1、01脈絡叢瘤J Neurosurg 88:581585, 1998Multiple choroid plexus papillomas of the lateral ventricle distinct from villous hypertrophy側腦室多發脈絡叢乳頭狀瘤FIG. 1. Axial T1-weighted MR images revealing slightly hypointense to isointense lesions in the right atrium and left inferior horn of the lateral ventricles (upp

2、er), and Gd-DTPAenhanced images demonstrating a marked homogeneous enhancement of the lesions (lower).平掃及增強影像。 FIG. 2. Sagittal T1-weighted MR images with Gd-DTPA enhancement clearly revealing the anatomical relationship between the tumors and the surrounding structures, which marked their location

3、more easily. Left: Sagittal images of the left side of brain. Center: Sagittal image of the center of brain. Right: Sagittal images of the right side of brain. FIG. 3. Upper: Photomicrograph of the tumor specimen obtained during the first operation in the right ventricular region. Note the papillary

4、 growth of a single and partly stratified layer of columnar epithelium, consistent with a typical choroid plexus papilloma. Lower: Photomicrograph of the tumor specimen obtained during the second operation in the left ventricular region. The histopathological characteristics are similar to those sho

5、wn in the right ventricular region. H & E, original magnification 3 200.病理結果。 Acta Neurochir (2003) 145: 139143 DOI 10.1007/s00701-002-1047-x Acta NeurochirurgicaPrinted in Austria Case Report Choroid plexus papilloma of bilateral lateral ventricle雙側側腦室脈絡叢腫瘤T. Erman1, A. I. Gocer1, S . Erdogan2, M.

6、Tuna1, F. Ildan1, and S. Zorludemir21Department of Neurosurgery, C ukurova University, School of Medicine, Adana, Turkey2Department of Pathology, C ukurova University, School of Medicine, Adana, TurkeyFig. 1. (a) Axial non-contrast CT scan demonstrating tumour of the lateral ventricles bilaterally a

7、nd hydrocephalus. (b) Axial contrast enhanced CT scan demonstrating an enhancing tumour of the lateral ventricle bilaterally with hydrocephalus (b) Axial contrast enhanced CT scan demonstrating an enhancing tumour of the lateral ventricle bilaterally with hydrocephalus Fig. 2. Axial enhanced MRI dem

8、onstrating a lobulated enhancing mass in the bilateral lateral ventricular trigone Fig. 2. Axial enhanced MRI demonstrating a lobulated enhancing mass in the bilateral lateral ventricular trigone02腦膜腫瘤Transient memory disturbance after removal of an intraventricular trigonal meningioma by a parieto-

9、occipital interhemispheric precuneus approach:Case report腫瘤切除后記憶暫時紊亂Koji Tokunaga, MDa,T, Takashi Tamiya, MDb, Isao Date, MDaaDepartment of Neurological Surgery, Okayama University Graduate School of Medicine,Dentistry and Pharmaceutical Sciences, Okayama 700-8558, JapanbDepartment of Neurological S

10、urgery, Faculty of Medicine, Kagawa University, Kagawa 700-8558, JapanReceived 15 December 2004; accepted 13 June 2005Fig. 1. Left and center: Preoperative gadolinium-enhanced T1-weighted MR images demonstrating a homogeneously enhanced mass at the left trigonal region, extending predominantly in th

11、e anterior direction. Right: A T2-weighted MR image showing moderate edema around the mass Fig. 2. Left and right: Postoperative gadolinium-enhanced T1-weighted images demonstrating the route approaching the left trigone from the interhemispheric fissure and confirming complete removal of the tumorS

12、ymptom Changes Caused by Movement of a Calcified Lateral Ventricular MeningiomaCASE REPORT鈣化的側腦室腦膜瘤Shigeki Imaizumi, M.D.,* Takehide Onuma, M.D.,* Motonobu Kameyama, M.D.,* andKiyoshi Ishii, M.D.*Departments of Neurosurgery and Radiology, Sendai City Hospital, Sendai, JapanSequential CT studies over

13、 16 years revealed no distinctive change in size of the calcified meningioma (A-D). CT taken 16 years before this admission (A). Hydrocephalus and peritumoral edema caused by a tumor in the ventricle were seen at admission (B). The ventricle size was normalized after ventriculoperitoneal shunt place

14、ment (C). The tumor was displaced beyond the ventricular midline five months later (D). Half of the tumor was resected during the 1st surgery using the trans callosal route (E) and the remaining mass was removed during the second surgery using the trans inferior temporal sulcus approach (F). Neurol

