Idiopathic systemic fibrosis. The simultaneous occurrence of retroperitoneal fibrosis and dismoid tumor.

@article{Matas1974IdiopathicSF,
  title={Idiopathic systemic fibrosis. The simultaneous occurrence of retroperitoneal fibrosis and dismoid tumor.},
  author={Arthur J. Matas and A J Kremen},
  journal={Minnesota medicine},
  year={1974},
  volume={57 4},
  pages={279-80}
}