TABLE 3

Laboratory Values for All Included Patients and Comparison of Patients with Positive and Negative Results on 18F-FDG PET/CT

P value for:
ParameterAll patients (n = 30)Any infectious focus found on 18F-FDG PET/CT (n = 24)No infectious focus found on 18F-FDG PET/CT (n = 6)Cyst infection found on 18F-FDG PET/CT (n = 19)*Any infectious focus vs. no infectious focus found on 18F-FDG PET/CTPatients with cyst-positive vs. cyst-negative results on 18F-FDG PET/CT
CRP (mg/dL)95 (82)106 (95)109 (66)106 (91)0.9170.899
CRP of >50 mg/dL (yes/no)29/123/16/018/11.0§1.0§
Leukocyte count (g/L)8.9 (5.3)8.9 (7.5)9.0 (4.6)8.9 (8.4)0.6590.702
Creatinine (μmol/L)253 ± 246||283 ± 264||121 ± 52||307 ± 282||0.0110.015
eGFR (mL/min/1.73 m2)48 (45)40 (51)55 (37)35 (51)0.1440.125
Positive blood culture (yes/no)12/188/164/26/130.184§0.175§
Escherichia coli532
Enterobacter faecalis220
Other532
Positive urine culture (yes/no)17/1314/103/313/61.0§0.630§
Escherichia coli862
Klebsiella pneumoniae440
Other541
  • * Eleven had 18F-FDG–avid renal cyst and 8 had 18F-FDG–avid hepatic cyst.

  • Median, with interquartile range in parentheses.

  • Determined by Mann–Whitney test.

  • § Determined by Fisher test.

  • || Mean ± SD.

  • Determined by unpaired t test.

  • eGFR = estimated glomerular filtration rate.