Journal List > Korean J Pediatr Gastroenterol Nutr > v.12(1) > 1110163

Korean J Pediatr Gastroenterol Nutr. 2009 Mar;12(1):10-15. Korean.
Published online Mar 31, 2009.
Copyright © 2009 The Korean Society of Pediatric Gastroenterology, Hepatology and Nutrition
Clinical Spectra of Auto-amputated Polyps: Comparison of Juvenile Polyps and Meckel's Diverticula
Jae Young Kim,* Jae Hong Park, Gwang Hae Choi, and Byung Ho Choe
Department of Pediatrics, Chungnam National University, Daejeon, Korea.
*Department of Pediatrics, Busan National University, Busan, Korea.
Department of Pediatrics, Youngnam University, Daegu, Korea.
Department of Pediatrics, Gyeongbuk National University, School of Medicine, Daegu, Korea.


The manner of rectal bleeding of auto-amputated polyps (AP) is similar to juvenile polyps (JP) or Meckel's diverticula (MD). We conducted this study to characterize the clinical spectrum of AP.


Fourteen patients were enrolled this study who were diagnosed AP due to painless rectal bleeding. The clinical data of AP was assessed and then compared with the clinical data of JP and MD retrospectively.


The prevalence of AP was 10.4% (14/135) and high in younger patients compared with that of JP (p=0.042 below 2 years). Whereas JP was more common in patients aged 2 to 5 years (p=0.005). Male was predominant in AP (p=0.008 AP vs JP). The manner of rectal bleeding in AP group was sudden and transient. There was no significant difference in time interval between onset of rectal bleeding and diagnosis between the 3 groups. However AP was diagnosed in 9 patients (64.3%) within 7 days after onset of rectal bleeding, but JP was diagnosed in 5 patients (4.1%) in the same period (p<0.001). All of AP were located in the rectum and the sigmoid colon. The mean hemoglobin was 11.3±1.5 g/dL in AP, 11.8±1.3 g/dL in JP, and 8.4±1.2 g/dL in MD (p<0.001, only significant in MD).


AP may be considered in male older than 1 year with transient and sudden onset or increase of painless rectal bleeding without drop of hemoglobin level.

Keywords: Painless rectal bleeding; Auto-amputated polyps; Juvenile polyps; Meckel's diverticulum