title: Early disappearance of calcification in posterior paraspinal muscles in a patient with rhabdomyolysis associated with neuroleptic malignant syndrome.
abstract: We report computed tomography (CT) findings that demonstrated early disappearance of ectopic calcification in the bilateral posterior paraspinal muscles in a patient with rhabdomyolysis. A 37-year-old man with acute renal failure due to rhabdomyolysis caused by neuroleptic malignant syndrome underwent studies with CT and bone scintigraphy. First, bone scintigraphy showed high radiotracer uptake in bilateral posterior paraspinal muscles; then CT demonstrated ectopic calcification in those muscles. After 2.5 months, CT showed that the calcification had completely disappeared. Bone scintigraphy anticipated calcification, and CT demonstrated a unique course of early disappearance of the calcification.
authors.affiliation: Department of Radiology and Nuclear Medicine, Hyogo Brain and Heart Center, 520 Saishoko, Himeji, Hyogo 670-0981, Japan. h-sasaki@umin.ac.jp
authors.forename: Hiroki
authors.initials: H
authors.lastname: Sasaki
authors.forename: Kazunari
authors.initials: K
authors.lastname: Ishii
authors.forename: Atsushi K
authors.initials: AK
authors.lastname: Kono
authors.forename: Naokazu
authors.initials: N
authors.lastname: Miyamoto
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Fukuda
authors.forename: Junko
authors.initials: J
authors.lastname: Kanata
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Kita
mesh_terms: D058186:Acute Kidney Injury / Q000175:diagnosis / Q000209:etiology; D000328:Adult; D015415:Biomarkers / Q000097:blood; D001842:Bone and Bones / Q000000981:diagnostic imaging; D002114:Calcinosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology*; D009459:Neuroleptic Malignant Syndrome / Q000150:complications* / Q000175:diagnosis; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals / Q000378:metabolism; D012206:Rhabdomyolysis / Q000150:complications / Q000175:diagnosis / Q000209:etiology*; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives / Q000378:metabolism; D013997:Time Factors; D014057:Tomography, X-Ray Computed
chemical_list: D015415:Biomarkers; D019275:Radiopharmaceuticals; C024226:technetium Tc 99m hydroxymethylene diphosphonate; D013669:Technetium Tc 99m Medronate