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Skeletal Radiol. Jan 2011; 40(1): 105–106.
Published online Apr 15, 2010. doi:  10.1007/s00256-010-0915-3
PMCID: PMC2989001
Soft tissue mass at the infrascapular fossa
Seng-Choe Tham,corresponding author1,3 Andrew E. Horvai,2 Thomas Link,1 and Lynne Steinbach1
1Department of Radiology, University of California, San Francisco, USA
2Department of Pathology, University of California, San Francisco, USA
3Department of Radiology, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
Seng-Choe Tham, Phone: +65-93898980, Seng_Choe_Tham/at/
corresponding authorCorresponding author.
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
Fig. 2
The tumor was composed of short, intersecting fascicles of spindle cells with scattered small lymphocytes (original magnification, ×400)
Fig. 3
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 (more ...)
Fig. 1
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
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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