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Deprecated: Implicit conversion from float 276.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nucl+Med+Mol+Imaging 2014 ; 48 (4): 262-71 Nephropedia Template TP
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Tc-99m Hydroxymethylene Diphosphonate (HMDP) Renal Uptake as a Surrogate Marker of Postoperative Impairment of the Glomerular Filtration Rate in Renal Tumor Patients Following Nephron-Sparing Surgery #MMPMID26396630
Choi H; Lee WW; So Y; Ha S; Byun SS; Kim SE
Nucl Med Mol Imaging 2014[Dec]; 48 (4): 262-71 PMID26396630show ga
Purpose: We investigated Tc-99m hydroxymethylene diphosphonate (HMDP) scintigraphy findings in renal tumor patients from the perspective of postoperative renal dysfunction following nephron-sparing surgery (NSS). Methods: Forty-three renal tumor patients (M:F = 28:15, age 53.9?±?12.5 years) who had undergone Tc-99m HMDP scintigraphy after NSS were enrolled. The patients were divided into HMDP+ or HMDP? groups by visual assessment, and the asymmetric index (ASI) was calculated using a region-of-interest analysis. In 16 patients, the total and split glomerular filtration rate (GFR) was assessed using Tc-99m diethylenetriaminepentaacetic acid (DTPA) scintigraphy at baseline and at 3 and 6 months post-NSS. Results: High Tc-99m HMDP uptake was observed in the operated kidneys, but this did not persist later than 7 days post-NSS. Split GFR of the operated kidneys at baseline (58.5?±?9.3 ml/min) was significantly reduced at 6 months post-NSS (40.1?±?5.9 ml/min, p?0.001) in only those who showed intense uptake of Tc-99m HMDP. Declines in both total GFR (p?=?0.010 and p?=?0.002 for 3 and 6 months, respectively) and split GFR of the operated kidneys (p?0.001 and p?0.001 for 3 and 6 months, respectively) were clearly evidenced at 3 and 6 months post-NSS only in patients with high Tc-99m HMDP in the operated kidneys. The ASI was negatively correlated with %change in the split GFR of these operated kidneys at 6 months post-NSS (rho =?0.578, p?=?0.0304). Conclusions: Tc-99m HMDP uptake within 1 week following NSS is a surrogate marker of GFR impairment over 6 months post-NSS.