This is a report of a haemangiosarcoma involving the breast, spleen, liver, lungs, and subcutaneous tissue. There appears to be evidence that the tumour arose in the breast with the other sites representing metastases rather than a malignant transformation of multiple haemangiomatoses. Histologically the primary breast tumour appeared deceptively innocuous.
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Kessler et al. (1971) studied this question.
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