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Retroperitoneal fibrosis presents with a clinical and roentgenographic spectrum involving the ureters, inferior vena cava, iliac vein and rectum.The clinical and roentgenographic aspects of this spectrum are discussed and illustrated.The medial deviation of tapered obstructed ureters in the lower lumbar region is described as a "classic sign" of retroperitoneal fibrosis. A comparison statistical analysis of the position of the ureters relative to the lower lumbar spine and sacrum was done comparing 21 cases of retroperitoneal fibrosis with 60 normal cases. This analysis is shown and the lack of significant difference between the 2 groups is demonstrated.

A categorical approach to eosinophilic lung disease is discussed.Using the clinical and roentgenographic information, the numerous causes of this syndrome can be separated into 5 groups: 1. simple pulmonary eosinophilia; 2. prolonged pulmonary eosinophilia; 3. tropical eosinophilia; 4. asthma associated with pulmonary eosinophilia; and 5. polyarteritis nodosa and its variants.Fifteen illustrative cases are presented.

The roentgenologic investigation of sinus tracts and fistulae is reviewed.Emphasis is placed upon the use of a small polyethylene catheter in demonstrating the extent of a fistula or sinus tract.