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Biopsy of the nodules revealed metastatic adenocarcinoma, and the immunohistochemical profile was consistent with a digestive tract or ovary origin, showing the following expression results: Cytokeratin (CK)8(+), CK18(+), CK7(+), CK20(+), CK125(−), p63(−), gross cystic disease fluid protein-15(−), thyroid transcription factor-1(−), synaptophysin(−), chromogranin A(−) and hepatocyte paraffin 1(−).
