[Clinical statistics of stage I testicular tumor].
OBJECTIVE
A survey of stage I testicular tumors in the Chugoku-Shikoku district was taken in order to explore the clinical characteristics.


METHODS
Three hundred and forty eight cases of stage I testicular tumor treated at 46 facilities in the Chugoku-Shikoku district between 1984 and 1992 were collected. Subjects' background factors, treatment methods and prognosis were studied.


RESULTS
Tissue types were 249 (71.6%) seminoma and 99 (28.4%) non-seminoma. Adjuvant therapy for seminoma cases included 138 post-operative radiotherapy (4 recurrences, 3 cancer deaths), 57 chemotherapy (no recurrences, 2 contralateral testis tumor cases) and 48 were under surveillance (no recurrence). Adjuvant therapy for non-seminoma cases included 47 chemotherapy (1 recurrence) and retroperitoneal lymph node dissection was performed on 6 cases. Forty cases were under surveillance (1 recurrence). Of 8 (2.3%) cases with recurrence, 6 showed onset within two years and 2 after two years. Four of the 8 cases with recurrence were seminoma (1.1% of seminoma cases) and the other 4 were non-seminoma (4.0% of non-seminoma cases). All 3 (0.9% of all cases) of the cancer death cases were seminoma that received post-operative radiotherapy, while there were no cancer deaths in non-seminoma cases.


CONCLUSIONS
Prognosis of stage I testicular tumor is good. Although the recurrence rate was higher in non-seminoma cases, cancer deaths were only observed in seminoma cases.
Tsushima
T
T
Department of Urology, Okayama University Medical School.
Kumon
H
H
Ohmori
H
H
Furukawa
Y
Y
Tanaka
H
H
Nakahara
M
M
Usui
T
T
Yamamoto
M
M
Naito
K
K
Hirakawa
S
S
Miyagawa
I
I
Fujita
K
K
Takenaka
I
I
Kanayama
H
H
Kagawa
S
S
Yokoyama
M
M
Takeuchi
M
M
Yamashita
M
M
Shuin
T
T
Sumiyoshi
Y
Y
Takigawa
H
H
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D018236:Carcinoma, Embryonal / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D003131:Combined Modality Therapy; D006801:Humans; D007223:Infant; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology; D009367:Neoplasm Staging; D011379:Prognosis; D018239:Seminoma / Q000453:epidemiology* / Q000473:pathology / Q000601:surgery; D013724:Teratoma / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D013736:Testicular Neoplasms / Q000453:epidemiology* / Q000473:pathology / Q000601:surgery