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Images in paediatrics
Idiopathic calcinosis in a paediatric patient
  1. Edoardo Marrani1,
  2. Lisa Gamalero2,
  3. Giovanni Beltrami3,
  4. Chiara Caporalini4,
  5. Gabriele Simonini1,5,
  6. Rolando Cimaz6,
  7. Teresa Giani5,7
  1. 1 Department of Neurosciences, Psychology, Drug Research and Child Health, Università degli Studi di Firenze, Firenze, Italy
  2. 2 Postgraduate School of Pediatrics, Università degli Studi di Udine, Udine, Italy
  3. 3 Department of Pediatric Orthopedic Oncology, Azienda Ospedaliera Careggi, Firenze, Italy
  4. 4 Pathology Unit, Ospedale Pediatrico Meyer, Firenze, Italy
  5. 5 Division of Rheumatology, Anna Meyer Children’s University Hospital, Florence, Italy
  6. 6 Department of Clinical Sciences and Community Health, University of Milano, Milano, Italy
  7. 7 Department of Medical Biotechnology, Università degli Studi di Siena, Siena, Italy
  1. Correspondence to Dr Edoardo Marrani, Department of Neurosciences, Psychology, Drug Research and Child Health, Università degli Studi di Firenze, Firenze 50139, Italy; edoardo.marrani{at}

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A previously healthy girl aged 15 years presented with a nocturnal onset of a large painful hard mass over her left trochanteric region, with hyperaemic skin. The following week a similar one was palpable over her right elbow. Radiographs showed well-defined calcified masses, one (12×5 cm) over the trochanteric region, and the other (3×2 cm) over the distal end of the humerus. MRI confirmed calcified intramuscular lesions (figure 1). Histopathological examination …

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  • Contributors EM, GB and TG were in charge of the patient. EM wrote the manuscript with support from GS, RC and TG. RC supervised the project. All authors provided critical feedback and helped shape the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Parental/guardian consent obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.