Abstract
OBJECTIVES: Primitive neuroectodermal tumors (PNETs) are aggressive neuroectodermal neoplasms and are originated from neuroectodermal tissues. They belong to a larger group of tumors known as Ewing tumors and are unusual in adult population. This case reports PNET in the oldest patient quoted in literature and established it as a differential diagnose to soft tissue tumors in advanced age. CASE REPORT: Female, 69 years, with swelling and pain in the nasal cavity. Images revealed expansive mass with soft tissues density occupying paranasal sinuses, nasopharynx and rhinopharynx diminishing the air column. Histopathologic findings were compatible with PNET. CONCLUSION: Primitive neuroectodermal tumors are more often found in children. This current case report call attention to a 69-years-old woman with a PNET on nasopharynx. Once the patients' age and the disease site are both extremely unusual, this case report seeks to contribute to the diagnosis of rare PNETs presentation forms.
Highlights
This analyis confirms the heterogeneity and agressiveness of primitive neuroectodermal tumor (PNET) tumors
Proposal: The autors review the chart of 13 patients with diagnosis of peripheral primitive neuroectodermal tumor (PNET), admitted at the Pediatric Department of Cancer Hospital between the period of 1989 and 1996
Patients and methods: All patients with PNET were analysed in a retrospective way, using epidemiologic clinical data, treatment and outcome
Summary
This analyis confirms the heterogeneity and agressiveness of PNET tumors. Multicentric studies are necessary for prognostic factors analysis. Proposta: A proposta desse estudo é a análise retrospectiva dos pacientes com diagnóstico de tumor neuroectodérmico primitivo (PNET), admitidos no Departamento de Pediatria do Hospital do Câncer no periodo de 1989 a 1996. Conclusão: A análise dos 13 pacientes com PNET e revisão da literatura demonstram a agressividade desse tumor.
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