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This case study discusses a patient diagnosed with invasive ductal carcinoma of the right breast in 1999, negative for ER/PR/Her-2 by IHC initially. Treatment included MRM, 4 cycles of AC, and five years of tamoxifen. In 2005, a paratracheal node biopsy revealed Her-2 amplification by FISH. The dilemma arises in determining if the node represents a different primary cancer or recurrence. This complex scenario prompts a reassessment of the initial breast cancer pathology and treatment plan.
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