Clinical characteristics of XXXX .

@entity5 @entity1 @entity14 @entity3
PURPOSE: The @entity5 was recently categorized as a @entity5 due to its possibility of @entity3 . This study was aimed to investigate the clinical characteristics and the metastatic rate of @entity14 . METHODS: Charts were reviewed for 502 @entity1 diagnosed with and treated for @entity14 between January 2006 and December 2009. The location, size, depth and metastatic status of the @entity5 were collected. RESULTS: Including 24 @entity5 from 12 @entity1 , 514 @entity5 were removed. Most of them were found in the rectum (97.3%). The male-to-female ratio was 1.38 to 1, and mean age was 50.2    11.4 years. The mean @entity5 size was 5.8    3.6 mm. Less than 10-mm-sized @entity5 had a 1.95% lymph node metastatic rate; @entity5 with sizes from 10 mm to 20 mm and larger than 20 mm had 23.5% and 50% lymph node metastatic rates, respectively. Two cases had distant @entity3 ; one with a 22-mm-sized @entity5 metastasized to the liver, and the other with a 20-mm-sized @entity5 metastasized to the peritoneum. Among 414 @entity1 who completed metastatic studies, 93.8% were classified as stage I, 0.9% as stage II, 4.8% as stage III and 0.5% as stage IV. CONCLUSION: @entity14 smaller than 10 mm have a low rate of lymph node @entity3 , but those sized 10 mm or larger incur significant risk. Further investigation regarding additional risk factors should be done to develop proper treatment guidelines for these @entity5 .
