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Increased Risk of Colorectal Cancer in Patients With Multiple Serrated Polyps and Their First-Degree Relatives

2017; Elsevier BV; Volume: 153; Issue: 1 Linguagem: Inglês

10.1053/j.gastro.2017.04.003

1528-0012

Cecilia Egoavil, Míriam Juárez, Carla Guarinós, María Rodríguez‐Soler, Eva Hernández‐Illán, Cristina Alenda, Artemio Payá, Adela Castillejo, Anna Serradesanferm, Luís Bujanda, Fernando Fernández–Bañares, Joaquín Cubiella, Luisa de–Castro, Ana Guerra, Elena Aguirre, Alberto Herreros de Tejada, Xavier Bessa, Maite Herráiz, José Carlos Marín-Gabriel, Judith Balmañà, Virgı́nia Piñol, Francisco Rodríguez‐Moranta, David Nicolás‐Pérez, Míriam Cuatrecasas, Francesc Balaguer, Antoni Castells, José Luís Soto, Pedro Zapater, Rodrigo Jover,

Colorectal Cancer Treatments and Studies

Background & AimsWe investigated whether patients with multiple serrated polyps, but not meeting the World Health Organization criteria for serrated polyposis syndrome, and their relatives have similar risks for colorectal cancer (CRC) as those diagnosed with serrated polyposis.MethodsWe collected data from patients with more than 10 colonic polyps, recruited in 2008–2009 from 24 hospitals in Spain for a study of causes of multiple colonic polyps.We analyzed data from 53 patients who met the criteria for serrated polyposis and 145 patients who did not meet these criteria, but who had more than 10 polyps throughout the colon, of which more than 50% were serrated. We calculated age- and sex-adjusted standardized incidence ratios (SIRs) for CRC in both groups, as well as in their first-degree relatives.ResultsThe prevalence of CRC was similar between patients with confirmed serrated polyposis and multiple serrated polyps (odds ratio, 1.35; 95% confidence interval [CI], 0.64–2.82; P = .40). The SIR for CRC in patients with serrated polyposis (0.51; 95% CI, 0.01–2.82) did not differ significantly from the SIR for CRC in patients with multiple serrated polyps (0.74; 95% CI, 0.20–1.90; P = .70). The SIR for CRC also did not differ significantly between first-degree relatives of these groups (serrated polyposis: 3.28, 95% CI, 2.16–4.77; multiple serrated polyps: 2.79, 95% CI, 2.10–3.63; P = .50). Kaplan–Meier analysis showed no differences in the incidence of CRC between groups during the follow-up period (log-rank, 0.6).ConclusionsThe risk of CRC in patients with multiple serrated polyps who do not meet the criteria for serrated polyposis, and in their first-degree relatives, is similar to that of patients diagnosed with serrated polyposis. We investigated whether patients with multiple serrated polyps, but not meeting the World Health Organization criteria for serrated polyposis syndrome, and their relatives have similar risks for colorectal cancer (CRC) as those diagnosed with serrated polyposis. We collected data from patients with more than 10 colonic polyps, recruited in 2008–2009 from 24 hospitals in Spain for a study of causes of multiple colonic polyps. We analyzed data from 53 patients who met the criteria for serrated polyposis and 145 patients who did not meet these criteria, but who had more than 10 polyps throughout the colon, of which more than 50% were serrated. We calculated age- and sex-adjusted standardized incidence ratios (SIRs) for CRC in both groups, as well as in their first-degree relatives. The prevalence of CRC was similar between patients with confirmed serrated polyposis and multiple serrated polyps (odds ratio, 1.35; 95% confidence interval [CI], 0.64–2.82; P = .40). The SIR for CRC in patients with serrated polyposis (0.51; 95% CI, 0.01–2.82) did not differ significantly from the SIR for CRC in patients with multiple serrated polyps (0.74; 95% CI, 0.20–1.90; P = .70). The SIR for CRC also did not differ significantly between first-degree relatives of these groups (serrated polyposis: 3.28, 95% CI, 2.16–4.77; multiple serrated polyps: 2.79, 95% CI, 2.10–3.63; P = .50). Kaplan–Meier analysis showed no differences in the incidence of CRC between groups during the follow-up period (log-rank, 0.6). The risk of CRC in patients with multiple serrated polyps who do not meet the criteria for serrated polyposis, and in their first-degree relatives, is similar to that of patients diagnosed with serrated polyposis.