头颈部外周原始神经外胚层肿瘤的影像学诊断
【目的】探讨头颈部外周型原始神经外胚层肿瘤(peripheral primitive neuroectrodermal tumor,pPNET)的影像学诊断特征。【方法】回顾性分析8例经病理证实的头颈部外周型PNET的CT和MRI表现,6例行CT检查,2例行MRI检查。【结果】8例中,颌面部2例,左下颌骨旁、左外耳道、左上颌窦、左颈动脉鞘区、右颞下窝、左腮腺各1例。6例CT扫描病例中,4例表现为边界不清的软组织肿块,密度不均匀,3例伴坏死、囊变。2例边界清,密度均匀。增强后明显不均匀强化4例,均匀强化2例。6例CT扫描病例均未见钙化。右颌面部病灶造成相邻骨质吸收,左上颌窦、左下颌骨旁病灶破坏相...
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Format: | Article |
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Language: | zho |
Published: |
Editorial Office of Journal of Sun Yat-sen University
2008-01-01
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Series: | Zhongshan Daxue xuebao. Yixue kexue ban |
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Online Access: | http://xuebaoyx.sysu.edu.cn/zh/article/43579951/ |
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