RT Journal Article T1 Hajdu-Cheney Syndrome: Report of a Case in Spain. A1 Cortés-Martín, Jonathan A1 Sánchez-García, Juan Carlos A1 Piqueras-Sola, Beatriz A1 Rodríguez-Blanque, Raquel A1 Tovar-Gálvez, María Isabel A1 Díaz-Rodríguez, Lourdes K1 Hajdu-Cheney syndrome K1 acroosteolysis K1 bone re-sorption K1 osteoporosis K1 rare diseases AB 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. SN 2075-4418 YR 2022 FD 2022-02-23 LK http://hdl.handle.net/10668/20959 UL http://hdl.handle.net/10668/20959 LA en DS RISalud RD Apr 11, 2025