Management of Incidental Thyroid Nodules in the Pretransplant Population.

The incidence of thyroid nodules has increased as diagnostic imaging has become more prevalent, but the management in transplant candidates, a high-risk population because of the need for chronic immunosuppression, has not been described. We sought to review our institution's approach to thyroid nodules incidentally found during pretransplant workup. A multisite retrospective review was performed of pretransplant patients with incidental thyroid nodules diagnosed between 2011 and 2021. Demographics, nodule characteristics, treatment timeline, and oncologic outcomes were collected. Patients diagnosed before and after 2017 were compared to evaluate how adoption of Thyroid Imaging Reporting and Data System and expansion of a dedicated transplant center were correlated with changes in patient management. A total of 10,340 patients underwent abdominal transplant, 236 had incidental thyroid nodules. After 2017, radiology recommendations for biopsy decreased from 39% to 29% (P = 0.174) and fewer biopsies were performed, 45%-33% (P = 0.055). Time between imaging and biopsy was significantly shorter after 2017, from 14 mo to 4 (P = 0.038). Overall time from imaging to transplant was also significantly reduced, from 31 mo to 11 (P < 0.001). Thirty-one (13.1%) patients underwent thyroid surgery before transplant and four (1.7%) patients after. In the recent years, thyroid biopsy rates for thyroid incidentalomas found during pretransplant workup have decreased and more closely match imaging-based guideline recommendations. Patients who required biopsy obtained them sooner and underwent transplant surgery sooner. Guideline-driven thyroid incidentaloma workup for the pretransplant population allows for timely and appropriate cancer care while avoiding unnecessary delays in transplant.

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