papillary adenoma
Introduction
Introduction to papillary adenoma Papillary adenoma is also known as villous adenoma in clinical practice. It is different from polypoid adenoma, which is characterized by adenoma bulge in the intestinal wall is not very prominent. The surface is rough and fluffy, and is considered to be a precancerous lesion due to the high chance of canceration. The incidence of the elderly over 60 years old is more common, and the papillary adenoma that occurs in the rectum and sigmoid colon is about 90%. In many reports, papillary adenoma can be converted to cancer by about 75%. basic knowledge The proportion of illness: 0.003% Susceptible people: good for the elderly Mode of infection: non-infectious Complications: dehydration, electrolyte imbalance
Cause
The cause of papillary adenoma
Most of the papillary adenomas grow in broad-based form, without long pedicle type polyps. The tumor is slightly higher than the normal mucosal surface, and the area spread to the periphery is large. Typical cases may involve most of the circumference of the intestine, and the surface of the tumor is Velvet or coarse or coarse hair shape, the color is slightly lighter than the general polypoid adenoma, often covered with a layer of mucus, the structure of the tumor is soft, and the pimp is lightly touched like a sponge, which is a blocky and pedicled papillary gland. There are very few tumors.
Pathological observation of the tumor is characterized by a majority of fine papillary branches, the center of the vascular connective tissue, the surface of a single columnar or stratified epithelium and goblet cells, glandular components of less structure, may have scattered poorly differentiated areas, The lesions are mainly confined to the mucosal layer, rarely occurring, and can be stored as a meaty adenoma.
Prevention
Papillary adenoma prevention
Without special precautions, the key is to find early treatment early.
Complication
Papillary adenoma complications Complications dehydration electrolyte disorder
Often leading to severe dehydration, electrolyte imbalance, circulatory failure, acidosis and other symptoms are life-threatening.
Symptom
Papillary adenoma symptoms common symptoms diarrhea circulatory failure dehydration
The main clinical manifestations are discharge of mucus, and the feeling of unresolved stool is often misdiagnosed as mucinous colitis and bacillary dysentery. Large papilloma can discharge a lot of mucus, which can be discharged together with feces or a large amount of mucus can be discharged alone. Diarrhea, the daily discharge of up to 3000mL or more, often lead to severe dehydration, electrolyte imbalance, circulatory failure, acidosis and other symptoms are life-threatening, due to the abnormal function of tumor cells caused by a large amount of liquid and mucus discharge.
Examine
Examination of papillary adenoma
Most of the papillary adenomas in the clinical diagnosis are examined by rectal examination. Proctoscopy or colonoscopy revealed that the adenoma is very soft, and the adenoma is very soft during the rectal examination. It needs to be carefully examined, otherwise it is easy to be ignored.
It is found that papillary adenomas should be carefully diagnosed with adenomas. The texture is uniform and soft. It is more likely to be a benign structure. The small nodules and hard tissues of the papillary adenomas must be highly alert to the possibility of cancer. Early diagnosis of papillary adenoma with carcinogenesis has certain feasibility. Papillary adenomas that are not well diagnosed by percussion can be examined by proctoscopy, sigmoidoscopy and colonic fiber speculum to determine the presence or absence of tumor. Carcinogenesis is possible, and tissue should be taken on the surface of the adenoma and different parts of the base for biopsy.
Diagnosis
Diagnosis and differentiation of papillary adenoma
Can be diagnosed based on clinical symptoms and laboratory tests.
The main clinical manifestations are the discharge of mucus, and the unexplained feeling of bowel movements. It is often misdiagnosed as mucinous colitis and bacillary dysentery. Most of the papillary adenomas in clinical diagnosis are examined by rectal examination, rectal or colonoscopy. Because the adenoma is very soft, and the adenoma is very soft during the rectal examination, it needs to be carefully examined, otherwise it is easy to be ignored. It is found that the papillary adenoma should be carefully diagnosed with adenoma.
