title: [Use of the TDF factor in soft roentgen radiotherapy].
abstract: In a prospective randomized study 164 patients with altogether 142 basal cell carcinomas and 24 squamous cell carcinomas were each irradiated with a single dose of 3 Gy daily on 20 consecutive days, giving a total dose of 60 Gy (TDF factor 123). In another group of 155 patients, with altogether 148 basal cell carcinomas and 20 squamous cell carcinomas, each patient received 4 Gy 3 times per week until 12 irradiations had been administered, giving a total dose of 48 Gy (TDF factor 103). The cure rates in patients with basal cell carcinomas did not differ between the two groups: 90% were cured by the higher total dose and 92%, by the lower dose. The high dose regimen brought about a cure in 96% of squamous cell carcinomas, in contrast to only 85% with the low dose regimen. Owing to the small number of patients the difference was not statistically significant. These data demonstrate that basal cell carcinomas can be controlled by low-dose irradiation regimens. Squamous cell carcinomas may have a lower radiosensitivity than basal cell carcinomas and may require higher doses.
authors.affiliation: Dermatologische Klinik und Poliklinik, Ludwig-Maximilians-Universität München.
authors.forename: M
authors.initials: M
authors.lastname: Landthaler
authors.forename: O
authors.initials: O
authors.lastname: Braun-Falco
mesh_terms: D000368:Aged; D002280:Basal Cell Carcinoma / Q000532:radiotherapy*; D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy*; D005153:Facial Neoplasms / Q000532:radiotherapy*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011879:Radiotherapy Dosage; D016032:Randomized Controlled Trials as Topic; D012878:Skin Neoplasms / Q000532:radiotherapy*
vernacular_title: Anwendung des TDF-faktors in der Röntgenweichstrahlentherapie.