舌癌のMRI診断 : CT像との感度の比較と病理組織像との比較 Diagnosis of Tongue Cancer by MRI : Comparison of sensilivity between MRI and CT, and with histopathological finding
今回われわれは, 舌癌原発巣における腫瘍範囲のMR像診断について検討を行った。対象は切除手術を行った舌扁平上皮癌T2～T4症例でMR像, CT像を撮影した42例である。MR像の感度は90.9%, CT像では35.1%で, 有意差をもってMR像の方が高かった。T1WI, T2WI, T1Gd-DTPAの中ではT1Gd-DTPAが最も感度が高かった。<BR>MR像と触診の比較では腫瘍範囲に差はなかった。しかし, MR像と病理組織像では, MR像の方が短径では約40～50%, 深さでは約60～70%大きく検出された。
In this study, We examined the utility of MRI diagnosis concerning the tumor extent in the primary lesion of tongue cancer in comparison with other manipulations. The subjects were 42 patients who had received a surgical intervention for S. C. C. of the tongue graded T2-T4 and examined by MRI and CT. The sensilivity by MRI was 90.9% which was significantly higher than the value by CT of 35.1%. Among T1WI, T2WI and T1Gd-DTPA, showed the highest sensilivity. As for the difference in the tumor extent indicated by MRI and by palpitation in relation to the actually resected tumor, no difference was observed between MRI and palpitation. In the histopathological finding as compared with MRI, however, MRI could recognize the shorter diameter about 40-50% and the depth about 60-70% as large as those recognized by histopathological examination.
日本口腔腫瘍学会誌 13(4), 235-238, 2001-12-15
Japanese Society of Oral Oncology