Watarai J, Seino Y, Kobayashi M, Shindo M, Kato T
Department of Radiology, Akita University School of Medicine, Japan.
Acta Radiol. 1993 Sep;34(5):492-5.
CT findings for retropharyngeal lymph node metastasis in 25 patients with histologically proven carcinoma of the maxillary sinus and with no prior treatment were evaluated retrospectively. Four lateral retropharyngeal node metastases (16%, 4/25) could be identified by CT. All retropharyngeal metastatic nodes were located between the ipsilateral internal carotid artery and the longus colli muscle at the level of the first cervical vertebral body. The metastatic nodes ranged from 8 mm to 35 mm in size at the long axis. The risk of retropharyngeal node metastasis depends on the degree of carcinoma involvement to the posterior nasal cavity, the posterior ethmoid sinuses, the sphenoid sinuses, the palate (soft and hard) and the nasopharynx. This study indicates that CT is useful for detecting these lymph node metastases.
回顾性评估了25例经组织学证实为上颌窦癌且未接受过先前治疗患者的咽后淋巴结转移的CT表现。CT可识别出4例咽后外侧淋巴结转移（16%，4/25）。所有咽后转移淋巴结均位于第一颈椎水平同侧颈内动脉与颈长肌之间。转移淋巴结长轴大小在8mm至35mm之间。咽后淋巴结转移风险取决于癌肿累及后鼻腔、后筛窦、蝶窦、腭（软腭和硬腭）及鼻咽的程度。本研究表明CT对检测这些淋巴结转移有用。
