نتایج جستجو برای: askin tumor
تعداد نتایج: 427984 فیلتر نتایج به سال:
A 24-year-old woman was admitted due to dyspnea on exertion. A chest roentgenogram revealed a massive tumor originating from the right anterior chest wall when pleural effusion was drained. Diagnosis of Askin tumor was made based on light microscopic findings characterized by composing with small round cells, immunocytochemical findings suggestive of neuroectodermal origin, and cytogenetic anal...
A rare case of peripheral primitive neuroectodermal tumor (PNET) is reported. A 68-year-old woman complaining of lumbago was admitted to our hospital. Diagnosis was made based on pathological findings characterized by Homer Wright-type rosettes. Ultrastructural examination showed the presence of neurosecretory granules and short cytoplasmic processes, which were highly suggestive of neural diff...
Introduction: Ewing sarcoma family of tumors (ESFT) are a group of small round cell tumors showing varying degrees of neuroectodermal differentiation with Ewing sarcoma being the least differentiated. Primitive neuroectodermal tumors (PNET) show neuroectodermal differentiation by light microscopy, immune histochemistry (IHC) or electron microscopy [1]. According to WHO classification of bone an...
SUMMARY Askin tumor is a peripheral neuroepithelioma originating in chest wall. It is a very aggressive tumor and with Ewing's sarcoma are the most frequent tumors of chest wall. The tumor is composed of small round or ovoid cells arranged in sheets with pseudorossette formation. Some times around vessels, glycogen staining is some times positive in H & E but always positive in E.M. In E.M be...
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