Needle Bursitis

Fig. 8.51a-c. Hydroxyapatite olecranon bursitis, a Transverse and b,c longitudinal 12-5 MHz US images of a painful soft-tissue mass over the olecranon (0) show the olecranon bursa filled with homogeneous highly echogenic fluid (asterisks) that could be seen fluctuating during probe compression. The bursa exhibits thickened walls (arrowheads) and septa (arrows). In this case, needle aspiration of the bursal fluid revealed calcium milk solution... 

Fig. 12.36a,b. Extension of iliopsoas bursitis within the pelvis, a Axial CT scan demonstrates a large mass (asterisks) filled with hypodense fluid in the left pelvic fossa, close to the ilium. Observe the needle (arrowheads) guided within the mass for percutaneous biopsy, b Coronal Gd-enhanced Tl-weighted MR image reveals an enlarged bursa located, in part, within the pelvic cavity (asterisks) and contrast material uptake by its walls and septa (arrowheads). Pb, pubis... 

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