15、Med Chir (Tokyo) 44, 484488, 2004Hemangiopericytoma in the Trigone of the Lateral VentricleCase Report 側腦室三角區血管外皮瘤Fig. 1 Axial computed tomography scan showing a massive right tri gonalmass, with dilation of the contralateral ventricle. Fig. 2 (A) Preoperative axial T1-weighted magnetic resonance (M

16、R) image showing a large, isointense trigonal tumor. (B) T2-weighted MR image showing the hypointense tumor. (C) Sagittal T1-weighted MR image with contrast medium showing intense enhancement of the tumor.Neurol Med Chir (Tokyo) Childs Nerv Syst (1998) 14:350353 Springer-Verlag 1998 BRIEF COMMUNICAT

17、IONMeningiomas of the lateral ventricles of the brain in childrenFig. 1 MRI showing intraventricular massFig. 2 CT 2 weeks after operation, showing complete removal of tumour Fig. 3 CT scan showing intraventricular neoplasm in trigone region Fig. 4 CT 6 months after operation, showing complete remov

18、al of tumour Acta Neuropathol (Berl) (1986) 71 : 167- 170 ActaNeuropathologlca9 Springer-Verlag 1986Central neurocytoma - a rare benign intraventricular tumorj . j . Townsend I, 2 and J. P. Seaman 3Department of Pathology, University of Utah2 Salt Lake Veterans Administration Medical Center3 LDS Hos

19、pital, Salt Lake City, UT, USAFig. 1. This picture demonstrates the well-circumscribed soft tumor mass (in the anterior right lateral ventricle) attached to the septum pellucidum and corpus callosum (case 1) Fig. 2. The CT scan demonstrates the well-circumscribed mass in the right lateral ventricle

20、anteriorly producing hydrocephalus (case 2) Fig. 3. This print demonstrates the tumor to be composed of small dark nuclei forming occasional Homer Wright rosettes as seen in the center of the picture (case 1). Hematoxylin and eosin, x 800 Fig. 4. The tumor was composed of small round to oval nuclei

21、which formed Homer Wright rosettes as seen in the center (case 2).Hematoxylin and eosin, x 375Fig. 5. The neurosecretory granules can be seen in this electron micrograph, x 27,173Fig. 6. Electron microscopy demonstrated numerous synapses with well-formed junctions as seen in the center, x 27,173 Jou

22、rnal of Clinical Neuroscience (1999) 6(4), 319-323 1999 Harcourt Brace & Co. LtdClinical studiesIntraventricular neurocytoma: a clinicopathological study of 20 cases with review of the literature Mehar Chand Sharma MD, Chitra SarkaP MD, Asis Kumar Karak MD PHD, Sailesh Gaikwad 2 MD,Ashok Kumar Mahap

23、atra a MCH, Veer Singh Mehta a MCHFig. 1 Contrast enhanced CT scan showing a well defined hyperdense mass, predominantly in the right lateral ventricle with cyst formation and secondary hydrocephalus (Case 16). Fig. 2 Photomicrographs showing: (A) cellular areas separated by acellular fibdllary zone

24、s (H&E x 350); (B) thin walled dilated vascular channels within the tumour (H&E 140); (C) diffuse fibrillary immunostaining with synaptophysin antibody (x 200) 04囊腫樣瘤Case reportEpidermoid of the lateral ventricle: evaluation with diffusionweighted and diffusion tensor imaging表皮樣囊腫Radboud W. Koot a,

25、Anuradha P. Jagtap b, Erik M. Akkerman b, Gerard J. DenHeeten b, Charles B.L.M. Majoie b,*a Department of Neurosurgery, Academic Medical Center, P.O. Box 22660, 1100 DD Amsterdam, Netherlandsb Department of Radiology, Academic Medical Center, P.O. Box 22660, 1100 DD Amsterdam, NetherlandsReceived 4

26、March 2003; accepted 14 March 2003Fig. 1. (A, B, C): (A) Axial T2-weighted (3500/90/1), and axial (B) and coronal (C), contrast enhanced T1- weighted (570/40/2) MR images show enlarged left lateral ventricle with mass effect and shift of midline structures to the right. Note widening of the left cho

27、roidal fissure (C; arrow). A definite tumor cannot clearly be delineated. (D, E) Axial DWI shows a hyperintense lesion in the left perimesencephalic cistern (D; arrow) and in the dilated left lateral ventricle (E). The mass is surrounded by hypointense CSF. Findings are consistent with epidermoid tu

28、mor. (F) ADC map at the same level as (E) show ADC values in the lesion similar to brain parenchyma. (G) FA maps of the lesion show areas of anisotropy, clearly demonstrate its relationship to neighboring white matter tracts and accentuate the lobulated structure of the lesion (tensor-imaging). Fig.

