title: Radiation oncogenesis.
abstract: Two patients who were treated with therapeutic doses of ionizing radiation for primary carcinoma of the thyroid and cervix developed a second malignancy in the organs included in the field of radiation 10 and 14 years later, respectively. These two patients, whose second malignancies meet all of the criteria to be classified as radiation induced cancer, are presented.
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology; D002294:Carcinoma, Squamous Cell / Q000209:etiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D010610:Pharyngeal Neoplasms / Q000209:etiology; D011878:Radiotherapy / Q000009:adverse effects*; D012004:Rectal Neoplasms / Q000209:etiology; D013964:Thyroid Neoplasms / Q000532:radiotherapy; D002583:Uterine Cervical Neoplasms / Q000532:radiotherapy