Granulomatous Inflammatory Conditions of Breast Tissue

Granulomatous inflammatory conditions of the breast constitute a group of benign yet often challenging disorders characterised by the formation of non-caseating granulomas within breast parenchyma. These lesions may arise in the absence of identifiable infection, as in idiopathic granulomatous mastitis (IGM), or in association with recognised causes such as foreign bodies, systemic granulomatous diseases or specific infections. Clinically, patients present with firm masses, skin changes, tenderness and, occasionally, sinus formation or abscesses, frequently mimicking carcinoma. Diagnostic confirmation relies on core needle biopsy with histopathological demonstration of epithelioid histiocytes, multinucleated giant cells and lymphocytic infiltrates. Management remains controversial and must be tailored to underlying aetiology and disease stage, ranging from conservative medical therapy—including corticosteroids or immunomodulators—to surgical intervention for refractory or advanced cases. The global impact of these conditions spans diagnostic uncertainty, variable practice patterns and the need for multidisciplinary coordination to optimise outcomes.

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Granulomatous Inflammatory Conditions of Breast Tissue publication trend

The graph below shows the total number of articles in granulomatous inflammatory conditions of breast tissue across all publications each year (not limited to Nature Index journals).

Technical terms

Granuloma: A compact collection of activated macrophages (often epithelioid) and giant cells, surrounded by lymphocytes, forming in response to persistent inflammation.

Idiopathic Granulomatous Mastitis (IGM): A chronic, non-infectious inflammatory breast disorder of unknown cause, characterised by granuloma formation in lobular tissue.

Core Needle Biopsy: A percutaneous procedure using a hollow needle to obtain cylindrical tissue samples for histopathological examination.

Autoimmune Response: An immune reaction in which the body’s defence system mistakenly targets its own tissues, contributing to chronic inflammation.

Polymicrobial Signature: The presence of multiple microbial species within a sample, indicating a dysbiotic community rather than a single pathogenic organism.

References

1. Immune pathogenesis of idiopathic granulomatous mastitis: from etiology toward therapeutic approaches. Frontiers in Immunology (2024).
2. Profiling Microbial Communities in Idiopathic Granulomatous Mastitis. International Journal of Molecular Sciences (2023).
3. Management of granulomatous lobular mastitis: an international multidisciplinary consensus (2021 edition). Military Medical Research (2022).