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Understanding a Lump Beneath the Sternum: Clinical Perspectives and Diagnostic Priorities for 2026

"The presence of a palpable mass or lump beneath the sternum (the breastbone) often triggers significant patient anxiety. Given the anatomical proximity to vital structures including the heart, major vessels, and the esophagus, individuals seeking information on this symptom prioritize clarity regarding when to seek urgent medical evaluation versus when to monitor for benign changes. This article examines the physiological, structural, and pathological causes associated with retrosternal masses, adhering to current 2026 clinical standards for diagnostic prioritization. Anatomical Considerations and Common Etiologies The sternal area serves as..."

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