@article {Estes152, author = {Richard J. Lederman and Srinivasan Vijayakumar and Russell W. Hardy and H. Faleck and Scott A. Rosenbloom}, editor = {Estes, Melinda L.}, title = {A 29-year-old woman with back pain and a lumbar mass}, volume = {55}, number = {2}, pages = {152--157}, year = {1988}, publisher = {Cleveland Clinic Journal of Medicine}, issn = {0891-1150}, URL = {https://www.ccjm.org/content/55/2/152}, eprint = {https://www.ccjm.org/content/55/2/152.full.pdf}, journal = {Cleveland Clinic Journal of Medicine} }