口腔扁平上皮癌の頸部リンパ節転移における超音波診断の意義

概要

論文の詳細を見る
Accurate and early diagnosis of cervical lymph node metastasis is essential to control metastatic lesions of oral cancer and thus improve the results of treatment. Cervical lymph node metastasis is usually diagnosed by palpation, computerized tomography (CT), ultrasonography (US), and magnetic resonance imaging (MRI). Thirty-three patients (25 male, 8 female) with oral primary squamous cell carcinoma were examined for cervical lymph node metastasis by palpation, CT, and US before undergoing radical neck dissection. The results of these examinations were then compared with the histopathological findings, and the accuracy of each method was assessed. The ultrasonography equipment we used was a real-time unit equipped with a high frequency sectional transducer (7.5 MHz). US revealed cervical lymph node metastasis in lymph nodes greater than 10 mm in diameter (p <0.01), round in shape (p <0.01), having fuzzy borders (p< 0.01), and a heterogeneous internal echo pattern (p < 0.01). The accuracy rate of US was 96%, and superior to the 92% for CT and 80% for palpation. This confirms that US is an effective method for detecting cervical lymph node metastasis, with the advantage of being non-invasive and allowing repeated examinations in real-time.
東京女子医科大学の論文
1997-04-25