Bicipital radial bursitis: CT and MR appearance.

The authors present two cases of bicipital radial bursitis in the elbow. In these two cases, different CT and MR imaging patterns were observed. In the first case, postcontrast CT inhomogeneously enhanced the entire lesion. T1-weighted MR images showed the lesion with iso-signal intensity with muscle. T2-weighted images demonstrated the lesion with inhomogeneous high signal intensity, with internal, linear hypointensity. Histologically, the lesion consisted of hypertrophic synovia. In the second case, postcontrast CT failed to enhance the lesion. T2-weighted MR images showed the lesion with homogeneous, marked high signal intensity. Histologically, the lesion consisted of a monocystic bursa lined by thin synovial lining layers.