case_images: PMC4802987_01
case_images: Preoperative magnetic resonance image in coronal and axial view showing a lesion in proximal third of the right ulnar artery (a and b). It is possible to see the relationship with the right ulnar nerve (b). The Angiography showed a pseudoaneurysm in proximal third of the right ulnar artery (c and d)
case_images: SNI-7-160-g001.jpg
case_images: PMC4802987_01_SNI-7-160-g001.jpg
case_images: F1
case_images: The lesion measured about 28 mm [Figure 1c and d].
case_images: In hematoxilina and eosina and original magnification, x40, in the background, the wall of the pseudoaneurysm presented the lymphoid and eosinophilic infiltrate (a); the lymphoid infiltrate showed both a diffuse and a nodular pattern, with formation of follicles with prominent germinal centers (b); the endothelial cells often showed plump or "hobnail" appearance, eosinophilic cytoplasm, and round nuclei with granular chromatin (c)
case_images: SNI-7-160-g002.jpg
case_images: PMC4802987_01_SNI-7-160-g002.jpg
case_images: F2
case_images: The histopathological diagnosis deposed for ALHE since the vessel wall was characterized by a lymphoid and eosinophilic infiltrate, as well as by plump or "hobnail-like" endothelial cells [Figure 2].
case_images: Postoperative angiography showed complete removal of the pseudoaneurysm (a and b)
case_images: SNI-7-160-g003.jpg
case_images: PMC4802987_01_SNI-7-160-g003.jpg
case_images: F3