Watanabe H
Nihon Sanka Fujinka Gakkai Zasshi. 1986 Dec;38(12):2267-73.
A drawback in ultrasonography, an indispensable technique in imaging ovarian malignancies, is that it sometimes shows false positive for benign tumors including dermoid cyst and ovarian endometriosis. To overcome this, the concurrent use of X-Ray CT seems warrantable and this led us to carry out the study summarized below. CT was carried out on 268 of 322 ovarian cases which had undergone ultrasonography. The results obtained were as follows. Sensitivity of ultrasonography and CT in ovarian malignancies were 82% and 88% respectively. Of the cases subjected to both techniques, those who were deemed false positive were 39 in ultrasonography and 12 in CT. Ultrasonographic imagings of dermoid cyst and ovarian endometriosis were classified on the basis of their patterns. The results obtained revealed that those in which it was difficult to discriminate the image from ovarian malignancy were types V and VI in dermoid cyst and type III-C in ovarian endometriosis. In both dermoid cyst and ovarian endometriosis, nearly a 100% accuracy rate was obtainable with CT for diagnosis of benign tumors. This strongly suggested that concurrent use of CT was required, in diagnosing ovarian diseases with the V or VI and III-C patterns referred to above.
超声检查是卵巢恶性肿瘤成像中不可或缺的技术，其一个缺点是有时对包括皮样囊肿和卵巢子宫内膜异位症在内的良性肿瘤显示假阳性。为克服这一问题，同时使用X射线CT似乎是合理的，这促使我们开展了如下总结的研究。对322例接受过超声检查的卵巢病例中的268例进行了CT检查。结果如下。超声检查和CT对卵巢恶性肿瘤的敏感性分别为82%和88%。在两种检查都做了的病例中，超声检查判定为假阳性的有39例，CT判定为假阳性的有12例。根据皮样囊肿和卵巢子宫内膜异位症的图像模式对其超声成像进行了分类。结果显示，皮样囊肿的V型和VI型以及卵巢子宫内膜异位症的III - C型很难与卵巢恶性肿瘤的图像区分开来。对于皮样囊肿和卵巢子宫内膜异位症，CT诊断良性肿瘤的准确率几乎可达100%。这有力地表明，在诊断上述V型或VI型以及III - C型的卵巢疾病时，需要同时使用CT。
