[A case of advanced colon cancer with peritoneal dissemination completely responding to TS-1].
A 55-year-old man was referred to us after transverse colostomy for intestinal obstruction caused by descending colon cancer with peritoneal dissemination. The colon lesion was palpated as a well-defined hard mass in the left lower abdomen and the disseminated lesion as a hard mass with an unclear border in the right lower abdomen. CEA level was 917 ng/ml at admission. Left hemicolectomy was performed for tumor reduction and TS-1 of 120 mg/day was started 6 days after surgery (4 weeks administration followed by a 2-week rest period). Administration discontinued due to nausea 4 weeks after commencement of the therapy, and restarted as a 2-week administration followed by a 2-week rest period. There has been no adverse reaction since then. Twenty-seven weeks after surgery, CEA level was reduced to 47 ng/ml and peritoneal dissemination was found to have disappeared upon physical examination and computed tomograph. TS-1 is expected to be an effective agent for the treatment of colon cancer with peritoneal dissemination.
Dept. of Gastroenterological Surgery, Osaka City University Graduate School of Medicine.
Shinichi
S
Taguchi
Harushi
H
Osugi
Masashi
M
Takemura
Shigeru
S
Lee
Masahiro
M
Kaneko
Yoshinori
Y
Tanaka
Yushi
Y
Fujiwara
Satoshi
S
Nishizawa
Hiroshi
H
Iwasaki
D000230:Adenocarcinoma / Q000188:drug therapy* / Q000556:secondary / Q000601:surgery; D000284:Administration, Oral; D000964:Antimetabolites, Antineoplastic / Q000627:therapeutic use*; D003082:Colectomy / Q000379:methods; D003110:Colonic Neoplasms / Q000188:drug therapy* / Q000473:pathology / Q000601:surgery; D003131:Combined Modality Therapy; D004334:Drug Administration Schedule; D004338:Drug Combinations; D006801:Humans; D008297:Male; D008875:Middle Aged; D010094:Oxonic Acid / Q000627:therapeutic use*; D010534:Peritoneal Neoplasms / Q000188:drug therapy* / Q000556:secondary*; D011725:Pyridines / Q000627:therapeutic use*; D005641:Tegafur / Q000627:therapeutic use*
D000964:Antimetabolites, Antineoplastic; D004338:Drug Combinations; D011725:Pyridines; C079198:S 1 (combination); D005641:Tegafur; D010094:Oxonic Acid