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. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: Skeletal Radiol. 2020 Jul 30;50(2):333–341. doi: 10.1007/s00256-020-03558-x

Fig. 3.

Fig. 3

Primary skeletal mesenchymal chondrosarcoma with biphasic pattern in a 24-year-old man. Left scapular radiograph (a) showing relatively densely calcified lesion overlying the left scapula (arrow). Coronal reformatted (b) and axial (c) CT better depict the origin of the mass centered in the scapular body with dense calcification (asterisk in b and c). On PET/CT (d), the mass is avid with a preferential uptake in the periphery of the lesion (SUVmax 8.6, arrow in d). On axial fat-suppressed T2-weighted (e) and post-contrast T1-weighted (f) images, the mass is seen to have a biphasic morphology with a lower signal central component (asterisk in e and f, corresponding to calcified portion on CT and less FDG-avid portion on PET/CT) and a higher signal, solid enhancing portion in the periphery (arrows in e and f, corresponding to a non-calcified rind of tissue which showed higher uptake on PET/CT). Gross pathology specimen (g) of the resected scapular mass (asterisk). The corresponding microscopic findings (h - low power view) show a tumor with biphasic morphology with two relatively distinct components comprised of hyaline cartilage (asterisk in magnified view of h) and the presence of small round cells (double asterisk in magnified view of h).