Abstract
This study aimed to measure the use of pathology evaluation of breast specimens among patients undergoing reduction mammaplasty and assess rates of new diagnoses of breast disease and associated cost. We analyzed the Truven MarketScan Databases from 2009 to 2015 to identify adult female patients undergoing reduction mammaplasty for macromastia. We recorded patient age, rates of obtaining pathology evaluation, new diagnoses of benign or malignant breast disease after pathology evaluation, and total cost for the surgery encounter. Among 17,738 macromastia patients undergoing reduction mammaplasty, 91.3% (n = 16,193) received pathology evaluation. Pathology evaluation rates were clinically similar across age groups <70years (90.8-92.1%) and slightly lower for patients ≥70 (85.0%). Among 6987 patients less than 40years who received pathology evaluation, 0.06% (n = 4) were subsequently diagnosed with malignant breast disease within 3months, compared to 0.23% in the entire cohort (n = 37/16,193). Pathology claims resulted in an added $307 (SD 251) on average for the breast reduction surgery encounters. Breast tissue after reduction mammaplasty is routinely submitted for pathology evaluation, without consideration of age-based risk for breast cancer. Routine pathology evaluation of breast tissue in patients in lower risk age groups (less than 40years) required an additional $536,000 on average to detect a single occult breast cancer compared to an added $85,600 to detect a new malignancy in patients 40years and older. Clinicians and policy makers should consider whether routine pathology evaluation of breast tissue should be individualized based on risk factors for breast cancer.
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