Extrarenal uptake of Tc-99m-DTPA in a case of retroperitoneal abscess causing spurious data in renal function assessment.
The author reports CT of the abdomen and quantitative analysis of renal scintigraphy that was spuriously assessed due to unwanted extrarenal uptake. The patient had a retroperitoneal abscess that was related to fistula from the right kidney. Renal scintigraphy was performed to assess split renal function as a preoperative evaluation for nephrectomy. The computer generated differential function did not appear to coincide with the visual analysis. This discrepancy was believed due to extrarenal uptake from the area of the retroperitoneal abscess.
Nuclear Medicine Service, Department of Veterans Affairs Medical Center, Dallas, Texas, USA. wchoe@dragon.inha.ac.kr
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D018784:Abdominal Abscess / Q000000981:diagnostic imaging* / Q000188:drug therapy; D000368:Aged; D000890:Anti-Infective Agents / Q000627:therapeutic use; D003951:Diagnostic Errors; D005500:Follow-Up Studies; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging* / Q000378:metabolism; D008297:Male; D011866:Radioisotope Renography; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics*; D012187:Retroperitoneal Space; D016284:Technetium Tc 99m Pentetate / Q000493:pharmacokinetics*; D014057:Tomography, X-Ray Computed
D000890:Anti-Infective Agents; D019275:Radiopharmaceuticals; D016284:Technetium Tc 99m Pentetate