Ultrasound estimation of myometrial invasion of endometrial cancer by intrauterine radial scanning

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Abstract
The myometrial invasion of endometrial cancer was estimated by using intrauterine radial-scan ultrasonography and classified into the following four groups: no myometrial invasion, superficial invasion (below one-third), moderate invasion (above one-third but below two-thirds), and deep invasion (above two-thirds). The myometrial invasions were further examined histologically on the removed uterus. In 26 of 32 cases (81.3%), estimations by intrauterine radial scans agreed with the histologic assessment. In each of the remaining six cases, estimations by radial scans were lower than those by histologic examination.