Abstract
Background
This study aimed to investigate the changes in diagnosis after a second opinion for breast cancer patients from a multi-disciplinary tumor board (MTB) review at an National Cancer Institute (NCI)-designated cancer center.
Methods
A retrospective study analyzed patients with a breast cancer diagnosed at an outside institution who presented for a second opinion from August 2015 to March 2016 at the Medical University of South Carolina (MUSC). Radiology, pathology, and genetic testing reports from outside institutions were compared with reports generated after an MTB review and subsequent workup at MUSC. The second-opinion cases were categorized based on whether diagnostic variations were present or not.
Results
The review included 70 patients seeking second opinions, and 33 (47.1%) of these patients had additional radiologic images. A total of 30 additional biopsies were performed for 25 patients, with new cancers identified in 16 patients. Overall, 16 (22.8%) of the 70 of patients had additional cancers diagnosed. For 14 (20%) of the 70 patients, a second opinion led to a change in pathology interpretation. Genetic testing was performed for 11 patients (15.7%) who met the National Comprehensive Cancer Network (NCCN) guidelines for genetic testing, but none showed a mutation other than a variant of unknown significance. After a complete workup, 30 (42.8%) of the 70 patients had a change in diagnosis as a result of the MTB review.
Conclusion
A review by an MTB at an NCI-designated cancer center changed the diagnosis for 43% of the patients who presented for a second opinion for breast cancer. The study findings support the conclusion that referral for a second opinion is beneficial and has a diagnostic impact for many patients.
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