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Skeletal Radiology
Skeletal Radiol. 2011 January; 40(1): 105–106.
Published online 2010 April 15. doi:  10.1007/s00256-010-0915-3
PMCID: PMC2989001

Soft tissue mass at the infrascapular fossa


A 23-year-old man with a 5-year history of acute lymphoblastic leukemia (ALL) and who was in remission after chemotherapy treatment presenting with a shoulder mass (Figs. 14).

Fig. 2
The tumor was composed of short, intersecting fascicles of spindle cells with scattered small lymphocytes (original magnification, ×400)

Fig. 3
At high power, the majority of tumor cells demonstrated fusiform pale eosinophilic cytoplasm and elongated, blunt-ended nuclei (original magnification, ×400). These cells were strongly positive for the smooth muscle marker h-caldesmon by immunohistochemistry ...
Fig. 1
Sagittal oblique T1-weighted fast spin echo image with chemical fat saturation and intravenous gadolinium reveals heterogeneous enhancement of a mass within the infrascapular region (arrow)
Fig. 4
In situ hybridization for the LANA gene showed expression in smooth muscle cells and lymphocytes (original magnification, ×200)


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The diagnosis can be found at doi:10.1007/s00256-010-0916-2.

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