Hajdu-Cheney Syndrome: Report of a Case in Spain Cortés Martín, Jonathan Sánchez García, Juan Carlos Piqueras Sola, Beatriz Rodríguez Blanque, Raquel Tovar Gálvez, María Isabel Díaz Rodríguez, Consuelo Lourdes Hadju-Cheney syndrome Rare diseases Acroosteolysis Osteoporosis Bone re-sorption This paper describes the case of a 54-year-old woman diagnosed with Hajdu–Cheney syndrome, who presents with characteristic craniofacial dysmorphia, short stature, premature loss of teeth, developmental skeletal disorders, fibrocystic mastopathy, bilateral hearing loss and an intermittent mild neutropenia. The patient received treatment with bisphosphonates and was awaiting evaluation for surgical arthroplasty of both hips when she suffered a motor vehicle accident, which led to a rapid progression in her disease by increasing her degree of dependence for most activities of daily living. The clinical presentation and radiologic findings seen in this case confirm the three main features of the syndrome: phenotypic variability, an age-dependent progression and the presence of generalized osteoporosis and acroosteolysis of distal phalanges. The main objective of the manuscript is to describe a new case of a patient diagnosed with Hajdu–Cheney syndrome. Due to the low prevalence of the syndrome and the small number of cases reported in the scientific literature, obtaining a complete description and a global perspective of the disease is complex. 2022-04-20T10:14:22Z 2022-04-20T10:14:22Z 2022-02-23 journal article Cortés-Martín, J... [et al.]. Hajdu-Cheney Syndrome: Report of a Case in Spain. Diagnostics 2022, 12, 566. [https://doi.org/10.3390/diagnostics12030566] http://hdl.handle.net/10481/74392 10.3390/diagnostics12030566 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España MDPI