Retrospective Study
Copyright ©The Author(s) 2019.
World J Gastrointest Surg. Jan 27, 2019; 11(1): 19-26
Published online Jan 27, 2019. doi: 10.4240/wjgs.v11.i1.19
Table 1 Comparison of demographics: Clinical and histopathological features of both groups
ParametersIncidental App (n = 72)Acute App (n = 288)P value
Age0.044a
mean ± SD31.1 ± 11.337.1 ± 17.3
Median28.532.0
Min-max19.0-63.018.0-87.0
IQR12.024.0
Gender0.634b
Male37 (51.4%)157 (54.5%)
Female35 (48.6%)131 (45.5%)
WBC< 0.001a
mean ± SD7.8 ± 2.113.2 ± 4.5
Median7.213
Min-max4.5-15.41.1-23.8
IQR2.46.6
Neutrophil< 0.001a
mean ± SD4.6 ± 2.011.0 ± 6.2
Median4.211.1
Min-max0.1-13.51.9-21.5
IQR1.87.2
Lymphocyte< 0.001a
mean ± SD2.3 ± 0.61.8 ± 1.0
Median2.31.7
Min-max0.9-4.20.3-9.6
IQR1.01.3
Platelets0.954a
mean ± SD248.0 ± 63.4248.8 ± 84.2
Median241.0236.0
Min-max103.0-461.043.0-641.0
IQR73.090.0
RDW0.036a
mean ± SD13.4 ± 1.014.4 ± 7.2
Median13.213.5
Min-max11.8-18.011.4-28.8
IQR1.11.4
MCH< 0.001a
mean ± SD29.8 ± 2.128.8 ± 3.1
Median29.929.3
Min-max20.0-33.019.3-46.9
IQR2.42.4
MPV0.441a
mean ± SD8.4 ± 1.08.9 ± 1.8
Median8.28.5
Min-max6.3-11.65.4-12.4
IQR1.11.7
MCV0.078a
mean ± SD86.8 ± 5.285.4 ± 6.9
Median87.586.0
Min-max60.4-95.530.5-96.5
IQR6.26.7
PDW0.286a
mean ± SD16.1 ± 2.115.8 ± 2.1
Median16.316.5
Min-max11.3-18.38.9-19.2
IQR0.61.0
Bilirubin0.002a
mean ± SD0.7 ± 0.30.9 ± 0.6
Median0.60.7
Min-max0.1-2.10.1-6.0
IQR0.40.6
Appendix width (mm)< 0.001a
mean ± SD6.4 ± 1.810.9 ± 6.6
Median6.010.0
Min-max4.0-13.01.5-40.0
IQR2.07.0
Appendix length (mm)0.096a
mean ± SD70.3 ± 18.866.5 ± 19.9
Median70.065.0
Min-max30.0-110.010.0-155.0
IQR21.025.0
Acute appendicitis< 0.001b
Yes5 (6.9%)238 (82.6%)
No67 (93.1%)50 (17.4%)
Histopathological findings
Acute App5 (6.9%)181 (62.8%)
Perforated App0 (0.0%)48 (16.7%)
Appendix vermiformis52 (72.2%)18 (6.3%)
Lymphoid hyperplasia3 (4.2%)18 (6.3%)
Granulomatous App0 (0.0%)3 (1.0%)
E. vermicularis3 (4.2%)1 (0.3%)
F. obliteration7 (9.7%)8 (2.8%)
Mucinous cystadenoma1 (1.4%)5 (1.7%)
Acute App + E. vermicularis0 (0.0%)1 (0.3%)
Acute App + diverticulitis0 (0.0%)1 (0.3%)
Acute App + F. obliteration0 (0.0%)3 (1.0%)
Acute App + eosinophilic infiltration0 (0.0%)1 (0.3%)
Low grade mucinous neoplasm1 (1.4%)0 (0.0%)