69-year-old male with history of myelodysplastic syndrome presents with a large tender palpable mass on upper back. Diagnostic sensitivity is suboptimal secondary to patient motion. There is a T1 hypointense, T2 hyperintense mass lesion centered in the left upper back, just beneath the ipsilateral scapular tip. The mass measures 3.8 x 1.5 cm on series 6, image 23 and demonstrates some peripheral contrast enhancement. Streaky enhancement is also noted in the adjacent soft tissues. No acute findings seen in the visualized lungs or mediastinum.
Peripherally enhancing mass lesion just inferior to the left scapular tip as described above. While this lesion could be a focus of extramedullary hematopoiesis, other entities such as elastofibroma may also be seen in this location and can be considered in the differential diagnosis. 