infratentorial

Discussion of Disease : Cystic infratentorial mass.

讨论: 囊性幕下占位病变.

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Pineal region tumor excision-combined supratentorial and infratentorial approach

松果体区肿瘤切除的小脑幕上下联合切口

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objective: to report 24 cases of petroclival tumors resected via the trans petrous combined supra - infratentorial approach.

目的：报道24例岩尖-斜坡肿瘤经岩骨-小脑幕上下联合人路手术切除。

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Of all, intracranial hematoma accounted for 49 cases ( cerebral hemorrhage 18 cases, subacute and chronic traumatic intracranial hematoma 31 cases), intracranial tumors were 96 cases ( supratentorial tumors 41 cases, infratentorial tumors 47 cases, conarial region tumors 8 cases).

其中，颅内血肿49例（脑出血18例，亚急性及慢性外伤性颅内血肿31例），颅内肿瘤96例（幕上肿瘤41例，幕下肿瘤47例，松果体区肿瘤8例）。

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Objective To explore complication in removal of pineal tumors by infratentorial supracerebellar approach ( Krause's approach).

目的探讨经幕下小脑上入路（Krause'sapproach）切除松果体瘤的有关并发症。

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Combined supra-infratentorial approach was considered to be the main approach for large tumors.

联合入路在巨大肿瘤的切除中最为常用.

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Measuring supratentorial and infratentorial area in Chiari I malformation using MRI

Chiari I畸形幕上下面积MRI测量

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Objective To evaluate the anatomical variations of the straight sinus and their effects on the infratentorial supracerebellar approach to pineal region lesions.

目的评估直窦解剖变异对幕下小脑上入路治疗松果体区病变手术的影响。

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There were 725 caes of intracranial tumors, among which the supratentorial tumors were 449 cases and infratentorial tumors were 276 cases. There were 41 cases of intraspinal neoplasms.

部位：颅内725例，其中幕上499例，幕下276例，椎管内41例。

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Acute traumatic infratentorial hematoma

急性损伤性幕下血肿

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In contrast, when using the infratentorial supracerebellar approach, the exposure of the vein of Galen and its major branch, the internal cerebral vein is not satisfied.

幕下小脑上入路Galen静脉及其主要属支大脑内静脉显露差。

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Site of infarction were cerebral hemisphere ( 31 cases), brain stem ( 15 cases), supratentorial and infratentorial brain ( 4 cases).

梗死部位：大脑半球31例，脑干15例，幕上幕下并存4例。

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Influence of anatomical variations of the straight sinus on infratentorial supracerebellar approach for pineal region tumors

直窦解剖变异对松果体区幕下小脑上入路手术的影响

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Objective : To report 24 cases of petroclival tumors resected via the trans petrous combined supra-infratentorial approach.

目的: 报道24例岩尖-斜坡肿瘤经岩骨 - 小脑幕上下联合人路手术切除.

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Methods 60 patients with great supratentorial and infratentorial brain tumors were referred to the resection by surgery, who were divided into conventional drainage group from tumor chamber and self made balloon catheter drainage group.

方法先后对巨大型幕上、幕下脑肿瘤60例予以手术切除，将其分为瘤腔常规导管引流和自制球囊导管引流两组。

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CT demonstration of 4 cases of infratentorial haemangioblastoma and 2 cases of supratentorial malignant haemangiopericytoma conformed surgically and pathologically in our hospital were analyzed in this article.

本文分析了我院经手术及病理证实的6例血管母细胞瘤，其中4例为小脑血管母细胞瘤，2例为幕上恶性血管外皮瘤的CT表现。

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Supratentorial and infratentorial tumors predominate from birth to 3 years and from 4 to 11 years respectively.

幕上肿瘤的常见发病年龄为从出生到3岁，而幕下肿瘤的常见发病年龄为4～11岁。

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Objective: To study the characters and relationship between MRI findings of infratentorial metastasis from lung cancer and its blood distribution.

目的：研究肺癌幕下脑转移瘤的MRI分布特征与血供的相关性。

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Intracranial Tumors Removed with Combined Supratentorial and Infratentorial Approach

幕上幕下联合入路切除颅内肿瘤28例临床观察

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The lesions in midbrain were operated by midline supracerebellar infratentorial ( 46.7%, 7/ 15), subtemporal or temporal-occipital transtentorial ( 26.7%, 4/ 15).

中脑病变手术入路选择以中线小脑上（46.7%，7/15）、颞下或颞-枕（26.7%，4/15）为主；

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Objective To probe pathogenesis of Chiari I malformation by measuring supratentorial and infratentorial area with MRI.

目的运用MRI对Chiari I畸形患者的幕上下结构进行测量，探讨Chiari I畸形的发病机制。

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There were 490 cases of intracranial tumors, among which the supratentorial tumors were 388 cases, infratentorial tumors were 90 and the tumors involving both supratentorial and infratentorial were 12 cases.

肿瘤部位：颅内490例，其中幕上388例，幕下90例，幕上下12例；

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The preoperative measurements of the straight sinus inclination on MRI and identification of the relationship between the operative approach and lesion play an important role in dealing with the pineal region lesion via infratentorial supracerebellar approach.

术前应用MRI了解直窦的倾斜度，明确手术路径与松果体区病变的空间位置关系，对手术具有重要的指导意义。

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