An Analysis of Computed Tomography Imaging Features and Predictive Factors for Postoperative Recurrence and Metastasis of Abdominal Paragangliomas
Table 2
CT findings of the 51 cases of paragangliomas.
All patients
The aggressive group
Nonaggressive group
value
Number of patients
51
8
43
/
CT values (HU)
CTU
42
43
42
0.595
CTA
97
71
102
0.020
CTV
100
80
104
0.020
DEAP
55
60
6
0.020
DEPP
58
62
14
0.023
ED
0.009
Enhancement degree (<40 HU)
14 (27.4%)
6 (75.0%)
8 (18.6%)
Enhancement degree (>40 HU, <60 HU)
13 (25.5%)
1 (12.5%)
12 (27.9%)
Enhancement degree (>60 HU)
24 (47.1%)
1 (12.5%)
23 (53.5%)
EP
2.5
1.9
2.6
Progressive enhancement
32 (62.7%)
7 (87.5%)
25 (58.1%)
0.238
LD (mm)
61.9
89.8
56.7
0.008
SD (mm)
48.5
70.2
44.4
0.007
Mean D (mm)
55.2
80
50.6
0.007
LD/SD
1.29
1.33
1.29
0.768
Location
0.580
Retroperitoneal
47 (92.2%)
8 (100.0%)
38 (88.4%)
Else
5 (9.8%)
0 (0.0%)
5 (11.6%)
Morphology
0.057
Round
4 (7.8%)
0 (0.0%)
4 (9.3%)
Oval
15 (29.4%)
0 (0.0%)
15 (34.9%)
Irregular
32 (62.8%)
8 (100.0%)
24 (55.8%)
Solid
6 (11.8%)
0 (0.0%)
6 (14.0%)
0.471
Cystic degeneration
45 (88.2%)
8 (100.0%)
37 (86.1%)
0.640
Single and large
3 (5.9%)
1 (12.5%)
2 (4.7%)
Singe and small
12 (23.5%)
1 (12.5%)
11 (25.6%)
Multiple
30 (58.8%)
6 (75.0%)
24 (55.8%)
Hemorrhage
1 (2.0%)
1 (12.5%)
0 (0.0%)
0.052
Calcification
11 (21.6%)
8 (18.6%)
3 (37.5%)
0.468
“Pointed peach” sign
34 (66.7%)
5 (62.5%)
29 (67.4%)
1.000
Lymph nodes
3 (5.9%)
1 (12.5%)
2 (4.7%)
0.407
Blood vessels
0.577
None
5 (9.8%)
0 (0.0%)
5 (11.6%)
Intratumoral
7 (13.7%)
0 (0.0%)
7 (16.3%)
Peripheral
7 (13.7%)
0 (0.0%)
7 (16.3%)
All
32 (62.8%)
7 (87.5%)
25 (58.1%)
Data are presented as n of patients (%). Continuous data were compared using an independent two-sample t-test or the Mann–Whitney U-test based on data normality; categorical data were compared using Fisher’s exact test. Values written with “” indicate a significant difference between the tumors . Note: CTU = CT value of nonenhancement; CTA = CT value of arterial phase; CTV = CT value of venous phase; DEAP = degree of enhancement in arterial phase; DEPP = degree of enhancement in portal venous phase; ED = enhancement degree; EP = enhancement potentiality; LD = long diameter; SD = short diameter.
