Clinical and endoscopic characteristics of 15 cases of rectal benign lymphoid polyps
10.3760/cma.j.cn321463-20240603-00264
- VernacularTitle:直肠良性淋巴滤泡性息肉15例的临床及内镜下表现分析
- Author:
Xiaoyan LYU
1
;
Guoxia ZHANG
;
Chunli MENG
;
Hongbo REN
;
Guodong LI
Author Information
1. 邹平市人民医院消化内科，滨州 256200
- Publication Type:Journal Article
- Keywords:
Rectal diseases;
Benign lymphoid polyps;
Clinical symptoms;
Endoscopic features
- From:
Chinese Journal of Digestive Endoscopy
2025;42(9):726-730
- CountryChina
- Language:Chinese
-
Abstract:
To investigate the clinical symptoms and endoscopic features of rectal benign lymphoid polyps, a retrospective analysis was conducted on 15 consecutive cases (16 lesions) who underwent endoscopic resection at the First Affiliated Hospital of Shandong First Medical University between April 2015 and June 2023, with postoperative pathological confirmation of rectal benign lymphoid polyps. The results showed that among the 15 patients, 6 were male and 9 were female, with a mean age of 52.6 years. Colonoscopy was performed in 8 patients due to clinical symptoms, among whom 7 presented with abdominal pain. All 16 lesions were submucosal, including 14 solitary and 1 multiple. The lesions were located in the lower rectum ( n=10) and mid-rectum ( n=6), with a mean long diameter of 0.5 cm. Fourteen lesions exhibited regular shape as flat circles or hemispheres. The surface mucosa appeared normal or gray-white in 11 lesions, and varying degrees of capillary dilation were observed in 8 lesions, among which 2 exhibited prominent capillaries resembling a "wheel-shaped" pattern. Endoscopic ultrasonography (EUS) was performed in 10 lesions prior to endoscopic resection: 4 originated from the third layer, 3 from the second layer, and 3 from both the second and third layers. Five lesions appeared as homogeneous hypoechoic masses, 3 were hyperechoic, and 2 showed mixed echogenicity. Therefore, the clinical symptoms of rectal benign lymphoid polyps are non-specific. Endoscopically, the presence of "wheel-shaped" pattern of dilated capillaries may serve as a diagnostic clue. When EUS demonstrates hyperechoic or mixed echogenicity, it could aid in the differential diagnosis from rectal neuroendocrine neoplasms.
