Endoscopic and pathological features of 17 cases of colorectal cap polyposis
10.13315/j.cnki.cjcep.2025.10.008
- VernacularTitle:结直肠帽状息肉17例内镜及病理特征分析
- Author:
Xinyue GAO
1
;
Zhenkai WANG
;
Shuliang HUANG
;
Dianmei HAN
;
Yueyang LU
;
Qin SHEN
Author Information
1. 南京市中心医院病理科,南京 210018
- Publication Type:Journal Article
- Keywords:
cap polyposis;
cap-like structure;
granulation tissue;
inflammatory polyp;
endoscopic manifestations;
pathological features
- From:
Chinese Journal of Clinical and Experimental Pathology
2025;41(10):1314-1318
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To explore the clinicopathological features and endoscopic manifestations of cap polyposis(CP).Methods Clinical,endoscopic,pathological,and follow-up data of 17 cases of CP were collected and ana-lyzed.Results There were 14 males and 3 females,aged 15-67 years,with a mean age of 36.5 years.The disease duration ranged from 2 weeks to 5 years,and most patients(64.7％,11/17)had symptoms for more than l year.The most common clinical manifestation was hematochezia(82.4％,14/17),while constipation was generally absent.En-doscopically,all lesions(100％,17/17)were located in the anal canal and lower rectum.The surface was invariably covered with a thick whitish exudate(100％,17/17),and annular growth was the most frequent pattern(76.5％,13/17).Pathologically,the mucosal layer was almost entirely replaced by granulation tissue,and the surface showed extensive inflammatory necrosis forming a cap-like structure.Conclusion CP predominantly occurrs in the anal canal and lower rectum of young men.The presence of abundant whitish exudate under endoscopy is differential diagnostic value.Complete endoscopic resection followed by pathological examination is required for definitive diagnosis.
