colon leiomyoma
Introduction
Introduction to colonic leiomyoma Leiomyoma of colon is very rare. There were 37 cases reported before 1966 in foreign countries, and 2 cases were reported in China from 1983. There were cases reported in the following cases. The main clinical manifestations of this disease are abdominal pain, changes in bowel habits, gastrointestinal bleeding, abdominal mass and intestinal obstruction. Abdominal pain is a common symptom, which usually occurs before or before the tumor is found. When the mass is less than 3cm, the symptoms of abdominal pain are rare. Most of them are dull pain or pain. The location is not exact. It may be caused by the tumor pulling or pressing adjacent tissue or part. Caused by intestinal obstruction. basic knowledge The proportion of sickness: 0.007% Susceptible people: no special people Mode of infection: non-infectious Complications: gastrointestinal bleeding, shock, intestinal obstruction
Cause
Causes of colonic leiomyomas
Causes:
It is generally believed that embryogenic, chronic irritation and methyl cholestyramine concentrations in feces are too high.
Pathogenesis:
Colonic leiomyoma occurs in the muscular layer or mucosal muscle layer of the intestinal wall, and is derived from the vascular muscle layer. The tumor is mostly single, and the diameter can be as small as 1cm and as large as 10cm. It can be divided into intestinal lumen according to the tumor growth mode. , outside the intestine, in the intestinal wall and outside the lumen of the cavity at the same time, which is mostly in the growth of the cavity, Starr et al reported 65.8% subserosal type, 15.8% between the wall, 10.5% inside and outside the cavity, submucosal Type 7.9%, the tumor can be spherical, hemispherical, partially lobulated, with clear perimeter and no envelope.
Prevention
Colonic leiomyoma prevention
Colonic leiomyoma occurs in the muscular layer or mucosal muscle layer of the intestinal wall. Individual tumors derived from vascular myometrial tumors are mostly single. The rare prognosis of colonic leiomyomas is better than that in the duodenum and rectum. You can eat more nutritious, well-absorbed, well-digested foods. The taste is light, eat less and eat more, eat more fresh vegetables, fruits and mushrooms. Adjust daily life and workload, and regularly carry out activities and exercise to avoid fatigue. Keep your mood steady and avoid emotional excitement and tension. Keep the stool smooth, avoid using stools, eat more fruits and high-fiber foods. Avoid cold irritation and keep warm.
Complication
Colonic leiomyoma complications Complications, gastrointestinal bleeding, intestinal obstruction
1. Gastrointestinal hemorrhage: often a small amount of intermittent bleeding, duration of time, occasional hemorrhage caused by shock.
2. Intestinal obstruction caused by compression of the mass.
Symptom
Symptoms of colonic leiomyoma Common symptoms Abdominal pain Abdominal mass swelling pain Shock
The main clinical manifestations are abdominal pain, changes in bowel habits, gastrointestinal bleeding, abdominal masses and intestinal obstruction. In general, colonic leiomyoma often has no specific symptoms. Gastrointestinal hemorrhage is often intermittent small amount of bleeding, duration varies, even In patients with shock caused by hemorrhage, the main cause of bleeding is the compression of the mass or the formation of ischemic necrosis and surface ulcer in the central part of the tumor. The abdominal pain is a common symptom, which usually occurs before the bleeding or before the tumor is found. When the mass is less than 3cm, the symptoms of abdominal pain are rare. Most of them are dull pain or pain. The location is not exact. It may be caused by tumor traction, compression of adjacent tissues or partial intestinal obstruction.
The clinical diagnosis of colonic leiomyoma is difficult and often misdiagnosed.
Examine
Examination of colonic leiomyoma
Colonoscopy biopsy has a certain reliability in the diagnosis of submucosal leiomyoma, but it does not help much in the diagnosis of other types of cases.
1. X-ray features:
(1) The inter-wall type is often caused by a small tumor without X-ray signs.
(2) Submucosal type is a rounded filling defect with a neat inner edge of the intestine. The mucosal folds become thinner due to the upward pulling of the tumor, and sometimes the filling defect has a typical "umbilical center" ulcer or deep sinus filling the defect.
(3) There is no X-ray sign when the subserosal type is very small, and a large extra-intestinal soft tissue mass may appear.
(4) The internal and external types of the cavity can cause double signs of filling defects in the cavity and compression outside the cavity.
2. Ultrasound and CT examination:
It is helpful to understand the location of the mass, the relationship between the size and the intestinal wall, and the presence or absence of cystic changes, thus having a differential diagnosis of the tumor being inflammatory or neoplastic.
Diagnosis
Diagnosis and differential diagnosis of colonic leiomyoma
diagnosis
1. Clinical manifestations.
2. Laboratory and other auxiliary inspections.
Differential diagnosis
Colonic leiomyoma needs to be differentiated from colon adenomas, lipomas, colon cancers, and extraintestinal masses, in addition to the identification of appendicitis or cysts.
