Artificial Intelligence-Enabled Analysis of Radiology Reports: Epidemiology and Consequences of Incidental Thyroid Findings

Felipe Larios; Mariana Borras-Osorio; Yuqi Wu; Ana Gabriela Claros; David Toro-Tobon; Esteban Cabezas; Ricardo Loor-Torres; Maria Mateo Chavez; Kerly Guevara Maldonado; Luis Vilatuna Andrango; Maria Lizarazo Jimenez; Ivan Mateo Alzamora; Misk Al Zahidy; Marcelo Montero; Ana Cristina Proano; Cristian Soto Jacome; Jungwei W. Fan; Oscar J. Ponce-Ponte; Megan E. Branda; Naykky Singh Ospina; Juan P. Brito

arXiv · 2510.26032

Artificial Intelligence-Enabled Analysis of Radiology Reports: Epidemiology and Consequences of Incidental Thyroid Findings

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Abstract

Importance Incidental thyroid findings (ITFs) are increasingly detected on imaging performed for non-thyroid indications. Their prevalence, features, and clinical consequences remain undefined. Objective To develop, validate, and deploy a natural language processing (NLP) pipeline to identify ITFs in radiology reports and assess their prevalence, features, and clinical outcomes. Design, Setting, and Participants Retrospective cohort of adults without prior thyroid disease undergoing thyroid-capturing imaging at Mayo Clinic sites from July 1, 2017, to September 30, 2023. A transformer-based NLP pipeline identified ITFs and extracted nodule characteristics from image reports from multiple modalities and body regions. Main Outcomes and Measures Prevalence of ITFs, downstream thyroid ultrasound, biopsy, thyroidectomy, and thyroid cancer diagnosis. Logistic regression identified demographic and imaging-related factors. Results Among 115,683 patients (mean age, 56.8 [SD 17.2] years; 52.9% women), 9,077 (7.8%) had an ITF, of which 92.9% were nodules. ITFs were more likely in women, older adults, those with higher BMI, and when imaging was ordered by oncology or internal medicine. Compared with chest CT, ITFs were more likely via neck CT, PET, and nuclear medicine scans. Nodule characteristics were poorly documented, with size reported in 44% and other features in fewer than 15% (e.g. calcifications). Compared with patients without ITFs, those with ITFs had higher odds of thyroid nodule diagnosis, biopsy, thyroidectomy and thyroid cancer diagnosis. Most cancers were papillary, and larger when detected after ITFs vs no ITF. Conclusions ITFs were common and strongly associated with cascades leading to the detection of small, low-risk cancers. These findings underscore the role of ITFs in thyroid cancer overdiagnosis and the need for standardized reporting and more selective follow-up.

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Felipe Larios, Mariana Borras-Osorio, Yuqi Wu, Ana Gabriela Claros, David Toro-Tobon, Esteban Cabezas, Ricardo Loor-Torres, Maria Mateo Chavez, Kerly Guevara Maldonado, Luis Vilatuna Andrango, Maria Lizarazo Jimenez, Ivan Mateo Alzamora, Misk Al Zahidy, Marcelo Montero, Ana Cristina Proano, Cristian Soto Jacome, Jungwei W. Fan, Oscar J. Ponce-Ponte, Megan E. Branda, Naykky Singh Ospina, Juan P. Brito. 2025-10-30. Artificial Intelligence-Enabled Analysis of Radiology Reports: Epidemiology and Consequences of Incidental Thyroid Findings. https://arxiv.org/abs/2510.26032

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