Unusual histopathological findings in appendectomy specimens from patients with suspected acute appendicitis

Table 1 Clinicopathologic characteristics of the 1621 patients who underwent appendectomy n (%)

Patient characteristics	Results
Patients	1621
Sex
Male	912 (56.3)
Female	709 (43.7)
Age in years, mean (range)
Overall	36.7 ± 17.4 (16-94)
Male	36.2 ± 17.5 (16-89)
Female	37.3 ± 17.3 (16-94)
Distribution of patients according to age range (yr)
16-20	275
21-30	526
31-40	290
41-50	165
51-60	146
61-70	134
≥ 71	85
Histopathologic findings
Suppurative appendicitis	789 (48.7)
Appendix vermiformis	370 (22.8)
Gangrenous appendicitis-perforated	243 (15.0)
Unusual histopathologic findings	134 (8.3)
Phlegmonous appendicitis	53
Gangrenous appendicitis	32
Age distribution of the 370 patients with negative appendectomy (yr)
16-20	67
21-30	111
31-40	61
41-50	35
51-60	32
61-70	43
≥ 71	21