A therapeutic Guideline of Gallbladder Polyps in Laparoscopic Era / 한국간담췌외과학회지

ABSTRACT

BACKGROUND/AIMS: The nature of gallbladder polyp is obscure before operation, and surgical indication is still controversial. The aim of this study is to suggest the therapeutic guideline for patients with the gallbladder polyps in the laparoscopic era. METHODS: Among 49 patients who received cholecystectomy because of gallbladder polyp from January 1, 1992 to December 31, 2000 in Department of Surgery, Seoul Municipal Boramae Hospital, we studied 42 histopathologically confirmed gallbladder polyp patients retrospectively. These patients were divided into two groups as true polyp(adenoma, carcinoma) and pseudopolyp(cholesterol, inflammatory, hyperplastic), and clinical characteristics were compared between the groups. RESULTS: The mean age was 48.19+/-11.09 years and male to female ratio was 1725 in all patients. Of 42 patients, 32 pseudopolyps(76.2%) and 10 true polyps(23.8%) were confirmed by pathologic examination. Of 32 pseudopolyps, cholesterol polyps(29cases, 90.6%) were most common type. 4 carcinomas and 6 adenomas were included in 10 true polyps. Of 6 adenomas, coexistence with dysplasia was present in two cases. 1 case of carcinoma was present as arising from underlying tubular adenoma. Compared with pseudopolyp, true polyp showed significant larger size in diameter than psedopolyp(p=0.014). Despite of these statistical difference, 44% of pseudopolyps was more than 10mm in maximum diameter. 2 cases of true polyp(20%) was less than 10mm. However all of the other clinical features such as, the patients's age, sex, symptom, presence of gallstones, and number of polypoid lesion were not significantly different between the groups. All 4 carcinoma patients received laparoscopic cholecystectomy are disease free state with mean 68.5 months follow-up period. CONCLUSION: Although true polyps showed statistically significant larger than pseudopolyps in maximum diameter, there was no clear cut point dividing the two groups. All of the other clinical characteristics could not differentiated true polyps from pseudopolyps. Because of the low morbidity of laparoscopic procedure, premalignant potential of gallbladder adenoma and the adenoma-carcinoma sequence are unquestionable, an aggressive surgical intervention should be proposed in the era of laparoscopic surgery.