Intramuscular myxoma
Updates to Case Attributes
Intramuscular myxomas are rare benign myxoid lesions,commonly, commonly seen in middle-aged women.
On imaging, they are often seen in the large muscles of the thighs, buttocks, or shoulder girdle,and, and present as well-defined cystic-like lesions with a surrounding rim of fat.They tend to occur in adults around 40 and 60 years with a recognised female predilection (70%).They are associated with fibrous dysplasias,dysplasia as part of Mazabraud syndrome.Our case shows a well-defined homogeneous mass appearinghyperintense on T2W / STIR images and isointense on T1W images relative to surrounding muscle, witha subtle rim of fat.Imaging features, location of the lesion, age group and sex lead to thediagnosis of intramuscular myxoma, which was later confirmed on FNAC.
-<p>Intramuscular myxomas are rare benign myxoid lesions,commonly seen in middle-aged women.</p><p>On imaging, they are often seen in large muscles of thighs, buttocks, or shoulder girdle,and present as well-defined cystic-like lesions with a surrounding rim of fat.<br>They tend to occur in adults around 40 and 60 years with a recognised female predilection (70%).<br>They are associated with fibrous dysplasias, as part of Mazabraud syndrome.<br>Our case shows a well-defined homogeneous mass appearing<br>hyperintense on T2W / STIR images and isointense on T1W images with<br>a subtle rim of fat.<br>Imaging features, location of the lesion, age group and sex lead to the<br>diagnosis of intramuscular myxoma, which was later confirmed on FNAC.</p>- +<p>Intramuscular myxomas are rare benign myxoid lesions, commonly seen in middle-aged women.</p><p>On imaging, they are often seen in the large muscles of the thighs, buttocks, or shoulder girdle, and present as well-defined cystic-like lesions with a surrounding rim of fat. They tend to occur in adults around 40 and 60 years with a recognised female predilection (70%). They are associated with fibrous dysplasia as part of Mazabraud syndrome. Our case shows a well-defined homogeneous mass appearing hyperintense on T2W / STIR images and isointense on T1W images relative to surrounding muscle, with a subtle rim of fat. Imaging features, location of the lesion, age group and sex lead to the diagnosis of intramuscular myxoma, which was later confirmed on FNAC.</p>
Updates to Study Attributes
Well defined lesion within the intramuscular plane of distal deltoid muscle appearing homogeneously isointense on T1 and hyperintense on T2W / STIR images relative to the surrounding muscle. A subtle rim of fat is seen on T1 images.
Updates to Study Attributes
Histopath shows oval and spindle shaped cells in a background of myxomatous tissue.