Primary follicular lymphoma of the breast – Case report
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Copyright (c) 2025 Bruno P Fogaça Duarte, Julia Saccaro Duzzi, José Gabriel K Francisco Petillo, Geovanna Vieira Araújo, Angelo Sementilli

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
DOI:
https://doi.org/10.33821/766Keywords:
breast neoplasms, follicular lymphoma, immunohistochemistry, mastectomyAbstract
Introduction: Primary follicular lymphoma of the breast is a rare entity with unique clinical and pathological features. This report highlights the diagnostic challenges and management of this condition. Case presentation: A 63-year-old patient presented with an irregular nodule in the left breast, which was classified as BIRADS IV/C on core needle biopsy. Suspecting an intramammary tumor, she was referred for surgical excision. Histopathological and immunohistochemical studies confirmed a grade 1/2 follicular lymphoma. Conclusion: This case highlights the importance of integrating imaging, histology and immunohistochemistry for accurate diagnosis of primary mammary follicular lymphoma. Early multidisciplinary management is crucial for a favorable outcome.
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