Presentation
Patient noticed palm asymmetry two weeks ago. Physical examination demonstrated right thenar eminence mass.
Patient Data
Well-defined, irregular shaped, predominantly hyperechoic intramuscular soft tissue mass. It measures at least 33 x 20 x 20 mm at the widest three planes. Color Doppler interrogation demonstrates minimal internal vascularity.
Well-defined, homogeneous low attenuating (-100.9 HU) intramuscular mass. No areas of internal calcifications are seen.
Case Discussion
Lipomas are composed of mature adipocytes and are the most common benign neoplasms. The majority are superficial and can occur anywhere in the body. In literature few cases of intramuscular lipomas of the hand have been documented. This is a rare case of thenar region intramuscular lipoma.