Maireche Ammar, Lounici Nazim, Saadat Mohammed Rafiq, Atik Ouassim, Boucheffa Farouk, Maireche Elmouiz Lidine Allah, Mebarki Houssameddine, Benadjel Melissa, Bendjama Oumaima, Seddiki Karima
Central Military Hospital, Ain Naadja, Algiers, Algeria.
Hospital Salim Zmirli, Algiers, Algeria.
Radiol Case Rep. 2025 Apr 8;20(6):3134-3139. doi: 10.1016/j.radcr.2025.03.034. eCollection 2025 Jun.
Medulloblastoma is the most frequent malignant brain tumor in children. Originating in the cerebellum, they are typically intra-axial tumors. In adults, they represent less than 1% of brain tumors. However, the occurrence of extra-axial medulloblastoma is possible but extremely rare, and slightly more frequent in the adult population. We present a rare case of extra-axial medulloblastoma, diagnosed in a 22-year-old male, through advanced imaging techniques, followed by confirmation through anatomopathological examination. This case calls attention to the necessity of knowledge of the various diagnostic possibilities when interpreting radiological images, leading to enhanced patient care and furthering our understanding of these exceptional entities.
髓母细胞瘤是儿童中最常见的恶性脑肿瘤。它起源于小脑，通常为轴内肿瘤。在成人中，髓母细胞瘤占脑肿瘤的比例不到1%。然而，髓母细胞瘤发生于轴外的情况虽有可能但极为罕见，在成人中略为常见。我们报告一例罕见的轴外髓母细胞瘤病例，该病例发生在一名22岁男性身上，通过先进的成像技术得以诊断，随后经解剖病理学检查得以确诊。该病例提醒我们，在解读放射影像时了解各种诊断可能性的必要性，这有助于提高患者护理水平，并加深我们对这些特殊病例的认识。
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