What causes cysts in the uterus?

Uterine cyst is also known as Na's cyst, is one of the manifestations of chronic cervicitis. In the process of cervical erosion, glandular glands are covered by squamous epithelium, due to connective tissue proliferation around the glandular duct, so that glandular obstruction or narrowing, secretions can not be excluded and left in the tube, forming many large and small cysts, small and rice as big, large and soybean as big, the color was bluish white. Uterine cysts, most of them are benign, there are few cases of malignant lesions, small cysts do not need treatment, regular review can be done, will not affect the body. If the cyst size is relatively large, surgery can be taken to remove.