PMC3562084_01
54-year old male with soft-tissue tumor in left supraclavicular fossa.
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He also reported that the swelling appeared to be gradually increasing in size over the last several months (Figs. 1 and 2).
54-year old male with soft-tissue tumor in left supraclavicular fossa.
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He also reported that the swelling appeared to be gradually increasing in size over the last several months (Figs. 1 and 2).
54-year old male with soft-tissue tumor in left supraclavicular fossa.. Notes: Anteroposterior radiograph of soft tissue of the neck. Significant enlargement of soft tissue of the left neck and above the left clavicle containing scattered spotty calcifications (black arrows).
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54-year old male with soft-tissue tumor in left supraclavicular fossa; (A-C) Sequential unenhanced axial CT scan at bone windowing (120 kv, 160 mAs, slice thickness 5 mm, pitch 1).. Notes: A well defined, periosteal based, hypodense (compared to muscles) lobulated mass arising from the diaphysis of the clavicle causing thickening of the underlying cortex (arrowhead) and exhibiting coarse peripheral (white arrows) and spotty central calcifications (dotted arrows).
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There was extrinsic thickening and erosion of the upper cortex of the clavicle with no accompanying osteolysis or expansion of the clavicular cortex (Fig. 4).
54-year old male with soft-tissue tumor in left supraclavicular fossa; (A-C) Sequential oblique coronal fast recovery fast spin-echo T2 weighted MRI images (time repetition: 3540; time echo: 98.2; echo train length: 17).. Notes: A well defined, lobulated, periosteal based mass in broad and direct contact with the periosteum of the clavicular diaphysis with intact cortex (white arrows) and no associated intramedullary abnormal signal intensity (white dotted arrows). The mass shows heterogeneous to high signal intensity with focal areas of bright signal intensity probably representing areas of myxoid degeneration (black arrows). There are hypointense septae within the mass (black dotted arrows) and linear areas of central and peripheral hypointensity (open white arrows) consistent with calcifications.
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The mass exhibited heterogeneous isosignal intensity on T1-WI sequences, heterogeneous high signal intensity on T2-WI sequences (Fig. 5), and heterogeneous vivid enhancement after the administration of contrast medium (Figs. 6 and 7). Centrally, the mass revealed ill-defined areas of high signal intensity mainly on T2-WI and less on T1-WI consistent with areas of myxoid degeneration or hemorrhage (Fig. 5).
54-year old male with soft-tissue tumor in left supraclavicular fossa.. Notes: Technetium-99m-MDP scan plane (20mCi 99m Tc-MDP was intra-venously injected and images (anterior and posterior) were obtained 3 hours later). Strong accumulation of the radiopharmaceutical agent only in the left clavicle, as well as soft-tissue calcifications was noted.
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