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Primary splenic carcinosarcoma with local invasion of chest wall: a rare case

We herein present a case of carcinosarcoma arising as a primary lesion in the spleen with the presence of local invasion of chest wall prior to widespread metastasis all over the body of a female aged 64 years. The detailed information of therapy and imaging evidences of morphology, histology, and immunohistochemistry are fully provided. To the best of our knowledge, this is the fifth reported case of a primary splenic carcinosarcoma and even the first case to be described with local invasion in the mongoloid. Carcinosarcoma that develops in the spleen with local invasion is extremely rare.