PMC2225462_01
CT scan of the right scapula demonstrating a tumor in the infraspinatus fossa (arrows).
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fig1
The patient underwent MRI and CT imaging of her right scapula which revealed an abnormal 5.3 x 4.7 cm soft tissue mass in the posterior medial aspect of the infraspinatus muscle. (see Figure 1) The mass was hypointense on T1, hyperinterense on T2, and was associated with prominent surrounding edema and significant infiltration into the surrounding soft tissue.
MRI of the right scapula showing a decrease in size
of the PEComa after completion of neoadjuvant treatment (arrow). Edema of the surrounding
infraspinatus muscle is evident as a bright area with less distinct boundaries
than the tumor.
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fig2
Postradiation MRI revealed an increase in the size of the mass of 45.5% to 4.0 cm x 1.8 cm (see Figure 2).