RT Journal Article T1 Mediastinal Ectopic Thyroid Carcinoma and Concurrent Multinodular Pulmonary Fibrosis in a Horse A1 Manso Díaz, Gabriel A1 Jiménez Martínez, María de los Ángeles A1 García Fernández, Rosa Ana A1 Herrán Vilella, Ramón Cayetano A1 Santiago, Isabel AB A 30-year-old Standardbred gelding was referred for chronic pleural effusion. Thoracic ultrasound revealed marked bilateral pleural effusion and a large heterogeneous mass within the cranial mediastinum, which extended from the right 5th to the 11th intercostal space. Subsequently, on thoracic radiographs, the cranial mediastinal mass was confirmed, and a nodular interstitial pattern was identified in the lungs. Because of progressive clinical deterioration of the patient, the owners elected humane euthanasia and necropsy was performed. The mediastinal mass was consistent with an ectopic thyroid carcinoma, and the pulmonary nodules represented equine multinodular pulmonary fibrosis (EMPF). This case report describes a type of mediastinal tumor not previously described in horses. Moreover, it shows the need of including EMPF as a possible differential diagnosis for a nodular interstitial pulmonary pattern in conjunction with a mediastinal or other masses. PB Elsevier SN 0737-0806 YR 2019 FD 2019 LK https://hdl.handle.net/20.500.14352/96592 UL https://hdl.handle.net/20.500.14352/96592 LA eng NO Manso-Díaz, Gabriel, et al. «Mediastinal Ectopic Thyroid Carcinoma and Concurrent Multinodular Pulmonary Fibrosis in a Horse». Journal of Equine Veterinary Science, vol. 77, junio de 2019, pp. 8-11. https://doi.org/10.1016/j.jevs.2019.02.016. DS Docta Complutense RD 14 abr 2026