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Spontaneous regression of breast carcinoma: Follow‐up report and literature review

A case of spontaneous complete regression of metastatic breast carcinoma (malignant pleural effusion and bone metastases) with previously reported from M. D. Anderson Hospital and Tumor Institute. The patient did not receive any form of hormonal manipulation or systemic chemotherapy. This patient has now relapsed after 72 months of spontaneous complete remission, and a follow‐up of her clinical history is presented. A search of the literature for previously reported instances of spontaneous regression of breast carcinoma indicates that this event is exceedingly rare.