大肠息肉Symptoms有哪些
Jun 21, 2024
Source: Cainiu Health
Dr. Shen Yonghua
Introduction
大肠息肉通常是指大肠黏膜表面向肠腔内突出的隆起性病变，多数为良性，但部分息肉存在恶变的风险。大肠息肉早期可能无明显Symptoms，随着息肉增大或出现并发症，Patient可能出现便血、腹痛、排便习惯改变、贫血、体重下降等Symptoms。
Colorectal polyps usually refer to raised lesions that protrude from the mucosal surface into the lumen of the large intestine. Most are benign, but some carry a risk of malignant transformation. In early stages, colorectal polyps may not cause obvious symptoms; however, as the polyps grow or complications develop, patients may experience symptoms such as rectal bleeding, abdominal pain, changes in bowel habits, anemia, and weight loss. Individuals suspected of having colorectal polyps should seek medical attention promptly and undergo colonoscopy for definitive diagnosis. The symptoms are analyzed as follows:
1. Rectal bleeding: Erosion, ulceration, or detachment of the polyp surface may lead to rectal bleeding, manifesting as bright red or dark red blood mixed in the stool, sometimes accompanied by mucus.
2. Abdominal pain: Larger polyps or those in specific locations—such as near the intestinal wall or areas of luminal narrowing—may cause intestinal obstruction or intussusception, resulting in abdominal pain, and in severe cases, intense colicky pain.
3. Changes in bowel habits: Colorectal polyps may irritate the intestine, leading to increased frequency of defecation or constipation. The stool shape may become narrower or flattened.
4. Anemia: Chronic rectal bleeding can result in excessive iron loss, causing iron-deficiency anemia, which manifests as pallor, fatigue, palpitations, and shortness of breath.
5. Weight loss: Some patients may experience unexplained weight loss, possibly related to impaired digestion and absorption, or it may indicate a malignant polyp.
Depending on the nature and size of the polyps, doctors may recommend treatments such as endoscopic mucosal resection, laser ablation, or polypectomy. Additionally, patients should maintain healthy lifestyle habits, including regular health screenings, a balanced diet, and moderate physical activity, which help prevent the development and progression of colorectal polyps.
