侧脑室肿瘤总结

J Neurosurg 88:581–585, 1998Multiple choroid plexus papillomas of the lateral ventricle distinct from villous hypertrophy侧脑室多发脉络丛乳头状瘤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 (upper), and Gd-DTPA–enhanced images demonstrating a marked homogeneous enhancement of the lesions (lower).平扫及增强影像。

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 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 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 shown in the right ventricular region. H & E, original magnification 3 200.病理结果。

Acta Neurochir (2003) 145: 139–143 DOI 10.1007/s00701-002-1047-x Acta Neurochirurgica Printed in Austria Case ReportChoroid plexus papilloma of bilateral lateral ventricleT. Erman1, A. I˙. Go¨c¸er1, S¸ . Erdog˘an2, M. Tuna1, F. I˙ldan1, 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 and 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 hydrocephalusFig. 2. Axial enhanced MRI demonstrating a lobulated enhancing mass in the bilateral lateral ventricular trigoneFig. 2. Axial enhanced MRI demonstrating a lobulated enhancing mass in the bilateral lateral ventricular trigoneTransient memory disturbance after removal of an intraventricular trigonal meningioma by a parieto-occipital interhemispheric precuneus approach:Case report肿瘤切除后记忆暂时紊乱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 Surgery, 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 the anterior direction. Right: A T2-weighted MR image showing moderateedema around the massFig. 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 tumorSymptom Changes Caused by Movement of a Calcified Lateral Ventricular Meningioma CASE REPORTShigeki Imaizumi, M.D.,* Takehide Onuma, M.D.,* Motonobu Kameyama, M.D.,* and Kiyoshi Ishii, M.D.†*Departments of Neurosurgery and †Radiology, Sendai City Hospital, Sendai, JapanSequential CT studies over 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 placement (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).Hemangiopericytoma in the Trigone of the Lateral Ventricle—Case Report—Fig. 1 Axial computed tomography scan showing a massive right tri gonalmass, with dilation ofthe contralateral ventricle.Fig. 2 (A) Preoperative axial T1-weighted magnetic resonance (MR) 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)Child’s Nerv Syst (1998) 14:350–353© Springer-Verlag 1998 BRIEF COMMUNICATIONMeningiomas 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 removal of tumourActa 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 Hospital, 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 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 800Fig. 4. The tumor was composed of small round to oval nuclei 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 27,173Journal 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 literatureMehar Chand Sharma ~ MD, Chitra SarkaP MD, Asis Kumar Karak ~ MD PHD, Sailesh Gaikwad 2 MD,Ashok Kumar Mahapatra 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 zones (H&E x 350); (B) thin walled dilated vascular channels within the tumour (H&E × 140); (C) diffusefibrillary immunostaining with synaptophysin antibody (x 200)Case reportEpidermoid of the lateral ventricle: evaluation with diffusionweighted and diffusion tensorimaging表皮样囊肿Radboud W. Koot a, 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 March 2003; accepted 14 March 2003Fig. 1. (A, B, C): (A) Axial T2-weighted (3500/90/1), and axial (B) and coronal (C), contrastenhanced T1- weighted (570/40/2) MR images show enlarged left lateral ventricle with masseffect and shift of midline structures to the right. Note widening of the left choroidal fissure (C;arrow). A definite tumor cannot clearly be delineated. (D, E) Axial DWI shows a hyperintenselesion 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 tumor. (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. 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 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 (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 ventricle extending from the supracerebellar cistern—case reportSeoung 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 Korea bDepartment of Neurosurgery, Ajou University School 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: Axial 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 choroid 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 vessels 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 cerebellum 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 cord (arrow heads).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, Salt Lake City,UT, USAKey words: supratentorial tumors, tanycytic ependymomaFigure 1. Brain MRI depicting 2.8 · 2.6 · 2.3 cm (height · transverse · anterior–posterior) lesion arising from the region of the left superolateral third ventricle and septum pellucidum. Mass extends superolaterally into the left frontal 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 moderately 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 perivascular 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).Shunji Nishio · Takato Morioka · Futoshi MiharaMasashi FukuiSubependymoma of the lateral ventriclesFig. 