1. Cutaneous B-Cell Lymphoma Presenting as a Hand Mass by Anthony L. Yu, Reeba Omman, Albert J. Song, and Terry R. Light JBJS Case Connect Volume 4(1):e2 January 8, 2014 ©2014 by The Journal of Bone and Joint Surgery, Inc.

2. Physical examination revealed a slightly elevated, light blue-red papular mass measuring 2 cm in diameter, located at the junction of the glabrous and nonglabrous skin of the ulnar border of the hand, beginning 1 cm distal to the wrist crease. Anthony L. Yu et al. JBJS Case Connect 2014;4:e2 ©2014 by The Journal of Bone and Joint Surgery, Inc.

3. Axial T1-weighted image of the hand at the level of the metacarpal bases demonstrates an ill- defined mass (white arrow) isolated within the subcutaneous soft tissues of the ulnar part of the hand. Anthony L. Yu et al. JBJS Case Connect 2014;4:e2 ©2014 by The Journal of Bone and Joint Surgery, Inc.

4. The mass (solid white arrow) shows homogeneous diffuse enhancement on the coronal T1- weighted fat-saturated postcontrast image. Anthony L. Yu et al. JBJS Case Connect 2014;4:e2 ©2014 by The Journal of Bone and Joint Surgery, Inc.

5. Pathologic analysis shows a dense and diffuse lymphoid infiltrate in the deep dermis. Anthony L. Yu et al. JBJS Case Connect 2014;4:e2 ©2014 by The Journal of Bone and Joint Surgery, Inc.