title: [Non-randomized study on the effects of preoperative radiotherapy and daily administration of low-dose cisplatin against those of radiotherapy alone for oral cancer--effects on local control, control of metastases, and overall survival].
abstract: Cisplatin is a known radiation modifier. Our previous study suggested that daily administration of low-dose cisplatin enhanced the efficacy of radiotherapy against primary oral squamous carcinoma. In this paper, we follow the patients who participated in the previous study and survey the benefit of combination low-dose cisplatin in improving local control, prevention of metastases, and overall survival. This study included patients with surgically resectable advanced oral tumors. Ten patients underwent preoperative radiotherapy of 30-40 Gy/15-20 days with concomitant daily administration of low-dose cisplatin (5 mg/body or 5 mg/m2). Ten other patients received external radiotherapy alone. All patients then underwent a planned radical tumor resection. No significant difference was see in loco-regional control rates (primary: 86 vs. 88%, neck: 83 vs. 78% at 48 months) or incidence of metastasis (70 vs. 64%) between the two groups. Nor was there a significant difference in the overall survival rate (60 vs. 66%). The results of this study suggest that the concomitant use of daily administration of low-dose cisplatin with preoperative radiation brings no statistically significant benefit in improving local control and survival rate in patients with advanced resectable oral cancer.
authors.affiliation: Dept. of Dentistry and Oral Surgery, Shinshu University School of Medicine.
authors.forename: H
authors.initials: H
authors.lastname: Kurita
authors.forename: A
authors.initials: A
authors.lastname: Ohtsuka
authors.forename: H
authors.initials: H
authors.lastname: Kobayashi
authors.forename: K
authors.initials: K
authors.lastname: Kurashina
authors.forename: N
authors.initials: N
authors.lastname: Shikama
authors.forename: M
authors.initials: M
authors.lastname: Oguchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000970:Antineoplastic Agents / Q000008:administration & dosage*; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy* / Q000401:mortality / Q000532:radiotherapy*; D002945:Cisplatin / Q000008:administration & dosage*; D003131:Combined Modality Therapy; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000532:radiotherapy*; D009362:Neoplasm Metastasis / Q000517:prevention & control; D011300:Preoperative Care; D011379:Prognosis; D011838:Radiation-Sensitizing Agents / Q000008:administration & dosage*; D011879:Radiotherapy Dosage; D015996:Survival Rate
chemical_list: D000970:Antineoplastic Agents; D011838:Radiation-Sensitizing Agents; D002945:Cisplatin