Nodular Type of Muscular Sarcoidosis: A Case Report

Muscular involvement of sarcoidosis is rare and occurs in two forms: nodular and myopathic. In the nodular variety, lesions are long and extend along muscle fibers. Axial MR imaging reveals a star-shaped central structure of decreased signal intensity. Sagittal and coronal MR images show three stripes: an inner stripe of decreased signal intensity and outer stripes of increased signal intensity. Longitudinal sonography shows an echogenic inner stripe and hypoechoic outer stripes. We report a case of nodulartype muscular sarcoidosis in a 53-year-old man, describing the findings of MRI and ultrasonography.