title: Oncogenic osteomalacia associated with phosphaturic mesenchymal tumour, mixed connective tissue type of the knee.
abstract: One of the most unusual and uncommon types of osteomalacia is the oncogenic osteomalacia that is predominantly caused by a soft tissue or bone tumour, mostly by a phosphaturic mesenchymal tumour, mixed connective tissue type (PMTMCT). We report a case of a 27-year-old male presented with complaints of progressive and generalized muscle weakness, bone pains and multiple fractures. Intra-articular PMTMCT of the knee was diagnosed and surgically removed. We describe histopathological features of PMTMCT and review the most recent studies concerning this diagnostic problem.
authors.affiliation: Department of Pathology, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, ul. Roentgena 5, 02-781 Warszawa. annacieckiewicz@coi.waw.pl
authors.forename: Anna
authors.initials: A
authors.lastname: Szumera-Ciećkiewicz
authors.forename: Konrad
authors.initials: K
authors.lastname: Ptaszyński
authors.forename: Andrzej
authors.initials: A
authors.lastname: Pawełas
authors.forename: Piotr
authors.initials: P
authors.lastname: Rutkowski
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D007719:Knee Joint; D008297:Male; D008637:Mesenchymoma / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D010018:Osteomalacia / Q000175:diagnosis* / Q000209:etiology