title: Transient small-bowel intussusceptions in adults: significance of ultrasonographic detection.
abstract: OBJECTIVE
  To investigate the frequency, clinical significance, and outcome of small-bowel intussusceptions in adults detected using ultrasound in an outpatient setting.
  
  
  METHODS
  In two different retrospective (January 2001 to April 2003) and prospective (May 2003 to June 2005) periods, 33 small-bowel intussusceptions were found in 32 patients (13 females; mean age: 38.1 years) with known or suspected intestinal disease. Patients underwent diagnostic work-up to assess any organic disease. Patients with self-limiting intussusception were submitted to clinical and ultrasonographic follow-up.
  
  
  RESULTS
  Of the 32 patients with small-bowel intussusception, 25 were identified in the prospective series of 4487 examinations (0.53%) and seven in the retrospective series of 5342 examinations (0.15%; p=0.002). Four patients had persistent and 28 self-limiting intussusceptions. Self-limiting intussusceptions were idiopathic in 11 patients (39%) or associated with organic diseases in 17 (Crohn's disease in 11 patients, celiac disease in three, ulcerative colitis in one patient, and previous surgery for cancer in two). Self-limiting intussusceptions were asymptomatic in 25% of patients.
  
  
  CONCLUSIONS
  Small-bowel intussusceptions in adults are not rare and are frequently self-limiting, idiopathic, or related to organic diseases, mainly Crohn's disease and coeliac disease.
authors.affiliation: Chair of Gastroenterology, Department of Clinical Sciences, L. Sacco University Hospital, Milan, Italy. giovanni.maconi@unimi-it
authors.forename: G
authors.initials: G
authors.lastname: Maconi
authors.forename: E
authors.initials: E
authors.lastname: Radice
authors.forename: S
authors.initials: S
authors.lastname: Greco
authors.forename: C
authors.initials: C
authors.lastname: Bezzio
authors.forename: G
authors.initials: G
authors.lastname: Bianchi Porro
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D007421:Intestine, Small / Q000000981:diagnostic imaging*; D007443:Intussusception / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012189:Retrospective Studies; D014463:Ultrasonography