29、 1. (A, B, C): (A) Axial T2-weighted (3500/90/1), and axial (B) and coronal (C), contrast enhanced T1- weighted (570/40/2) MR images show enlarged left lateral ventricle with mass effect and shift of midline structures to the right. Note widening of the left choroidal fissure (C; arrow). A definite

30、tumor cannot clearly be delineated. (D, E) Axial DWI shows a hyperintense lesion in the left peri mesencephalic cistern (D; arrow) and in the dilated left lateral ventricle (E). The mass is surrounded by hypointense CSF. Findings are consistent with epidermoid tumor. (F) ADC map at the same level as

31、 (E) show ADC values in the lesion similar to brain parenchyma. (G) FA maps of the lesion show areas of anisotropy, clearly demonstrate its relationship to neighboring white matter tracts and accentuate the lobulated structure of the lesion (tensor-imaging). A large arachnoid cyst of the lateral ven

32、tricle extending from the supracerebellar cisterncase report 蛛網膜囊腫Seoung Woo Park, MDa, Soo Han Yoon, MDb,*, Ki Hong Cho, MDb, Yong Sam Shin, MDbaDepartment of Neurosurgery, Kangwon National University, College of Medicine, Chunchon 200-701, South KoreabDepartment of Neurosurgery, Ajou University Sc

33、hool of Medicine, Suwon 443-721, South KoreaReceived 23 May 2005; accepted 30 July 2005Fig. 1. Initial MRimaging shows that the arachnoid cyst had developed from the supracerebellar space in the posterior fossa and extended into the antrum and temporal horn of the left lateral ventricle. A and B: Ax

34、ial MR imaging shows that the intraventricular cyst displaces the left choroidal vessels anteriorly (small arrow heads), the right choroid plexus laterally (smallarrow), the midline vessels to the right (large arrow), and an enlarged velum interpositum. C: Axial MR imaging shows that the left choroi

35、d plexus (small arrow) was severely displaced anteriorly and the thin cystic wall (arrow head)crossed the right lateral ventricle. D and E: CoronalMRimages show that the cyst (small arrow heads) displaces the left choroids plexus contralaterally (arrow) and the right choroid plexus and choroidal ves

36、sels laterally (large arrow head). F: Coronal MR images shows displaced and collapsed right choroids plexus (small arrow), branching portion of choroidal vessels (large arrow), and left choroidal vessels (arrow head). G: Sagittal MR imaging shows that the cyst of the posterior fossa depressing the c

37、erebellum downwardly (arrows) extending into and dilating the velum interpositum (small arrow heads) with anteriorly displaced contralateral choroid plexus (large arrow). H: Sagittal MR imaging shows the herniation of cerebellum (arrow) with visualization of the central canal of the cervical spinal

38、cord (arrow heads). 05室管膜瘤Clinical StudyIntraventricular tanycytic ependymoma: case report and review of the literatureBrian T. Ragel1, Jeannette J. Townsend2, Adam S. Arthur1 and William T. Couldwell11Department of Neurosurgery; 2Department of Pathology, University of Utah Health Sciences Center, S

39、alt Lake City,UT, USAKey words: supratentorial tumors, tanycytic ependymomaFigure 1. Brain MRI depicting 2.8 2.6 2.3 cm (height transverse anteriorposterior) lesion arising from the region of the left superolateral third ventricle and septum pellucidum. Mass extends superolaterally into the left fro

40、ntal horn of the lateral ventricle. (A) Axial T1 with contrast, showing minimal enhancement. (B) Axial T2, showing heterogenous signal. (C) Coronal T1 with contrast, with incidental left sphenoid wing meningioma (arrow). (D) Coronal FLAIR sequence. Figure 2. (A) Low-power H&E stain (150) showing mod

41、erately cellular tissue with areas of well-differentiated streaming tumor cells set in a vague fascicular architecture and faint perivascular pseudorosettes (black arrow). (B) High-power H&E photomicrograph (300X) depicting tumor cells arranged radially around a blood vessel, typical of the perivasc

42、ular pseudorosettes of ependymomas (black arrow). (C) High-power photomicrograph (600X) of GFAP immunohistochemistry reactivity, depicting the delicate GFAP-positive processes of ependymal cells radiating towards the blood vessel wall (black arrow). 06室管膜下室管膜瘤Shunji Nishio Takato Morioka Futoshi Mih

43、araMasashi FukuiSubependymoma of the lateral ventriclesFig. 1 Case 1. Enhanced CT scan shows a low density tumor in the right lateral ventricle Fig. 2AC Case 3. On contrast enhanced axial T1-weighted image, a hypointense intraventricular tumor shows no tumor enhancement. Note cystic areas within the

