Husband P, Knudsen A
Postgrad Med J. 1976 Dec;52(614):788-93. doi: 10.1136/pgmj.52.614.788.
Retroperitoneal fibrosis in a 12-year-old boy is reported. This was associated with a fibrotic mass in the neck which resolved spontaneously. Right-sided ureteric obstruction responded to treatment with steroids.