Prognostic factors including neoadjuvant chemotherapy in Mexican children with neuroblastoma.

Introduction: There are several prognostic factors in children with neuroblastoma that have been outlined in the international literature.

Material And Methods: A retrospective study was carried out analysing the medical records of patients with the pathological diagnosis of neuroblastoma seen at the Department of Oncology from the Instituto Nacional de Pediatriá (Mexico) between January 1984 to January 1997. A total of 32 clinical prognostic factors were assess in our population.

Diagnostic and therapeutic approach to sialoblastoma: report of a case.

The natural history of a rare parotid tumor, the sialoblastoma (embryoma) is reported. It is a blastematous neoplasm said to recapitulate the epithelial differentiation of a gland at various stages of development. The tumor grew in a period of 5 years (from shortly after birth until it was excised) to a firm asymptomatic mass measuring 5 cm in greatest diameter.