Yanal Omari1, Ahmad A Karkash1, Razan A Mansour1, Nisreen Amayiri2, Maisa Swaidan3, Maysa Al-Hussaini4. 1. Faculty of Medicine, University of Jordan, Amman, Jordan. 2. Department of Pediatrics, King Hussein Cancer Center (KHCC), Amman, Jordan. 3. Department of Radiology, King Hussein Cancer Center (KHCC), Amman, Jordan. 4. Department of Pathology and Laboratory Medicine, King Hussein Cancer Center (KHCC), 202 Queen Rania Street, P.O. Box 1269 Al-Jubeiha, Amman, 11941, Jordan. mhussaini@khcc.jo.
Abstract
PURPOSE: Medulloepithelioma is a rare brain tumor that has been classified as embryonal tumor with multilayered rosettes (ETMR) if it harbors C19MC amplification. In rare instances, it shows evidence of heterologous differentiation. METHODS: We report a case of a 10-year-old female who presented with headache, squint, and minimal left sided weakness of 1 week duration. RESULTS: Microscopy revealed a small round blue cell tumor with focal glandular and tubular differentiation. In one focus, well-developed osteoid was identified. The tumor labeled with LIN28A immunostain. CONCLUSIONS: Unusual features can be encountered in medulloepithelioma which should be in the differential diagnosis of CNS embryonal tumors. Full description of the case with review of the literature and comparison between cases with and without heterologous elements is presented.
PURPOSE:Medulloepithelioma is a rare brain tumor that has been classified as embryonal tumor with multilayered rosettes (ETMR) if it harbors C19MC amplification. In rare instances, it shows evidence of heterologous differentiation. METHODS: We report a case of a 10-year-old female who presented with headache, squint, and minimal left sided weakness of 1 week duration. RESULTS: Microscopy revealed a small round blue cell tumor with focal glandular and tubular differentiation. In one focus, well-developed osteoid was identified. The tumor labeled with LIN28A immunostain. CONCLUSIONS: Unusual features can be encountered in medulloepithelioma which should be in the differential diagnosis of CNS embryonal tumors. Full description of the case with review of the literature and comparison between cases with and without heterologous elements is presented.
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