Clinical Gastroenterology Vol.26 No.12(4-3)

Theme Reappraisal of Colorectal Protruded and Flat Lesions Which are Encountered During Endoscopy
Title Juvenile Polyps and Inflammatory Myoglandular Polyps
Publish Date 2011/11
Author Hiroshi Kawano Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
Author Osamu Tsuruta Division of Gastroenterology, Division of GI endoscopy, Division of Endoscopy, Department of Medicine, Kurume University School of Medicine
Author Tetsuhiro Noda Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
Author Shuichiro Nagata Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
Author Yasuhiko Maeyama Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
Author Keita Nakahara Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
Author Keiichi Mitsuyama Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
Author Jun Akiba Division of Pathology, Kurume University School of Medicine
Author Michio Sata Division of Gastroenterology, Division of GI endoscopy, Department of Medicine, Kurume University School of Medicine
[ Summary ] Colorectal juvenile polyps have features similar to inflammatory myoglandular polyps. They are benign, nonneoplastic lesions which are reddish, sometimes covered by a fibrin cap, pedunculated or subpedunculated and primarily located on left side colon and in the transverse colon. Both polyps are recognized through the presence of hematochezia or anemia. However, there are some differences in the features at these two types of polyps. Juvenile polyps are hamartomas found in infants. On the other hand, inflammatory myoglandular polyps, which are not considered to be hamartomas are found in adults (30-50 years). Both types of polyps may lead to hematochezia or anemia. Therefore, when we observe polyps and diagnose them as juvenile polyps or inflammatory myoglandular polyps, it is advisable to resect them endoscopically.
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