Presentation
Vague lower thoracic backache and fullness.
Patient Data
Heterogeneous signal mass in the bilateral infrascapular region deep to serratus anterior and latissimus dorsi muscles. It shows predominant T1 and T2 intermediate signal with streaky internal fat signal and ill-defined margins. No diffusion restriction. Low-level heterogenous enhancement is seen in post-contrast images.
Linear streaky internal fat density is a relatively specific sign for elastofibroma dorsi.
Lesion measures 5.8x5.6x7.8cm on the left and 5.0x2.4x5.4cm.on the right
Case Discussion
The patient presented with vague bilateral infrascapular pain and swelling. An MRI was advised, which revealed elastofibroma dorsi.
Linear streaky internal fat density, along with the classical location of the lesions, helped in making the diagnosis of elastofibroma dorsi.
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