早期乳癌術後に骨転移と鑑別が困難であった頭蓋骨血管腫の1例

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  • A CASE OF EARLY BREAST CANCER WITH A HEMANGIOMA OF THE SKULL WHICH WAS DIFFICULT TO DIFFERENTIATE FROM BONE METASTASIS

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We experienced a case of early breast cancer with a hemangioma of the skull, which was diffisult to differentiate from bone metastasis. A 37-year-old woman underwent a breast conservative surgery for a right early breast cancer (T1aN0M0, Stage I). Bone scintigraphy after the operation revealed an uptake in the skull, and both X-ray and CT scan showed an osteolytic change in the left occipital bone. The local excision was performed to determine whether it was bone metastasis. Histological examination showed cavernous hemangioma. Hemangioma of bones is a rare entity representing 0.39% of all bone tumors. However, asymptomatic hemangiomas, especially in the vertebral lesions, are increaseingly discovered by MR imaging, because they are recognazed as a mottled high intensity in T1- and T2-weighted MR images. As MR imaging is also very useful to detect bone metastasis in patients with breast cancer, it should be done to evaluate a suspected lesion in bone scintigraphy.

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