1 Case 1. Enhanced CT scan shows a low density tumor in the right lateral ventricleFig. 2A–C Case 3. On contrast enhanced axial T1-weighted image, a hypointenseintraventricular tumor shows no tumor enhancement. Note cystic areas within the 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. 3A–C Case 4. Axial T1-weighted precontrast MRI shows a hypointense tumor filling the 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星状细胞增生性室管膜瘤of the lateral ventricles: case report and review of the literature大的症状性瘤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 hornsFig. 2 Axial T2-weighted and fluid attenuation inversion recovery (FLAIR) images (b, c) show a large symmetric hyperintense intraventricular mass that fills the lateral ventricles (a, b) and the temporal hornsFig. 3 Axial (a) and coronal T1-weighted (b) post-contrastenhanced images demonstrate an intraventricular mass with minimal enhancement occupying the lateral ventricles and extending into the temporal hornsFig. 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 patient 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 stromaMulticentric juvenile pilocytic astrocytoma occurring primarily in the trigone of the lateral ventricleFig. 1 A Pre- and B post-contrast enhancement computerized tomography showing a7´6´6 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 were conglomerate calcifications in the posteromedial portion of the mass. Hydrocephalus is also noted Fig. 2A–D 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 the mass. B–D 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 spread. 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 shownFig. 3 Photomicrograph of the trigonal juvenile pilocytic astrocytoma showing the typical histological features, including pilocytic, stellate, and oligodendroglial cells, microcysts, cytoid or granular bodies, and Rosenthal fibers with loose and compact areas. Vascular proliferationand pleomorphism are absent. (H & E, ´250)Intraventricular HemangiopericytomaNabeel Al-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 tumor 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 literatureFig. 1 MRI scan showing contrast- enhancing tumour masses in both lateral ventricles 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 diagnosisMature Teratoma of the Lateral Ventricle: Report of Two Cases成熟畸胎瘤M. SelcËuki1, A. Attar1, N. YuÈceer1, H. Tuna1, and E. CË akõrogÆlu21 Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Ankara, School of Medicine, Ankara, Turkey, and2Department of Pathology, AtatuÈrk Chest Diseases and Thoracic Surgery Center, Ankara, TurkeyFig. 1. Preoperative axial enhanced CT shows a mass of the lateral ventricleFig. 3. Mature adipose tissue including nonstriated muscle bundles and tubular structures lined by tall columnar ciliated cells (HE, 200).Case Report: Craniospinal Cysts An endoscopically proven ventriculitis-type, cyst-like intraventricular primary lymphoma of the central nervous systemFig. 1. Magnetic resonance imaging shows a 43 3 cm cystic mass in the frontal horn of the left lateral ventricle. The cyst wall (white arrows) appeared as high intensity in T1-weighted images with gadolinium enhancement on the axial view (a). This cystic mass (white arrows) in the left lateral ventricle was attached to the medial and inferior ventricular wall around the foramen of Monro on the coronal and sagittal view (b, c). There was no parenchymal or leptomeningeal enhancementFig. 1. Magnetic resonance imaging shows a 43 3 cm cystic mass in the frontal horn of the left lateral ventricle. The cyst wall (white arrows) appeared as high intensity in T1-weighted images with gadolinium enhancement on the axial view (a). This cystic mass (white arrows) in the left lateral ventricle was attached to the medial and inferior ventricular wall around the foramen of Monro on the coronal and sagittal view (b, c). There was no parenchymal or leptomeningeal enhancementFig. 1. Magnetic resonance imaging shows a 43 3 cm cystic mass in the frontal horn of the left lateral ventricle. The cyst wall (white arrows) appeared as high intensity in T1-weighted images with gadolinium enhancement on the axial view (a). This cystic mass (white arrows) inthe left lateral ventricle was attached to the medial and inferior ventricular wall around the foramen of Monro on the coronal and sagittal view (b, c). There was no parenchymal or leptomeningeal enhancementFig. 3. Pathological examination showed non-Hodgkin’s lymphoma of B cell type, showing microscopically infiltrating lymphocytes along the perivascular spaces and small vessel walls with positive immunochemical staining for CD20 (white arrows)。