44、 tumor and associated hydrocephalus (A). While the tumor is indistinguishable from the cerebrospinal fluid in the ventricle on T2-weighted image (B), it is clearly distinguished on heavily T2-weighted image (C) Fig. 3AC Case 4. Axial T1-weighted precontrast MRI shows a hypointense tumor filling the

45、anterior horn of the right lateral ventricle (A). A T2-weighted MRI shows peritumoral edema in the right frontal lobe (B). Axial T1-weighted postcontrast MRI shows heterogeneous enhancement of the tumor (C) Massive symptomatic subependymoma星狀細胞增生性室管膜瘤 of the lateral ventricles: case report and revie

46、w of the literature大的癥狀性瘤Fig. 1 Axial pre- (a) and post- (b) contrast-enhanced computed tomography (CT) of the head shows a large symmetric isodense intraventricular mass without calcifications filling the lateral ventricles and extending into the temporal horns Fig. 2 Axial T2-weighted and fluid at

47、tenuation inversion recovery (FLAIR) images (b, c) show a large symmetric hyperintense intraventricular mass that fills the lateral ventricles (a, b) and the temporal horns Fig. 3 Axial (a) and coronal T1-weighted (b) post-contrastenhanced images demonstrate an intraventricular mass with minimal enh

48、ancement occupying the lateral ventricles and extending into the temporal horns Fig. 5 Axial T2-weighted (a),FLAIR (b), and T1-weighted(c) post-contrast-enhancedimages demonstrate a slight debulking of the tumor after surgery with CSF present in the frontal horns of the lateral ventricle. The patien

49、t has a right frontal ventriculoperitoneal shunt catheter in place and is presently asymptomaticFig. 4 Resection specimen reveals a subependymoma, as characterized by nests of tumor cell nuclei and microcysts in a fibrillary stroma 07膠質腫瘤Multicentric juvenile pilocytic astrocytoma occurring primaril

50、y in the trigone of the lateral ventricle Fig. 1 A Pre- and B post-contrast enhancement computerized tomography showing a766 cm mixed-density mass in the trigone of the left lateral ventricle entrapping the ipsilateral occipital horn. The solid compartment and cystic wall are well enhanced. There we

51、re conglomerate calcifications in the posteromedial portion of the mass. Hydrocephalus is also noted Fig. 2AD Preoperative magnetic resonance images (MRIs). A Axial T1-weighted MRI showing a mixed-intensity mass with sharp demarcation from the adjacent structures except the posteromedial portion of

52、the mass. BD Gadoliniumenhanced MRIs showing that the cystic wall and solid component are well enhanced and that the septum pellucidum and lateral ventricular wall, the perimesencephalic cistern, and the anterior meninges or ventral aspect of the brain stem are enhanced, suggesting leptomeningeal sp

53、read. Small enhanced nodules are also seen in the right anterior temporal and occipital lobes as nodular disease. Tonsillar herniation and mild distortion of the brain stem with enlargement of the IV ventricle are also shown Fig. 3 Photomicrograph of the trigonal juvenile pilocytic astrocytoma showi

54、ng the typical histological features, including pilocytic, stellate, and oligodendroglial cells, microcysts, cytoid or granular bodies, and Rosenthal fibers with loose and compact areas. Vascular proliferation and pleomorphism are absent. (H & E, 250) Intraventricular Hemangiopericytoma血管外皮瘤Nabeel A

55、l-Brahim, MD, Rocco Devilliers, MD, FRCS(C), andJohn Provias, MD, FRCP(C)Figure 1. Axial T1-weighted magnetic resonance image shows a well delineated tumor in the right lateral ventricle. Figure 2. Contrast-enhanced T1-weighted image shows homogenous enhancement of the tumor. Figure 3. Cellular tumo

56、r with slitlike vasculature, some with stag horn appearance. (Scanning magnification.) Mixed malignant germ cell tumour of the lateral ventricle in an 8-month-old girl: case report and review of the literature惡性生殖細胞腫瘤Fig. 1 MRI scan showing contrast- enhancing tumour masses in both lateral ventricle

57、s with a big cyst located in the left lateral ventricle Fig. 2 MRI scan showing considerablereduction in tumour volume after four cycles of chemotherapy Fig. 3 MRI scan demonstrating no tumour 14 months after initial diagnosis Mature Teratoma of the Lateral Ventricle: Report of Two Cases成熟畸胎瘤M. Selc

58、uki1, A. Attar1, N. Yuceer1, H. Tuna1, and E. C akroglu21 Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Ankara, School of Medicine, Ankara, Turkey, and2Department of Pathology, Ataturk Chest Diseases and Thoracic Surgery Center, Ankara, TurkeyFig. 1. Preoperative axial enhanced CT shows a mass of the lateral ventricle Fig. 3. Mature adipose