Research Article

Applicability of 14 Formulas for Estimating Glomerular Filtration Rate in the Evaluation of Renal Function before and after Nephron-Sparing Surgery in Patients with Renal Tumors

Table 1

Basic characteristics of the 50 patients.

Characteristic (n = 50)MaleFemale

N2228
Age (years)17–8029–73
Average age (years)53.8 ± 10.250.0 ± 10.5
Height (cm)171.6 ± 6.1159.0 ± 4.1
Weight (kg)70.4 ± 9.257.4 ± 6.6
Plasma creatinine (mg/dl)0.94 ± 0.0860.75 ± 0.089
Plasma urea nitrogen (mg/dl)98.9 ± 21.591.1 ± 18.5
Plasma albumin (g/dl)440.0 ± 20.0433.2 ± 26.3
rGFR (ml/min/1.73 m−2)90.04 ± 15.4291.72 ± 19.67
Tumor size (cm)3.3 (1.3–10.5)4.1 (0.8–8.0)

rGFR category
 rGFR ≥ 901014
 60 ≤ rGFR < 901211
 rGFR < 603

Pathologic type
 Angiomyolipoma (AML)311
 chRCC2
 ccRCC1613
 Mucinous tubular and spindle cell carcinoma1
 ESC RCC1
 RNET1
 Others2

RGFR, reference glomerular filtration rate; tumor size, the maximum diameter of the tumor; AML, angiomyolipoma; chRCC, chromophobe renal cell carcinoma; ccRCC, clear cell renal cell carcinoma; ESC RCC, eosinophilic solid and cystic renal cell carcinoma; RNET, renal neuroendocrine tumor.