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Japanese Journal of Clinical Oncology 9:255-260 (1979)
© 1979 Foundation for Promotion of Cancer Research

research-article

Dysplasia of the Uterine Cervix

KIYOZO KISHI, M.D., TERUYUKI HIROTA, M.D., TATSUHIRO KASAMATSU, M.D.*, TAKAHIKO SONODA, M.D.*, YOSHI MATSUMOTO, M.D.*, KAZUO OHMI, M.D.*, KENJIRO TANEMURA, M.D.*, RYUICHIRO TSUNEMATSU, M.D.* and TAKURO YAMADA, M.D.*

Pathology Division, National Cancer Center Research Institute Tokyo
*Department of Gynecology, National Cancer Center Hospital Tokyo

Reprint requests: Kiyozo Kishi, M.D., Pathology Division, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104, Japan

Received September 29, 1979; In order to evaluate the significance of dysplasia lesions of the uterine cervix, 6,587 cervical biopsies in the five years from 1974 to 1978 were reviewed. The average age at the time of diagnosis was: dysplasia, 44.4 years; carcinoma in situ, 48.7 years; microinvasive carcinoma, 50.9 years; invasive carcinoma, 56.6 years. This group consisted of 653 cases of dysplasia, 194 of carcinoma in situ, 75 of microinvasive carcinoma, and 536 of invasive carcinoma. On the basis of follow-up studies of 166 dysplasia patients, the lesions of nine (5.4%) of these patients progressed to in situ carcinoma. These nine patients were kept under observation for periods varying between 12 and 41 months. These findings, in addition to the similar distribution of dysplasia and carcinoma in situ on the cervix, suggest that dysplasia is a stepping stone to carcinoma.


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