@misc{indiciaea945a0c5a7fc, title = {Case profile: recurrent retroperitoneal mass.}, author = {J F Leyson and S P Cohen and S M Goldman and H Sussman}, year = {1977}, doi = {10.1016/0090-4295(77)90294-1}, url = {https://pubmed.ncbi.nlm.nih.gov/831362/}, note = {Source identifier: 831362} }