Lymphatic Filariasis Disseminating to the Upper Extremity
Figure 1
(a) Coronal STIR MR image of the right upper arm (TR = 3100; TE = 62.24; FOV = 38 cm). There is increased T2 signal extending from the axilla along the medial soft tissues of the upper arm following the lymphatic structures and paralleling the neurovascular bundle. (b) Axial T2 TSFSE (TR = 3000; TE = 42.816; FOV = 16) at the level of the mid to distal humerus where focal soft tissue swelling is present. There is an irregular area of increased T2 signal medially containing punctate low signal foci. (c) Coronal STIR MR image (TR = 3100; TE = 62.24; FOV = 38 cm). Axillary lymphadenopathy is demonstrated. (d) Axial precontrast T1WI (TR = 600; TE = 14.768; FOV = 16) at the level of the mid to distal upper arm demonstrates soft tissue infiltration medially. (e) Axial postcontrast T1WI (TR = 600; TE = 14.768; FOV = 16) at the mid to distal upper arm at the level of the swelling. There is enhancement medially with infiltrative appearance, closely abutting the brachial neurovascular bundle. Punctate and curvilinear low signal foci (arrows) are seen in the enhancing region.
