Management experience of pediatric meningioma in a Mexican reference center.

OBJECTIVE: Determine the histopathological and clinical characteristics of patients diagnosed with meningiomas and to establish the frequency of these tumors in the pediatric population Mexican. Determine the NF1/2 frequency in meningioma pediatric. METHODS: Samples from the histopathology file were reviewed, and from the complete clinical file the following patient data was reviewed: age, gender, diagnosis, diagnosis year, surgical resection, location, tumor size, symptoms, and family background. The frequency of NF1/2 in pediatric meningioma was reviewed in literature. RESULTS: Forty-four de novo cases were collected from pediatric patients; 19 were female patients and 25 males. The most frequent histological subtype was transitional meningioma. Of all the cases, 75% had a supratentorial localization and 20% had an extramedullary intrarachidian localization. Some clinical manifestations included seizures, paresis, headache, and visual disturbances. CONCLUSION: There is a low incidence of meningiomas in the pediatric population, more than 70% are Grade I, and they have supratentorial localization.

[Prognostic and survival factors among pediatric patients with ependymomas]. / Factores pronósticos y sobrevida de pacientes pediátricos con ependimomas.

BACKGROUND: Ependymomas constitute the third most common intracranial tumors in children. Risk factors include age, location, extent of surgical excision, and radiation therapy. Recently, chromosomal imbalances have been described. OBJECTIVE: Determine global survival of patients with ependymomas according to different prognostic factors. METHODS: We reviewed the medical charts of every pediatric patient with ependymoma from 1996 to 2005. Genomic imbalances were determined using comparative genomic hybridization (CGH). Survival was calculated using the Kaplan and Meier method. We used the Log Rank test for each risk factor. Death risk was calculated by odds ratio (OR). RESULTS: We included 24 patients. Global survival was 58.04%. The presence of chromosomal imbalances, particularly in chromosome 21, significantly affected survival Being under 5 years of age, anaplastic histology, chemotherapy other than ICE (ifosfamida-carboplatin-etoposide) and partial resection increased the risk of death. CONCLUSIONS: Known risk factors were confirmed in our study, including chromosomal imbalances. We describe a new chromosomal imbalance in chromosome 21 among 30% of study participants.

Factores pronósticos y sobrevida de pacientes pediátricos con ependimomas / Prognostic and survival factors among pediatric patients with ependymomas

Antecedentes: El ependimoma es el tercer tumor intracraneano más frecuente en pediatría. Los factores que influyen en el pronóstico son la localización, la edad del paciente, la resección quirúrgica y el tratamiento con radioterapia. Recientemente se ha descrito la presencia de alteraciones cromosómicas en el tumor como factor de mal pronóstico. El objetivo de esta investigación fue determinar la sobrevida de pacientes pediátricos con ependimoma de acuerdo con los diferentes factores pronósticos. Métodos: Se revisaron los expedientes de pacientes pediátricos con ependimoma de 1996 a 2005. Se determinaron las alteraciones cromosómicas mediante hibridación genómica comparativa. Se calculó la sobrevida de acuerdo con el método Kaplan-Meier y prueba de log rank de acuerdo a cada factor pronóstico. Se calculó el riesgo de morir para cada factor de acuerdo con la razón de momios. Resultados: Se incluyeron 24 pacientes. La sobrevida global fue de 58.04%. La presencia de alteraciones cromosómicas, particularmente en el cromosoma 21, afectó significativamente la sobrevida. La edad menor a cinco años, la histología anaplásica, la quimioterapia diferente a ifosfamida-carboplatino-etopósido y la resección parcial aumentaron el riesgo de morir. Conclusiones: Se confirman los factores descritos anteriormente en la literatura, incluyendo alteraciones cromosómicas. Se describe un nuevo desbalance en el cromosoma 21 en 30% de los pacientes.

BACKGROUND: Ependymomas constitute the third most common intracranial tumors in children. Risk factors include age, location, extent of surgical excision, and radiation therapy. Recently, chromosomal imbalances have been described. OBJECTIVE: Determine global survival of patients with ependymomas according to different prognostic factors. METHODS: We reviewed the medical charts of every pediatric patient with ependymoma from 1996 to 2005. Genomic imbalances were determined using comparative genomic hybridization (CGH). Survival was calculated using the Kaplan and Meier method. We used the Log Rank test for each risk factor. Death risk was calculated by odds ratio (OR). RESULTS: We included 24 patients. Global survival was 58.04%. The presence of chromosomal imbalances, particularly in chromosome 21, significantly affected survival Being under 5 years of age, anaplastic histology, chemotherapy other than ICE (ifosfamida-carboplatin-etoposide) and partial resection increased the risk of death. CONCLUSIONS: Known risk factors were confirmed in our study, including chromosomal imbalances. We describe a new chromosomal imbalance in chromosome 21 among 30% of study participants.