Clinical predictors for sessile serrated polyposis syndrome: A case control study

Table 1 Characteristics of patients with serrated polyposis syndrome n (%)

Study population (n = 40)
Women	30 (75)
Age in years, mean ± SD	45 ± 18.54
Ethnicity
Caucasian	39 (98)
Other	1 (2)
First Degree Relative with CRC
Present	12 (35)
Absent	22 (65)
Smoking status
Current Smoker/Ex-smoker	318 (48)
BMI (kg/m2), mean ± SD	25 ± 4.7
WHO Criteria
1	30 (75)
2	0
3	10 (25)
Mean number of total polyps	13
Mean number of serrated polyps during first colonoscopy	7
Mean size of largest polyp (mm)	17
Location of largest polyp
Caecum	13 (32)
Ascending colon	16 (40)
Transverse colon	5 (13)
Descending colon	2 (5)
Sigmoid colon	4 (10)

SPS: Serrated polyposis syndrome.

Table 2 Endoscopic features of each polyp groups

	SPS n = 40Number/mean	Adenoma n = 40Number/mean	SSA n = 40Number/mean	P value for comparison between groups
Patients with concurrent adenoma				0.49
Yes	17 (42)		21 (52)
No	23 (58)		19 (48)
Total Number of Polyps	13	1.4	3.4	0.001
Patients with a polyp > 15 mm
Yes	30 (75)	3 (7.5)	21 (52)	0.04
No	10 (25)	37 (92.5)	19 (48)
Size of largest polyp (mm)	17	7.8	13.5	0.014

SPS: Serrated polyposis syndrome; SSA: Sessile serrated adenoma.