Quiz--An ossified soft tissue mass.
Tiwari
Akshay
A
Musculoskeletal Oncology Department, Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy.
Vanel
Daniel
D
Fabbri
Nicola
N
Mercuri
Mario
M
Alberghini
Marco
M
D002114:Calcinosis / Q000150:complications* / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012516:Osteosarcoma / Q000150:complications* / Q000175:diagnosis*; D012983:Soft Tissue Neoplasms / Q000150:complications* / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed