Primary Pulmonary Chordoid Meningioma

Primary pulmonary meningioma is a rare disease, and chordoid meningioma is an uncommon variant of meningioma in the central nervous system (CNS) with a high recurrence rate. We report a case of primary pulmonary chordoid meningioma that presented as a solitary pulmonary nodule (SPN). The SPN was resected by thoracoscopic wedge resection and was revealed to have characteristics of chordoid meningioma. After confirming the absence of a meningioma in the CNS by brain imaging, the nodule was diagnosed as a primary pulmonary chordoid meningioma. The patient remained disease-free after 26 months postoperatively. To our knowledge, this is the third case of primary pulmonary chordoid meningioma to be reported.

A Case of Thoracic Extradural Chordoid Meningioma: Focusing on Radiologic Features

Chordoid meningioma, an uncommon subtype of meningioma, occurs rarely in the spine. In this case report, the authors present a case of spinal chordoid meningioma in a young female patient, and include a detailed description of imaging findings and a literature review.

The value of MRI in diagnosis of chordoid meningioma and differenciation with other meningiomas / 实用放射学杂志

Objective To analyze the MRI features of chordoid meningioma (CM),and to compare with other meningiomas. Methods Clinical and MRI features of 7 patients with CM confirmed by pathology were analyzed retrospectively.Featrues of every MRI sequence were investigated qualitatively.Meanwhile normalized signal ratios of each sequence were analyzed furtherly,including normalized T1 weighted image intensity ratios (NT1 ),normalized T2 weighted image intensity ratios(NT2 ),normalized ADC ratios (NADC)and normalized T1 WI contast enhancement intensity ratios (NCE).Fisher ’s exact test and Dunnett T 3 test were employed to analyze the difference of CM and nonchordoid meningiomas (34 cases of WHO grade Ⅰ meningioma,1 6 cases of nonchordoid WHO grade Ⅱ meningioma,and 5 case of WHO grade Ⅲ meningioma).Results The CM showed hyperintensity on T2 WI and meanwhile other nonchordoid meningiomas demonstrated isointensity,hypointensity or slight hyperintensity on T2 WI.Evaluations of DWI revealed variable signal intensities of CM.But all 7 cases had no obvious restricted diffusion,and increased signal was seen on the ADC map in each patient.The solid parts of CM enhanced markedly after contrast agent injection.Quantitative indicators NT2 , NADC and NCE of CM were higher than other meningiomas(P <0.01),but NT1 showed no statistic difference between CM and other meningiomas (P =0.889).Whether there was cyst,necrosis,orflow void sign on T2 WI,and no matter with or without perifocal edema,dural tail sign and a broader base among meningiomas had no significance in differentiating CM and other meningiomas.Conclusion CM has typical MRI features.The tumors show hyperintensity on T2 WI,especially have no obvious restricted diffusion and enhance markedly after contrast.The measurement of NT2 ,NADC and NCE enables reliable preoperative prediction of the atypical histopathologic diagnosis.

Meningioma cordoide: reporte de dos casos y revisión de la literatura / Cordoid meningioma: report of two cases and review of the literature

El meningioma cordoide es un subtipo infrecuente de meningioma. La mayoría es de gran tamaño y de localización supratentorial. Suelen presentarse clínicamente con síntomas inespecíficos. La Resonancia Magnética de Cerebro muestra una lesión extraaxial compatible con meningioma, siendo la histología y las pruebas de inmunohistoquímica necesarias para realizar el diagnóstico definitivo. La anatomía patológica remeda a la del cordoma ya que se encuentran constituidos por células vacuoladas, epiteloides o fusiformes, dispuestas en cordones o islas dentro de una matriz mixoide. La importancia de conocer esta variante de meningioma radica en su alta tasa de recurrencia, principalmente si la exéresis es incompleta, por lo que son considerados como tumores de mayor agresividad y peor pronóstico. Se presentan dos casos de meningioma cordoide operados en nuestro centro.

Chordoid meningiomas are a rare form of meningioma that, as with most meningiomas, typically present as a bulky, supratentorial tumor. Otherwise, their clinical presentation is non-specific. Brain MRI shows an extra-axial lesion compatible with a meningioma; however, the diagnosis must be confirmed by histopathology and immunohistochemistry. Microscopically, these tumors are composed of spindle or epithelioid, partly-vacuolated cells arranged in nests or cords in a myxoid matrix, resembling a chordoma. Recurrence rates are high following subtotal resection. As such, these tumors are considered a more aggressive variant associated with poorer outcomes. Two patients with a chordoid meningioma treated surgically at our centre, using microsurgical techniques, are presented.

Clinical Features and Treatment Outcome of Chordoid Meningiomas in a Single Institute

OBJECTIVE: Meningioma is the second most common primary central nervous system neoplasm. In contrast, chordoid meningioma is rare; due to the paucity of cases, little is known about its clinical features or treatment outcomes. The objectives of this study were to describe the clinical characteristics and outcomes for patients with chordoid meningioma. METHODS: In total, 16 patients, with newly diagnosed chordoid meningioma who underwent surgical excision between 1999 and 2012 were included. We retrospectively evaluated the medical records, radiological findings, and pathological findings. The median follow-up period was 56.5 (range, 3-170) months. The MIB-1 labeling index ranged from 1 to 26.60% (median, 5.04). RESULTS: Simpson grade I, II, and III resections were performed in four, nine, and three patients, respectively. The overall recurrence rate was 37.5%. Overall progression-free survival (PFS) after resection was 94.7 months (95% CI=62.9-126.6). Of the 4 patients with Simpson grade I resection, recurrence occurred in one patient. Among the Simpson grade II and III resection groups, eight patients underwent adjuvant radiation therapy and they showed significantly longer PFS (121 months, 95% CI=82.1-159.9) than the patients who underwent surgery alone (40.5 months, 95% CI=9.6-71.3) by the log-rank test (p<0.05). CONCLUSION: Chordoid meningiomas are difficult to manage and have a high rate of recurrence. Complete resection of the tumor is a key determinant of better outcomes. Adjuvant radiation therapy is recommended, eparticulary when Simpson grade I resection was not achieved.

Chordoid Meningioma

A case of chordoid meningioma occurring in a 61-year-old woman who did not have a Castleman's disease is presented. The patient had suffered from headache and motor dysphasia. Laboratory findings are normal. The tumor, located in the left frontal region and associated with peritumoral edema, was totally resected. Surgical specimen revealed a solid mass with irregular surface that measured 3.5 x 4.5 x 4cm. Immunohistochemical staining revealed that the tumor cells expressed epithelial membrane antigen(EMA) focally, but not S-100 protein and glial fibrillary acid protein (GFAP), and the Ki-67 proliferative index of the tumor was 9%. The neoplasm was diagnosed chordoid meningioma of the World Health Organization(WHO) grade II. After total resection, her preoperative headache and dysphasia were disappeared.

A Case of Chordoid Meningioma at Right Temporo-Parietal Lobe: Case Report

A large tumor located at right temporoparietal lobe was found in 25-years-old female. The brain CT scan and MR imaging revealed a large multi-lobulated mass which was composed of solid and cystic portions involving right temporoparietal lobe. Preoperative routine laboratory check showed microcytic hypochromic anemia and monoclonal gammopathy with bate-gamma bridging. The mass was removed totally by operation and histologic diagnosis resulted in chordoid meningioma surrounded by massive polyclonal lymphoplasmacellular infiltrates. After the mass was removed, the blood picture of the patient normalized and the patient discharged with neurologically free stage. We report this case with relative literatures.