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Gliosarcoma is a rare variant of glioblastoma multiforme characterized by a biphasic pattern of glial and mesenchymal differentiation. Fine-needle aspiration (FNA) is routinely employed to diagnose a number of primary and secondary malignancies in a variety of clinical settings. Herein, we describe the cytomorphologic features of a gliosarcoma metastatic to an extracranial location accompanied by corresponding clinico-radiologic and histopathologic findings in a 51-year-old man with a posterior mediastinal mass. The cytologic smears displayed a pleomorphic tumor comprised of spindled and epithelioid malignant cells. This case illustrates the ability of FNA to adequately diagnose a rare malignancy in the appropriate clinico-radiologic setting.
Acta Cytologica – Karger
Published: Jan 1, 2016
Keywords: Gliosarcoma; Fine-needle aspiration; Cytopathology; Extracranial metastasis; Glioblastoma multiforme
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