[Differing progress patterns in cancer of the uterine cervix and variant effects of adjuvant chemotherapy based on histological type].

Clinical features of 644 surgically treated cases of cancer of the uterine cervix were analyzed according to their histological type. Large cell non-keratinizing carcinomas (L) showed node metastasis proportional to the grade of invasion in the cervix, and the lowest recurrence rate. Small cell non-keratinizing carcinomas (S) tended to have widely spread metastasis from an early stage of the primary lesion. Lateral recurrence from metastatic foci was common in this type. Keratinizing carcinomas (K) were localized in the cervix until the primary tumor became enlarged to a certain size. Central recurrence from invasive foci in the surrounding tissue or organ occurred more often than lateral recurrence in this type. Metastasis pattern of pure adenocarcinomas (A) was similar to that of S, but recurrence was delayed. Adenosquamous carcinomas (AS) showed a similar metastasis pattern to that of K, but recurrence was rapid and the ratio high. Prophylactic maintenance chemotherapy with Tegafur (800 mg/day) or Carboquone (0.5 mg/day) was performed in 187 cases for a period of 2 years after surgery. The effect of maintenance chemotherapy depended on the histological type. A marked effect was obtained in the groups of S and A, in which no recurrence has appeared so far. The recurrence rate of L dropped to 1/5 that of the control. However, unsatisfactory results were shown in the groups of K and AS including the keratinizing cell component. It is of significance that maintenance chemotherapy showed the highest effectiveness in S and A on which conventional adjuvant therapy, i.e. postoperative radiotherapy, has had the least effect. This has led us to consider that a proper selection of adjuvant therapies would contribute toward improving the postoperative prognosis of patients with cancer of the uterine cervix.