title: [Hyperparathyroidism masked by osteomalacia. Is vitamin D administration in every case of osteomalacia problem-free?].
abstract: In a 71-year-old patient with osteomalacia, masked primary hyperparathyroidism was detected by vitamin D therapy for hypercalcemia. Surgery revealed a parathyroid tumor. Interpretation of total plasma calcium may be difficult unless the 25-hydroxyvitamin D levels are outside the normal range.
mesh_terms: D000236:Adenoma / Q000150:complications / Q000601:surgery; D000368:Aged; D005260:Female; D006801:Humans; D006934:Hypercalcemia / Q000209:etiology; D006961:Hyperparathyroidism / Q000150:complications / Q000175:diagnosis*; D010018:Osteomalacia / Q000150:complications / Q000175:diagnosis*; D010281:Parathyroid Hormone / Q000097:blood; D010282:Parathyroid Neoplasms / Q000150:complications / Q000601:surgery; D014808:Vitamin D Deficiency / Q000150:complications / Q000175:diagnosis*
chemical_list: D010281:Parathyroid Hormone
vernacular_title: Durch Osteomalazie kaschierter primärer Hyperparathyreoidismus. Ist die Vitamin-D-Applikation bei jeder Osteomalazie problemlos?