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Am. J. Trop. Med. Hyg., 35(4), 1986, pp. 752-758
Copyright © 1986 by The American Society of Tropical Medicine and Hygiene

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Patterns of Schistosoma Haematobium Egg Distribution in the Human Lower Urinary Tract

II. Obstructive Uropathy

John D. Christie, Dennis Crouse, Jerome H. Smith, Jesus Pineda, Elia-Anis Ishak AND Ismail A. Kamel*
Departments of Pathology and Pediatrics, The University of Texas Medical Branch, Galveston, Texas, Department of Pathology and Laboratory Medicine, Texas A&M University, College Station, Texas, and Department of Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt

In a series of 32 unselected consecutive autopsies of Egyptian male adults, we found a significant prevalence of schistosomal obstructive uropathy (SOU) and of precursor lesions of stenosis, fibrosis and induration of the ureters (62.5%). Lower urinary tracts with obstructive uropathy had a significantly higher total egg burden (TEB) than did lower urinary tracts with any other type of gross lesion (i.e., benign prostatic hypertrophy, other urethral outlet obstruction, or SOU precursor lesions). In turn, lower urinary tracts with any type of gross change had higher egg burdens than did tracts which appeared grossly normal. Lower urinary tracts with any type of gross lesion had significantly larger seminal vesicles than did tracts which were grossly normal. Moreover, relative weight of seminal vesicles could be correlated with the S. haematobium egg burdens in the seminal vesicles. In a series of lower urinary tracts taken from unselected consecutive American autopsies, seminal vesicle weight could be correlated with increase in prostatic weight in those tracts with prostatic hypertrophy; the same correlation could not be found in tracts without prostatic hypertrophy. Thus, seminal vesicle hypertrophy appears to correlate with obstructive uropathy in general, not solely obstructive uropathy of schistosomal origin. Digital evaluation of seminal vesicle size may be useful in the clinical evaluation of such patients.

Accepted for publication March 12, 1986.


* Deceased.

Address reprint requests to: Dr. John D. Christie, Department of Pathology, The University of Texas Medical Branch, Galveston, Texas 77550-2780.






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Copyright © 1986 by the American Society of Tropical Medicine and Hygiene.