title: [A patient with metastatic gastrointestinal stromal tumor who responded to STI571].
abstract: We report a case of gastrointestinal stromal tumor (GIST) with multiple hepatic metastases that responded to tyrosine kinase inhibitor STI571. A 30-year-old woman underwent total gastrectomy on July 10, 1998, with a diagnosis of submucosal tumor of the stomach. Pathological analysis of the primary lesion revealed strong expression of c-kit, and it was diagnosed as GIST. The patient underwent tumor excision due to peritoneal recurrence on May 1, 2000 and November 13, 2000. On August 8, 2001, multiple liver metastases were detected by abdominal CAT scan. Treatment with STI571 at a dose of 400 mg/day for 28 days was initiated on September 14, 2000. CAT scan showed rapid tumor shrinkage after 3 weeks of treatment (reduction rate of 56%) and the response continued after 7 weeks of treatment (reduction rate of 71%). Thus, we evaluated the response as PR. Leukocytopenia, edema, diarrhea and nausea were observed; however, all toxicities were mild and tolerable. This case suggests the efficacy of STI571 for metastatic GIST.
authors.affiliation: Dept. of Surgery I, Iwate Medical University.
authors.forename: Masanori
authors.initials: M
authors.lastname: Terashima
authors.forename: Kaoru
authors.initials: K
authors.lastname: Abe
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Takeda
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Saito
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Uesugi
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kato
authors.forename: Kouichi
authors.initials: K
authors.lastname: Sato
authors.forename: Takeo
authors.initials: T
authors.lastname: Maekawa
mesh_terms: D000328:Adult; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D001549:Benzamides; D002455:Cell Division; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D000068877:Imatinib Mesylate; D008113:Liver Neoplasms / Q000188:drug therapy / Q000556:secondary; D010879:Piperazines / Q000627:therapeutic use*; D011505:Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors*; D011743:Pyrimidines / Q000627:therapeutic use*; D013274:Stomach Neoplasms / Q000188:drug therapy* / Q000473:pathology*
chemical_list: D000970:Antineoplastic Agents; D001549:Benzamides; D010879:Piperazines; D011743:Pyrimidines; D000068877:Imatinib Mesylate; D011505:Protein-Tyrosine Kinases