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目的 探讨甲状腺癌颈淋巴结转移的螺旋CT表现。方法 1998-111999-12资料齐全 44例甲状腺癌术前螺旋CT扫描图像进行回顾性分析 ,并与术后病理对照。观察淋巴结密度、分区和钙化 ,评价甲状腺癌颈淋巴结转移螺旋CT表现特点。结果 据颈淋巴结转移一般特征中心坏死和环状强化。还具有 ( 1)甲状腺癌颈转移淋巴结内细沙样钙化或斑块样钙化 ,( 2 )增强有明显强化 2 2例 ( 5 3.66% )。平扫CT值 2 8.0 0 5 0 .5 4HU ,增强后CT值 62 .85 14 5 .78HU ,并大多接近 10 0HU或大于 10 0HU。结论 甲状腺癌颈淋巴结转移除中心低密度囊变、坏死和环状强化 ,淋巴结内见细沙样和斑块样钙化提示甲状腺内占位为恶性 ,淋巴结增强多较明显 ,CT值多接近或大于 10 0HU。
Objective To investigate the spiral CT features of cervical lymph node metastases in thyroid cancer. Methods The data of 1998-111999-12 were complete. Spiral CT scans of 44 patients with thyroid carcinoma were retrospectively analyzed and compared with postoperative pathology. Lymph node density, zoning, and calcification were observed to evaluate the characteristics of spiral CT findings of cervical lymph node metastases in thyroid cancer. Results According to the general characteristics of cervical lymph node metastasis and ring enhancement. It also had (1) fine sand-like calcification or plaque-like calcification in the cervical metastatic lymph nodes of thyroid cancer, and (2) enhancement was significantly enhanced in 22 cases (53.66%). The plain CT value was 28.0050.54HU, the enhanced CT value was 62.85145.78HU, and most of them were close to 100HU or more than 100HU. Conclusions In addition to the central low-density cystic degeneration, necrosis, and ring enhancement in thyroid cancer, lymph node scans and plaque-like calcification in the lymph nodes suggest that the occupying position in the thyroid gland is malignant and the lymph node enhancement is more obvious. CT values are mostly close to or greater than 10 0HU.