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Five patients with diagnosed breast cancer who developed meningiomas are reported. The literature contains reports of an additional 25 such patients. Some authors have noted hormonal sensitivity and the presence of hormone receptors in some meningiomas. Because breast cancer is a common tumor of women, it is probable that any association between breast cancer and meningioma is fortuitous. Two patients in this small series each had a sister with breast cancer, one of them also had three other first-degree relations with colon cancer. Three of the patients had other tumors as well as breast cancer. It is important to fully investigate brain lesions in patients with breast cancer so that potentially curable meningiomas are not mistaken for metastases.

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