Download Hemifacial Myohyperplasia: Imaging Features of an

• Noninvasive soft tissue
thickening and mass-like
lesion, following the signal
intensity of muscle
• Mild enhancement of the
lesion, similar to the degree of
enhancement of other muscles
• Lesion follows the anatomy of
multiple perioral and facial
muscles
• No extension beyond the
contour of these enlarged
muscles
Mild
enhancement of
the lesion,
similar to the
degree of
enhancement of
other muscles
Noninvasive soft tissue thickening and mass-like lesion along the nasolabial region,
following the signal intensity of muscle