Effectiveness of a colonoscopic screening programme in first-degree relatives of patients with colorectal cancer.

AIM: The study aimed to assess the diagnostic yield of a colonoscopy screening programme in first-degree relatives of colorectal cancer (CRC) patients and to identify factors associated with advanced neoplasia. METHOD: We conducted a cross-sectional study. Individual characteristics, family trees and colonoscopy findings of asymptomatic first-degree relatives of CRC patients were collected. The findings were classified into cancer (invasive carcinoma and/or non-invasive high-grade neoplasia), high-risk adenomas (≥ 10 mm and/or a villous component) and low-risk adenomas (tubular < 10 mm). The dependent variable was the presence of advanced neoplasia, defined as cancer and/or high-risk adenoma. RESULTS: Two hundred and sixty-three relatives (147 females), 50.0 ± 11.5 (range, 25-75) years of age, agreed to participate out of a total of 618 who were invited (acceptance rate 42.5%). Index cases were diagnosed at 63.8 ± 12.4 (range, 37-88) years of age. The closest familial relationship was parent/offspring in 168 (63.9%) participants and sibling in 95 (36.1%) participants; 14.8% had three or more relatives with CRC/cancer associated with Lynch syndrome, and two or more affected generations were identified in 24.0%. Advanced neoplasia was found in 56 (21.3%) participants. Of these, invasive cancer, non-invasive high-grade neoplasia and high-risk adenomas were detected in five (1.9%), six (2.3%) and 45 (17.1%) participants, respectively. Low-risk adenomas were detected in 20 (7.6%) participants. Male sex (odds ratio, 2.59; P = 0.003) and sibling relationship (odds ratio, 2.74; P = 0.001) were independently associated with advanced neoplasia. CONCLUSION: We detected advanced neoplasia in a considerable number of participants. Our data support colonoscopy screening in first-degree relatives of patients with CRC at an earlier age than in the medium-risk population. Male sex and sibling relationship were predictors of advanced neoplasia.

[Referrals to a gastroenterology outpatient clinic: differences according to patients' geographical origin]. / Derivaciones a consultas de aparato digestivo: diferencias en función del medio geográfico de procedencia.

INTRODUCTION: The characteristics of users of the Spanish public health system have been evaluated in multiple studies. However, these studies usually refer to users of primary care and emergency services and less frequently to users of specialized services. Some studies have described differences according to patients' geographical origin. OBJECTIVE: To analyze the demographic profile of patients attending our gastroenterology outpatient clinic over a prolonged period. PATIENTS AND METHOD: The geographical origin, age and sex of all patients referred for an initial consultation in the gastroenterology outpatient clinic from 2001-2003 were analyzed. RESULTS: Women accounted for 53.7% of all appointments but no significant differences in referral rates were observed in comparison with men. A total of 65.5% of patients were from urban areas and the referral rate was significantly higher in these patients than in those from rural areas, although attendance rates were equal between patients from the two types of area. Referral rates increased in direct proportion with age; a predominance of referrals was observed in women aged < 74 years and in men aged 75 years or older. Some discrepancies were found among the distinct years analyzed. CONCLUSIONS: In our catchment area, demand is greater in the urban population than in the rural population. No overall differences were found in sex but significant differences were found in age and length of follow-up.

Duodenal compression caused by superior mesenteric artery: study of 10 patients.

BACKGROUND: the compression of the third portion of the duodenum by the superior mesenteric artery (aorto-mesenteric clamp) is a rare cause of abdominal pain. Its clinical appearance may range between an asymptomatic and accidental radiological finding and an acute duodenal ileus (superior mesenteric artery syndrome), which requires urgent surgical intervention. METHODS: we revised all of the reports of upper gastrointestinal tract contrast-medium study (which included the duodenum) made in our hospital between May 1999 and April 2002. We analysed the case history of those patients with a radiological image compatible with aorto-mesenteric clamp. RESULTS: of the 1280 studies analysed, 10 of them (0,78%) were compatible with an aorto-mesenteric clamp. The 10 patients were females whose mean age was 25,7 years (range 9-77) that consulted for different abdominal discomfort. The symptoms of the 9 youngest patients were not typical of duodenal obstruction and their evolution was favourable. In the eldest patient, the clinical data were compatible with a mesenteric superior artery syndrome, although a subsequent study showed the presence of a colon adenocarcinoma. CONCLUSIONS: the aorto-mesenteric clamp is a rare radiological finding (<1 %) which does not always justify the supported clinical data. In our series, 9 cases were considered non-obstructive aorto-mesenteric clamps, although some of them showed pathogenical factors (scoliosis and thinness). The superior mesenteric artery syndrome should be considered as a diagnosis of exclusion after performing an adequate clinical study when the situation of the patient requires it.