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When one considers the ureter merely as a muscular duct which transmits the urine secreted and excreted by the kidney into the bladder, it is not surprising that one finds so few instances of primary tumor of this organ. The majority of the neoplasms involving the ureter are papillary carcinomas which originate in the pelvis of the kidney and the cells of which break off and implant themselves on the mucosa of the ureter. Whereas benign papilloma occurs rather infrequently in the pelvis of the kidney, it is still rarer for such a growth to spread secondarily along the ureter until after it has become malignant. Primary carcinoma of the ureter is also rare, only sixty-one cases having been reported in the literature.
Careful perusal of the literature failed to reveal a single case analogous to the one here reported, even though involvement of almost every other organ in the
RAVICH A. NEUROFIBROMA OF THE URETER: REPORT OF A CASE WITH OPERATION AND RECOVERY. Arch Surg. 1935;30(3):442–448. doi:10.1001/archsurg.1935.01180090073004
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