Pyelocancerous backflow during retrograde pyelography is a roentgen sign indicating renal tumors. An example of a pseudotumor (renal hematoma caused by anticoagulation) is presented which displayed this type of backlfow, demonstrating the nonspecificity of the sign. The diagnostic, especially radiographic, findings of intrarenal hematoma are discussed.

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http://dx.doi.org/10.1016/0090-4295(77)90048-6DOI Listing

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