Experiencing chest tightness years after mastectomy can be attributed to various factors. While you can expect some residual sensations due to surgical changes and scar tissue, persistent or worsening chest tightness should be evaluated by a healthcare provider. It could be linked to issues like scar tissue contracture or other underlying conditions. Communicating any persistent or concerning symptoms to a healthcare provider for proper evaluation and guidance is essential. Regular follow-ups and open communication with your medical team can address any discomfort and provide the necessary support.