, content=学习了.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Mon Jun 25 20:27:13 CST 2018, time=2018-06-25, status=1, ipAttribution=)]
    2018-06-27 神功盖世

    学习

    0

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    2018-06-27 sunfeifeiyang

    学习

    0

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    2018-06-25 三生有幸9135

    学习一下

    0

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    2018-06-25 天地飞扬

    学习了.谢谢分享!

    0

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即使大多数人没有这种非得一头扎进海底的冲动,但也都有过类似的熟悉感觉。我们并非都要以这样的方式才能体验到冒险的冲动。所以这是为什么呢?研究人员一直怀疑这可能与某些遗传因素有关,但之前这一推测并未得到证实。而在一项最新发表于《通讯-生物》杂志的研究中,我们发现了26个与冒险有关的基因变体。

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  如果让你找到一个不喜欢健身的理由,你会想到什么?一项最新研究表明剧烈运动不仅会使你的肌肉疲劳,还会让你的眼睛疲劳。但是不要怕,咖啡能够让你的眼睛重新振作起来。   在剧烈运动过程中,我们的肌肉会随着能量消耗而变得疲劳,并会产生许多"垃圾"产物。肌肉的表现会受到"中枢性疲劳"现象的影响,在这种情况下,机体化学信号的失衡会阻碍中枢神经系统有效地指导肌肉运动。 &nb

毒素侵袭中枢神经!老王进了ICU

人民医院急诊科接诊老王时,他已经是苦笑面容,张不开口,言语不清,颈项强直,大汗淋漓,心率快,血压不稳,并出现了吞咽困难,全身肌肉阵发性抽搐,四肢肌张力持续增高,腹肌紧张得硬如板,抽搐的肌肉将老王的身体狠狠地向后扳,值班医生第一反应——“角弓反张”。经询问,老王平常不抽烟,即没遗传病,也没三高,身体挺好的,只是八天前被挨了一板砖。接诊医生在家属的指引下,看到了老王头后右侧,一个不足6公分的伤口,表

Chest:囊性纤维化患者的中枢神经功能障碍表现

囊性纤维化(CF)跨膜调节蛋白(CFTR)的功能障碍可以导致CF。目前,患者生存率的提高使得能够检测到越来越微妙的疾病表现。CFTR的中枢神经系统(CNS)功能障碍可能会扰乱昼夜节律,从而影响睡眠期。近期,一项发表在杂志Chest上的文章研究了成年人的睡眠,以更好地了解CFTR潜在的CNS 功能障碍。研究者们从2012年4月至2015年4月期间招募参加者,并对慕尼黑时计调查问卷(MCTQ)进行管理

盘点:中枢神经系统疾病研究领域进展汇总

中枢神经系统疾病研究领域进展汇总