TABLE 2

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

					P value for:
Parameter	All patients (n = 30)	No. of patients with any infectious focus found on ¹⁸F-FDG PET/CT (n = 24)	No. of patients with no infectious focus found on ¹⁸F-FDG PET/CT (n = 6)	No. of patients with cyst infection found on ¹⁸F-FDG PET/CT (n = 19)^*	Any infectious focus vs. no infectious focus found on ¹⁸F-FDG PET/CT	Patients with cyst-positive vs. cyst-negative results on ¹⁸F-FDG PET/CT
Age (y)	61.0 (9.0)^†	61.5 (11.0)^†	60.0 (7.0)^†	57.5 (10.0)^†	0.516^‡	0.975^‡
Sex (M/F)	15/15	11/13	4/2	7/12	0.651^§	0.35^§
Presence of fever (>38.5°C) for >3 d (yes/no)	26/4	21/3	5/1	17/2	1.0^§	1.0^§
Presence of abdominal pain (yes/no)	25/5	20/4	5/1	17/2	1.0^§	1.0^§
Solid-organ transplant (yes/no)	20/10	14/10	6/0	10/9	0.074^§	0.057^§
Kidney	17	14	6	10
Liver	2	1	1	0
Nephrectomy performed	9	8	1	7	0.633^§	0.624^§
Unilateral	6	6	0	6
Bilateral	3	2	1	1
Immunocompromised (yes/no)	26/4	20/4	6/0	15/4	0.557^§	0.54^§
Use of immunosuppressants	20	14	6	10
Dialysis	6	6	0	5
Duration of hospital stay (d)
Total	12.6 ± 10.2^\|\|	14.3 ± 10.9^\|\|^,^¶	6.3 ± 1.5^\|\|	15.2 ± 11.6^\|\|^,^#	0.003^**	0.005^**
Between admission and PET/CT scan	4.89 ± 4.0^\|\|	5.5 ± 4.4^\|\|^,^¶	3.7 ± 1.8^\|\|	5.1 ± 4.3^\|\|^,^#	0.201^**	0.256^**
Between PET/CT scan and discharge	7.7 ± 9.0^\|\|	9.1 ± 9.7^\|\|^,^¶	2.7 ± 1.9^\|\|	10.1 ± 10.4^\|\|^,^#	0.122^**	0.009^**

↵* 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.
↵¶ Only 22 of 24 ¹⁸F-FDG PET/CT scans with results that were positive for cyst infection were included (2 scans were performed after hospital discharge).
↵# Only 18 of 19 ¹⁸F-FDG PET/CT scans with results that were positive for cyst infection were included (1 scan was performed after hospital discharge).
↵** Determined by unpaired t test.