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目的提高对头颈部罕见部位副神经节瘤的认识和诊断水平。方法搜集1990年1月至2003年12月经手术病理证实的6例头颈部罕见部位副神经节瘤,详细分析其临床和影像学表现。结果2例位于颈静脉窝,其中1例侵入鼓室;1例突入后颅窝;1例局限于鼓室;1例发生于左C1～C2椎体后部,肿瘤破坏椎板骨质,侵入椎管和后颅窝,浸润硬膜;1例位于颏下口底;1例位于眶内肌锥外。B超、CT和MRI显示肿瘤为实性,肿瘤内及其周围血管增多,强化明显,MR血管成像(MRA)和DSA均显示肿瘤染色和丰富的供血动脉。结论这些肿瘤虽然发生的部位不典型,但是具有共同的影像学特点,结合临床术前多可以诊断。
Objective To improve the understanding and diagnosis of paraganglioma in rare parts of head and neck. Methods From January 1990 to December 2003, 6 cases of paraganglioma, a rare site of the head and neck, confirmed by surgery and pathology were collected and their clinical and radiographic findings were analyzed in detail. Results One case was confined to the tympanic cavity. One case was confined to the tympanic cavity. One case occurred in the posterior part of the left C1-C2 vertebra. The tumor destroyed the lamina bone and invaded the spinal canal And posterior fossa, infiltrating the dura mater; one was located at the base of the chin mouth; one was outside the orbital muscular cone. B ultrasound, CT and MRI showed that the tumor was solid, the blood vessels in and around the tumor increased, and the enhancement was obvious. MR angiography (MRA) and DSA showed tumor staining and abundant blood supply artery. Conclusion Although these tumors occur atypical sites, they share common imaging features and can be diagnosed in combination with clinical preoperative imaging.