[Study of pre- and post-operative chemotherapy with oral 5-FU in patients with gastric cancer. Study Group of Pre- and Post-Operative Oral 5-FU in Gastric Cancer].
A cooperative study group consisted of 37 medical institutions evaluated the utility of pre- and post-operative chemotherapy with oral 5-FU by comparing with the historical controls of the patients treated with operation alone who were registered in Japanese Gastric Cancer List. Of 634 patients entered in this trial, 366 patients received curative operation at macroscopical stages II and III were studied as eligible cases. The relative 5-year survival at macroscopical stage II and III was 68.6% with 5-FU, significantly higher than 62.6% with operation alone (p < 0.05). Particularly, 5-year survival at macroscopical stage III was markedly different between 57.1% with 5-FU and 42.7% with operation alone. In order to make more effective comparison with the historical controls in this 1-arm trial, the background factors in 5-FU and control groups were matched in the ratio of 1:2 or 1:3 with respect to the following 4 factors: tumor site, S, N and macroscopical tumor type (by Kajitani's classification). As a result, the 5-year survival at macroscopical stages II and III was significantly higher with 5-FU (67.5%, 69.1%) than with operation alone (59.9%, 59.8%), and in particular this tendency was more marked at macroscopical stage III. These results suggest the usefulness of adjuvant chemotherapy in macroscopical stage III gastric cancer.
Division of Surgery, Chiba Cancer Center Hospital.
Y
Y
Ohmori
T
T
Kajitani
H
H
Akiyama
O
O
Abe
S
S
Kusama
N
N
Sakakibara
T
T
Sakabe
H
H
Sugano
T
T
Nakajima
K
K
Miwa
D000284:Administration, Oral; D017024:Chemotherapy, Adjuvant; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage*; D006801:Humans; D008297:Male; D009367:Neoplasm Staging; D012042:Registries; D013274:Stomach Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology / Q000601:surgery; D015996:Survival Rate
D005472:Fluorouracil