ABSTRACT
Juvenile polyps are relatively common polyps that affect predominantly young patients and may occur in isolated, multiple, and/or familial forms. They have been considered to be benign lesions without neoplastic potential, but for patients with multiple juvenile polyposis, the cumulative malignant risk is greater than fifty percents. In patients with a solitary polyp, the risks are minimal, and only a few cases of malignant change from a solitary juvenile polyp have been reported. We describe the case of a twenty one year old female with one solitary juvenile polyp, which contained a signet ring cell carcinoma in the mucosal layer.
Subject(s)
Female , Humans , Carcinoma, Signet Ring Cell , Colon , Colonic Polyps , PolypsABSTRACT
BACKGROUND: Clear cell hepatocelluar carcinoma (CHCC) is a well defined type of hepatocellular carcinoma (HCC) in which a large number of tumor cells have clear cytoplasm that is not stained by hematoxylin and eosin stain. It is generally reported that CHCC has a favorable prognosis compared with that of conventional non-CHCC.1 The reasons for the better prognosis are not clear. To date the clinicopathologic features of CHCC of the liver have not been fully elucidated. In the present study we compared the clinicopathologic features of 56 cases of CHCC with those of 479 cases of non-CHCC and report here hoping to further understanding of CHCC. METHODS: 535 consecutive cases that were curatively resected from Jan. 1992 to Dec. 1997 in Seoul National University Hospital were reviewed. The cases were divided into clear cell HCC (56 cases) and non-clear cell HCC (479 cases). Clinical and pathological findings were compared between two groups. RESULTS: Clinically there is no significant difference in sex or =2) of clear cell HCC was 3.8% (2/56), lower than the finding of 13.1% (62/479) for non-clear cell HCC. (p<0.05) CONCLUSION: It was concluded that clear cell HCC has no significant difference in clinicopathologic features except tumor number.