Li XP, Liu B, Huang B, Mao JQ, Liang YJ, Huang WL, Mo JQ. Spiral CT and magnetic resonance imaging for staging of esophageal cancer.
Shijie Huaren Xiaohua Zazhi 2014;
22:4124-4128. [DOI:
10.11569/wcjd.v22.i27.4124]
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Abstract
AIM: To assess the value of spiral computed tomography (CT) and magnetic resonance imaging (MRI) in esophageal carcinoma tumor-node-metastasis (TNM) staging.
METHODS: One hundred esophageal cancer patients underwent spiral CT and MRI examinations. The imaging features of plain and contrast-enhanced CT and MRI of esophageal carcinoma were observed. Using the pathological result as the standard, the value of spiral CT and MRI in TNM staging of esophageal cancer was analyzed.
RESULTS: Pathological examinations revealed 81 cases of squamous cell carcinoma, 16 cases of adenocarcinoma, and 3 cases of small cell undifferentiated carcinoma. Lesion length ranged from 20 mm to 11 mm, with an average value of 6.4 mm ± 2.1 mm. Sixty-eight patients had regional lymph node metastasis. Pathological TNM classification included 9 cases of T1 stage, 23 cases of T2 stage, 40 cases of T3 stage, 28 cases of T4 stage, 32 cases of N0 stage, and 68 cases of N1 stage. Spiral CT TNM classification included 6 cases of T1 stage, 13 cases of T2 stage, 47 cases of T3 stage, 34 cases of T4 stage, 52 cases of N0 stage, and 48 cases of N1 stage. MRI TNM classification included 8 cases of T1 stage, 26 cases of T2 stage, 41 cases of T3 stage, 25 cases of T4 stage, 35 cases of N0 stage, and 65 cases of N1 stage. The diagnostic sensitivity and accuracy of MRI for stages T1 and T2 esophageal cancer were significantly higher than those of spiral CT (P < 0.05). The specificity of MRI for diagnosis of stage N0 esophageal cancer was significantly higher than that of spiral CT, but the sensitivity was significantly lower than that of spiral CT (P < 0.05). In the diagnosis of stage N1 esophageal cancer, the diagnostic sensitivity of MRI was significantly higher than that of spiral CT (P < 0.05). The diagnostic accuracy of combined MRI and spiral CT for T stage and N stage was significantly better than that of either of the two modalities (P < 0.05).
CONCLUSION: MRI have high value in the diagnosis of stages T1 and T2 esophageal cancer, and combined application of CT and MRI in T staging and N staging is significantly better their single application.
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