Colonoscopic yield of colorectal neoplasia in daily clinical practice

Table 2 Yield of advanced neoplasia per indication in all complete colonoscopies n (%)

Indication cluster	Right-sided advanced neoplasia	Left-sided advanced neoplasia	Synchronous left- and right-sided advanced neoplasia	Total number of patients with advanced neoplasia
G-I bleeding (n = 696)	19 (11)	146 (83)	11 (6)	176 (25)
Anemia (n = 356)	35 (57)	21 (34)	5 (8)	61 (17)
CRC suspicion (n = 204)	29 (33)	54 (61)	6 (7)	89 (44)
Weight loss (n = 101)	2 (22)	7 (78)	0	9 (9)
Family history CRC1 (n = 447)	10 (30)	19 (58)	4 (12)	33 (7)
IBS (n = 969)	22 (26)	57 (66)	7 (8)	86 (9)
IBD exacerbation (n = 256)	1 (33)	2 (67)	0	3 (1)
CRC surveillance (n = 454)	11 (29)	23 (60)	4 (11)	38 (8)
Polyp surveillance (n = 583)	29 (41)	36 (51)	6 (8)	71 (12)
IBD surveillance (n = 142)	3 (43)	4 (57)	0	7 (5)
FAP/HNPCC surveillance (n = 84)	2 (25)	5 (63)	1 (13)	8 (10)
Other/Non-specified2 (n = 331)	20 (48)	21 (50)	1 (2)	42 (13)
Total (n = 4623)	183 (29)	395 (63)	45 (7)	623 (13)

¹Known hereditary CRC syndromes like HNPCC, FAP or MYH-polyposis are excluded;

²Including no indication mentioned, ileus and desufflation therapy, fecal incontinence, monitoring diverticulitis after treatment, tenesmus and endoscopic treatment radiation enteritis. NB: Within the indication cluster, the numbers of patients are placed between brackets.