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目的探讨螺旋CT在鼻咽癌(NPC)肿瘤分期中的价值。方法收集病理证实的鼻咽癌60例,均行平扫和增强扫描及多平面重建(MPR)。结果依据NPC浸润方式分为内外、前后、上下6个方向对肿瘤进行分期:T1期(内向)——肿瘤局限在鼻咽壁上3例;T2期(向外和向后)——肿瘤侵及咽旁浅间隙19例,侵及咽旁深间隙10例,侵及咽后间隙8例;T3期(向前和向下)——侵及鼻腔、上颌窦、蝶窦和口咽12例;T4期(向上)——侵及颅底、颅内8例。结论螺旋CT平扫加增强,然后再通过多平面重建(MPR),能清楚显示病灶大小、部位、范围及侵犯方向,对鼻咽癌的T分期更加准确。
Objective To investigate the value of spiral CT in the staging of nasopharyngeal carcinoma (NPC). Methods Sixty cases of pathologically confirmed nasopharyngeal carcinoma were collected and underwent plain and enhanced scan and multiplanar reconstruction (MPR). The results were divided into internal and external NPC according to the way of infiltration, before and after, up and down the six directions of the tumor staging: T1 (inward) - the tumor confined to the nasopharyngeal wall in 3 cases; T2 (outward and backward) - tumor invasion And parapharyngeal shallow space in 19 cases, invasion and parapharyngeal deep space in 10 cases, invasion and retropharyngeal space in 8 cases; T3 (forward and downward) - invasion and nasal cavity, maxillary sinus, sphenoid sinus and oropharynx in 12 cases ; T4 (up) - invasion and skull base, intracranial 8 cases. Conclusion Spiral CT scan plus enhancement, and then through multiplanar reconstruction (MPR), can clearly show the size of the lesion, location, extent and direction of invasion, the T stage of nasopharyngeal carcinoma more accurately.