[Determination of residual lesion in remaining uterus after conization]

For the purpose of predicting the residual lesion in the remaining uterus after conization, the relationship between the residual lesion in the extirpated uterus and the foci in conization specimens was examined. Seventy-seven cases with severe dysplasia, carcinoma in situ and early invasive carcinoma of the uterine cervix diagnosed by punch biopsy were reviewed. The histopathologic diagnosis, the distance from the conization stump to the focus, the length of the focus along the cervical canal, the size of the conization specimens, the number of blocks containing a focus and so on were investigated. It is concluded that there is no residual lesion in the remaining uterus after conization when the following criteria are satisfied. The histopathologic diagnosis is Ia or less. The conization stump is not involved. The distance from the conization stump to the focus is more than 3.1mm and the length of the lesion along the cervical canal is less than 8.5mm. The distance from the conization stump to the focus is no more than 3.1mm, gland involvement is not recognized in this area and the length of the lesion along the cervical canal is less than 8.5mm.