Endocrinology and Metabolism

Review Article

Calcium & bone metabolism
Acquired Forms of Fibroblast Growth Factor 23-Related Hypophosphatemic Osteomalacia: Nobuaki Ito, Naoko Hidaka, Hajime Kato; Endocrinol Metab. 2024;39(2):255-261. Published online March 11, 2024; DOI: https://doi.org/10.3803/EnM.2023.1908

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Fibroblast growth factor 23 (FGF23) is a pivotal humoral factor for the regulation of serum phosphate levels and was first identified in patients with autosomal dominant hypophosphatemic rickets and tumor-induced osteomalacia (TIO), the most common form of acquired FGF23-related hypophosphatemic rickets/osteomalacia (FGF23rHR). After the identification of FGF23, many other inherited and acquired forms of FGF23rHR were reported. In this review article, the detailed features of each acquired FGF23rHR are discussed, including TIO, ectopic FGF23 syndrome with malignancy, fibrous dysplasia/McCune-Albright syndrome, Schimmelpenning-Feuerstein-Mims syndrome/cutaneous skeletal hypophosphatemia syndrome, intravenous iron preparation-induced FGF23rHR, alcohol consumption-induced FGF23rHR, and post-kidney transplantation hypophosphatemia. Then, an approach for the differential diagnosis and therapeutic options for each disorder are concisely introduced. Currently, the majority of endocrinologists might only consider TIO when encountering patients with acquired FGF23rHR; an adequate differential diagnosis can reduce medical costs and invasive procedures such as positron emission tomography/computed tomography and venous sampling to identify FGF23-producing tumors. Furthermore, some acquired FGF23rHRs, such as intravenous iron preparation/alcohol consumption-induced FGF23rHR, require only cessation of drugs or alcohol to achieve full recovery from osteomalacia.

Citations

Citations to this article as recorded by

Paraneoplastic endocrine syndromes: a contemporary overview
Juan Eduardo Quiroz-Aldave, Jacsel Suarez-Rojas, Elman Rolando Gamarra-Osorio, Katia Rivera-Fabián, María Del Carmen Durand-Vásquez, Luis Alberto Concepción-Urteaga, José Paz-Ibarra, Marcio José Concepción-Zavaleta
Expert Review of Endocrinology & Metabolism.2025; : 1. CrossRef
Acquired hypophosphatemic osteomalacia: case series from a Peruvian referral center (1999–2023)
José Paz-Ibarra, Sofía Sáenz-Bustamante, Manuel Inostroza-Fernández, Paola Sifuentes Hermenegildo, Liliana Ancajima Lescano, Marcio Concepción-Zavaleta, Alejandro Román-González, Alfredo Adolfo Reza-Albarrán
Archives of Osteoporosis.2024;[Epub] CrossRef

Case Report

Solitary Pulmonary Metastasis of a Thyroid Papillary Microcarcinoma, Masquerading as Primary Lung Cancer.: Jong Hwan Lee, Se Jin Ahn, Hyung Jin Kim, Sang Eon Jang, Jae Soo Koh, Yun Yong Lee, Cheol Hyeon Kim, Jae Cheol Lee; Endocrinol Metab. 2011;26(1):78-83. Published online March 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.1.78

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Abstract PDF

Although pulmonary metastasis of thyroid cancer is not uncommon, it mostly occurs as multiple discrete nodules on the lung parenchyma. Because thyroid cancer presenting with an isolated large lung mass is extremely rare and the diagnosis is frequently based on small pieces of tissue obtained by a fine needle, the wrong diagnosis such as lung cancer is prone to be made. A 60-year-old man was admitted for evaluation of a lung mass detected on chest radiography. Cytological examination of the bronchial washing specimens suggested adenocarcinoma. Surgery for early lung cancer was performed considering that no other abnormalities were found during the work-up that included 18-fludeoxyglucose positron emission tomography computer tomography (18FDG-PET/CT). Unexpectedly, the diagnosis of papillary thyroid cancer with lung metastasis was made, which prompted us to evaluate the thyroid gland and then remove the primary cancer by subsequent operation. Although it is uncommon, physician should be aware of this possibility, which could help to avoid the wrong diagnosis. Here we report on a typical case of solitary pulmonary metastasis of thyroid cancer and we summarize the previously reported cases with a review of the relevant literature.

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Citations to this article as recorded by

Lung nodule detected by F-18 fluorodeoxyglucose positron emission tomography-computed tomography in patients with papillary thyroid cancer, negative 131I whole body scan, and undetectable serum-stimulated thyroglobulin levels: two case reports
Chan-Hee Jung, Hyeon-Jeong Goong, Bo-Yeon Kim, Jung-Mi Park, Jeong-Ja Kwak, Chul-Hee Kim, Hyun-Sook Hong, Sung-Koo Kang, Ji-Oh Mok
Journal of Medical Case Reports.2012;[Epub] CrossRef

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