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虽1970和1973年FIGO相继更改过宫颈癌Ⅰa期的定义,但未提出任何组织学诊断标准。1985年FIGO再次改变Ⅰa期定义,首次包括了测量法,规定Ⅰa期包括所有宫颈的临床前癌,即仅通过显微镜诊断。Ⅰa期又分为两组;Ⅰa_1为微小的,显微镜下可见的间质浸润;Ⅰa_2期为镜下发现的能够测量的病变。测量的最大浸润深度应距病变起源处表面上皮或腺体上皮基底部≤5mm,其水平伸展必须≤7mm。大于此范围的病变应定为Ⅰb期。无论是静脉或是淋巴管受累,应不改变分期。作者试图评价FIGO新定义的合理性,而进行了此项宫颈癌回顾性临床病理学研究。作者复习了1975～1985年在Kyushu大学医院行手术治疗的118例符合FIGO新定义的标本。118例组织学特征评价包括:间质浸润深度、水平扩展
Although 1970s and 1973 FIGO have changed the definition of cervical cancer Ⅰ a, but did not propose any diagnostic criteria for histology. FIGO again changed the definition of stage Ia in 1985, for the first time included the measurement method, which stipulated that stage Ia included preclinical cancers of all cervixes, ie, only by microscopic diagnosis. Ⅰ a period is divided into two groups; Ⅰ a_1 is a tiny, microscopic examination of the interstitial infiltration; Ⅰ a2 phase to detect lesions can be measured under the microscope. The maximum depth of invasion should be measured from the surface of the lesion at the surface of the epithelial base or glandular epithelium ≤ 5mm, the horizontal extension must be ≤ 7mm. Larger than this range of lesions should be defined as Ⅰ b period. Whether it is vein or lymphatic involvement, should not change the staging. The authors attempted to evaluate the rationality of the new definition of FIGO while conducting a retrospective clinical pathology study of cervical cancer. The authors reviewed 118 patients who met the new definition of FIGO from 1975 to 1985 undergoing surgery at Kyushu University Hospital. 118 cases of histological features include: depth of interstitial infiltration, horizontal expansion