Obviously strengthened nodules in the middle and lower rectum may be caused by the repeated stimulation of enteritis, resulting in hyperplasia and adenoma of the rectal mucosa, and may also be caused by malignant tumors. 1. enteritis may be triggered by infection, it may also be caused by some non-infectious factors, the more common cause may be due to diet, common symptoms include abdominal pain, diarrhea, nausea, vomiting, etc. Usually the treatment of enteritis should firstly clarify the cause of the disease, and generally need medication, such as xanthin, yuan hu painkillers, gastrointestinal spirit. 2. Rectal mucosal hyperplasia, adenoma, such as a large mass, some patients can be seen under the imaging enhanced nodular foci. Endoscopic or surgical treatment can be performed according to the size of the mass, etc. 3. Malignant tumors: most of the malignant intestinal tumors are cancers, and there are many types of intestinal cancers, such as low, medium and highly differentiated cancers. Obvious strengthening nodules can be seen under imaging. However, pathologic examination is needed to confirm the diagnosis. Depending on the condition, surgery, chemotherapy and radiotherapy may be performed. If you find a similar condition, you should go to the hospital for treatment in time to avoid missing the best treatment time.