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A Male Breast Cancer: Case Study at RSUD dr. Iskak Tulungagung in 2024 Regina, Ken Raos; Rosdiana, Yusfita Efi
Keluwih: Jurnal Kesehatan dan Kedokteran Vol. 7 No. 2 (2026): Keluwih: Jurnal Kesehatan dan Kedokteran (June) - In Progress
Publisher : Direktorat Penerbitan dan Publikasi Ilmiah, Universitas Surabaya

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Abstract

This case study explores the clinical and molecular profile of male breast cancer (MBC) and underscores the diagnostic utility of immunohistochemistry. A 79-year-old man was diagnosed with grade III invasive carcinoma of no special type (NST) via histopathology and immunohistochemistry, showing ER+, PR+, HER2 3+, and Ki67 (30%) expression. The tumor was classified as Luminal B-like (HER2-positive). The findings highlight the relevance of molecular profiling in guiding treatment and prognosis in rare male breast cancer cases.