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Breast Cancer to Meningioma: A Rare Case of Tumor-to-Tumor Metastasis.


ABSTRACT: Tumor-to-tumor metastasis (TTM) is defined as the hematogenous metastasis within a primary host tumor from a donor neoplasm. Since there is insufficient evidence regarding the pathophysiology, clinical course, and management of TTM, there are no precise guidelines for its management. A 73-year-old female patient diagnosed with breast cancer was found to have convexity meningioma. Since the size of tumor and peritumoral brain edema increased during follow-up period, the meningioma was treated with surgical resection. Postoperatively, histopathologic examination confirmed metastasis of invasive ductal carcinoma within a secretory meningioma. The final diagnosis was TTM of breast cancer in meningioma. Here, we report a rare case of intra-meningioma metastasis and a review of literature to provide a better understanding of this rare phenomenon.

SUBMITTER: Joe WH 

PROVIDER: S-EPMC9911711 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Breast Cancer to Meningioma: A Rare Case of Tumor-to-Tumor Metastasis.

Joe Woo Hyeong WH   Lee Chang-Young CY   Kim Chang-Hyun CH   Ko Young San YS   Kim Sang Pyo SP   Kwon Sae Min SM  

Brain tumor research and treatment 20230101 1


Tumor-to-tumor metastasis (TTM) is defined as the hematogenous metastasis within a primary host tumor from a donor neoplasm. Since there is insufficient evidence regarding the pathophysiology, clinical course, and management of TTM, there are no precise guidelines for its management. A 73-year-old female patient diagnosed with breast cancer was found to have convexity meningioma. Since the size of tumor and peritumoral brain edema increased during follow-up period, the meningioma was treated wit  ...[more]

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