Wakabayashi Y, Kuroda M, Yachida M, Matsuda H, Inoue S, Ishida J, Abe K, Amino S
Department of Radiology, Tokyo Medical College Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. 1990 Oct 25;50(10):1199-205.
Twenty-nine patients with ovarian malignant tumor were studied by means of magnetic resonance (MR) imaging. The findings were compared with surgical findings concerning tumor invasion to the bladder and to the uterus. The bladder invasion was evaluated with MRI and classified as follows: (1) Huge amount of fat, colon or small intestine between the tumor and the bladder. (2) Thin fat layer between the bladder and the tumor, (3) No fat layer, and the bladder was smoothly compressed by the tumor, (4) No fat layer with local deformity of the bladder caused by the tumor existed, or tumor protruded into the bladder. In group (4), 4 of 5 cases were proved to have bladder invasion. However in group (3), half of the 14 cases showed bladder invasion and the others showed no invasion. Criteria used in MRI analysis of uterine invasion was as follows: (1) Fat layer between the uterus and the tumor, (2) Fat layer between the tumor and the bladder, and the uterine contour was indistinct, (3) No fat layer and deformity of the uterus was apparent. In group (3), many cases showed uterine invasion, but 4 cases out of 12 cases did not. In the group (2), 3 out of 11 cases showed uterine invasion. The diagnostic ability of uterine invasion was not as accurate as in cases of the bladder invasion. The MRI sagittal plane can directly show the relationship between the uterus, the bladder and tumor, so that diagnosis of tumor invasion by MRI is superior to CT. However MRI could not differentiate between adhesion and invasion.
对29例卵巢恶性肿瘤患者进行了磁共振（MR）成像研究。将研究结果与肿瘤侵犯膀胱和子宫的手术结果进行了比较。通过MRI评估膀胱侵犯情况并分类如下：（1）肿瘤与膀胱之间有大量脂肪、结肠或小肠。（2）膀胱与肿瘤之间有薄脂肪层。（3）无脂肪层，膀胱被肿瘤平滑压迫。（4）无脂肪层且存在肿瘤导致的膀胱局部变形，或肿瘤突入膀胱。在第（4）组中，5例中有4例被证实有膀胱侵犯。然而在第（3）组中，14例中有一半显示有膀胱侵犯，其余未显示侵犯。MRI分析子宫侵犯所采用的标准如下：（1）子宫与肿瘤之间有脂肪层。（2）肿瘤与膀胱之间有脂肪层且子宫轮廓不清。（3）无脂肪层且子宫有明显变形。在第（3）组中，许多病例显示有子宫侵犯，但12例中有4例未显示。在第（2）组中，11例中有3例显示有子宫侵犯。子宫侵犯的诊断能力不如膀胱侵犯病例准确。MRI矢状面可直接显示子宫、膀胱与肿瘤之间的关系，因此MRI对肿瘤侵犯的诊断优于CT。然而MRI无法区分粘连和侵犯。
