Uterine cervical carcinoma after therapy: CT and MR imaging findings
Uterine cervical carcinoma after therapy: CT and MR imaging findings
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DOI：
10.1148/rg.234035001
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发表时间：
2003-07-01
期刊：
影响因子：
5.5
通讯作者：
Park, JG
中科院分区：
文献类型：
--
作者：
Jeong, YY;Kang, HK;Park, JG
宫颈癌是导致妇女死亡的最常见原因之一。计算机断层扫描（CT）和磁共振（MR）成像是宫颈癌治疗后随访的主要方式。子宫切除术后正常阴道袖带在t2加权MR图像上表现为光滑的低信号强度肌壁。早期（治疗后2-3个月）和MR成像中肿瘤信号强度和体积的显著降低表明对放射治疗有良好的反应。复发部位为骨盆、淋巴结和远处部位。盆腔复发在增强CT上表现为异质性强化肿块，在t2加权MR成像上表现为异质性高信号强度肿块。淋巴结复发范围从分散的、最小肿大的淋巴结到大的、丛状淋巴结肿块。淋巴结肿瘤浸润的判断基于大小；大多数研究者认为短轴直径大于1cm的淋巴结是转移性的。远处转移通常是由于疾病复发，发生在腹部、胸部和骨骼。了解宫颈癌患者的正常治疗变化和复发肿瘤谱对于准确解释随访CT和MR图像非常重要。
Cervical carcinoma is one of the most frequent causes of death in women. Computed tomography (CT) and magnetic resonance (MR) imaging are the primary modalities for follow-up of treated cervical carcinoma. A normal vaginal cuff after hysterectomy appears as a smooth, low-signal-intensity muscular wall on T2-weighted MR images. Early (2-3 months after treatment) and significant decreases in the signal intensity and volume of the tumor at MR imaging indicate a good response to radiation therapy. Sites of recurrence are the pelvis, 1 h nodes, and distant sites. Pelvic recurrence appears as a heterogeneously enhancing mass at contrast material-enhanced CT and often appears as a heterogeneous, high-signal-intensity mass at T2-weighted MR imaging. Lymph node recurrence ranges from scattered, minimally enlarged nodes to large, conglomerate nodal masses. Determination of neoplastic infiltration of lymph nodes is based on size; most researchers consider nodes greater than 1 cm in short-axis diameter to be metastatic. Distant metastases are usually due to recurrent disease and occur in the abdomen, thorax, and bone. Knowledge of the normal therapeutic changes and the spectrum of recurrent tumor in patients with cervical carcinoma is important for accurate interpretation of follow-up CT and MR images.