A breast lump test encompasses the diagnostic evaluations used to investigate abnormal masses, thickenings, or tissue changes discovered during a clinical or self-examination. Because most lumps are benign—often stemming from fibrous tissue, fluid-filled cysts, or hormonal fluctuations—doctors utilize a multi-step approach to confirm the underlying cause.
Depending on your age, symptoms, and initial physical findings, the evaluation typically begins with imaging studies such as a diagnostic mammogram or targeted ultrasound. If imaging reveals suspicious characteristics, a physician may recommend a core needle biopsy to collect tissue samples for laboratory analysis and a definitive diagnosis.