Anaplastic transformation of an atypical intraventricular meningioma with metastases to the liver: case report.

OBJECTIVE: Malignant intraventricular meningiomas are very rare. To the best of our knowledge, only eleven cases have been reported thus far. Seven of them developed cerebrospinal fluid (CSF) metastases. We present herein the first case of a malignant intraventricular meningioma with extraneural metastases. CLINICAL PRESENTATION: We report a 44 year-old-man with a history of progressive headache and disorientation. Magnetic resonance imaging (MRI) revealed a 5-cm homogeneously-enhancing mass in the right trigone. INTERVENTION: The lesion was totally resected via a parietooccipital transcortical approach. Histological examination demonstrated an atypical meningioma. Thereafter, the tumor recurred twice. At first recurrence, the tumor was completely removed again and external radiotherapy was administered. At surgery at second recurrence, the tumor was more aggressive, invading the brain parenchyma. Histological examination showed anaplastic meningioma. The patient was readmitted to hospital with fever and pain in right hypochondrium. Abdominal ultrasound examination disclosed multiple hypoechoic liver lesions. Biopsy was consistent with liver metastases of a malignant meningioma. The patient died of acute liver failure seven months after initial diagnosis. CONCLUSION: Malignant intraventricular meningiomas are prone to recur and develop metastases, mainly through the CSF. Nevertheless, our case shows that extraneural metastases are also possible. Therefore, when systemic deterioration occurs in a patient with a malignant intraventricular meningioma, metastases to extraneural organs such as the liver must be ruled out.

Anaplastic transformation of an atypical intraventricular meningioma withmetastases to the liver: case report

Objective. Malignant intraventricular meningiomasare very rare. To the best of our knowledge, only elevencases have been reported thus far. Seven of them developedcerebrospinal fluid (CSF) metastases. We presentherein the first case of a malignant intraventricularmeningioma with extraneural metastases.Clinical presentation. We report a 44 year-old-manwith a history of progressive headache and disorientation.Magnetic resonance imaging (MRI) revealed a5-cm homogeneously-enhancing mass in the right trigone.Intervention. The lesion was totally resected via aparietooccipital transcortical approach. Histologicalexamination demonstrated an atypical meningioma.Thereafter, the tumor recurred twice. At first recurrence,the tumor was completely removed again andexternal radiotherapy was administered. At surgeryat second recurrence, the tumor was more aggressive,invading the brain parenchyma. Histological examinationshowed anaplastic meningioma. The patientwas readmitted to hospital with fever and pain in righthypochondrium. Abdominal ultrasound examinationdisclosed multiple hypoechoic liver lesions. Biopsywas consistent with liver metastases of a malignantmeningioma. The patient died of acute liver failureseven months after initial diagnosis.Conclusion. Malignant intraventricular meningiomasare prone to recur and develop metastases, mainlythrough the CSF. Nevertheless, our case shows thatextraneural metastases are also possible. Therefore,when systemic deterioration occurs in a patient with amalignant intraventricular meningioma, metastases toextraneural organs such as the liver must be ruled out (AU)

Objetivos. Los meningiomas malignos intraventricularesson muy infrecuentes. En la bibliografía existentesólo se han descrito once casos hasta ahora. Sietede ellos desarrollaron metástasis a través del líquidocefalorraquídeo (LCR). Presentamos el primer caso deun meningioma maligno intraventricular con metástasisextraneurales.Caso clínico. Paciente varón de 44 años de edad conuna clínica de cefalea progresiva y desorientación. Laresonancia magnética mostraba un proceso expansivointracraneal en el trígono derecho con captación decontraste de forma homogénea.Intervención. Se practicó una resección total de lalesión a través de un acceso transcortical. El análisishistológico mostró un meningioma atípico. A pesarde la resección total, el tumor recidivó otras dosveces. Después de la primera recidiva, el tumor fueextirpado nuevamente y el paciente recibió radioterapiaexterna. En la segunda recidiva, el tumorse comportó de forma más agresiva, invadiendo elparénquima cerebral. El análisis histológico mostrabaun meningioma anaplásico. El paciente fueingresado nuevamente por fiebre y dolor en el hipocondrioderecho. Una ecografía abdominal mostrómúltiples lesiones hipoecogénicas hepáticas. La biopsiade dichas lesiones fue compatible con metástasisdel meningioma maligno. El paciente falleció debidoa una insuficiencia hepática aguda siete meses despuésdel diagnóstico inicial.Conclusiones. Los meningiomas malignos intraventricularestienden a recurrir y producir metástasis,principalmente a través del LCR. Sin embargo,nuestro caso muestra que los meningioma malignosintraventriculares también pueden metastatizar fueradel sistema nervioso central, siendo el primer caso descrito. Por lo tanto, cuando un deterioro sistémicoocurra en un paciente con un meningioma malignointraventricular debería descartarse la posibilidad demetástasis extraneurales como sucedió en este caso (AU)

Hepatocarcinoma con metástasis intestinales polipoides: hallazgo en un caso de necropsia / Hepatocarcinoma with polypoid intestinal metastasis. Autopsy findings

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