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A case history is presented of a 41-year-old woman who developed an extraskeletal osteosarcoma of the upper chest wall at the site of therapeutic irradiation for breast carcinoma 8 years previously. The relation of the sarcoma to the irradiation was supported by the coexistence of a profound radiation angiitis. The development of this neoplasm, despite the relatively low total radiation dosage, is distinctly unusual.
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Alpert et al. (1973) studied this question.
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