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Endometrial hyperplasia is a condition of excessive proliferation of the cells of the endometrium, or inner lining of the uterus.. Most cases of endometrial hyperplasia result from high levels of estrogens, combined with insufficient levels of the progesterone-like hormones which ordinarily counteract estrogen's proliferative effects on this tissue.
Uterine hyperplasia, or enlarged uterus, is a medical symptom in which the volume and size of the uterus in a female is abnormally high. It can be a symptom of medical conditions such as adenomyosis , uterine fibroids , ovarian cysts , and endometrial cancer .
Atypical endometrial hyperplasia may represent an early neoplastic process which can lead to endometrial adenocarcinoma. [20] The development of endometrial adenocarcinoma from endometrial hyperplasia is a typical example of how the effects of pathologic hyperplasia can lead to neoplasia, and females who exhibit hyperplasia of the endometrium ...
Metropathia haemorrhagica, also known as metropathia haemorrhagica cystica, is a menstrual disorder which is defined as a specialized type of anovulatory dysfunctional uterine bleeding associated with endometrial hyperplasia and intermenstrual bleeding.
This type of tumor can metastasize and can cause cystic endometrial hyperplasia. [165] Uterine cancer* is very rare in dogs. The most common type is benign leiomyoma. [165] Bladder cancer* is usually malignant in dogs. The most common type is transitional cell carcinoma. [165] Liver cancer* is usually metastatic in dogs.
Endometrial Topography Functional Category Treatment Benign endometrial hyperplasia: Diffuse: Hormone (estrogen) Effect: Hormonal therapy EIN, Endometrial Intraepithelial Neoplasia: Focal progressing to diffuse (clonal) Precancer: Hormonal or surgical Endometrial Adenocarcinoma: Focal progressing to diffuse (clonal) Cancer: Surgical stage-based
Without implantation of a fertilized egg, the endometrial lining is either reabsorbed (estrous cycle) or shed (menstrual cycle). In the latter case, the process of shedding involves the breaking down of the lining, the tearing of small connective blood vessels, and the loss of the tissue and blood that had constituted it through the vagina .
The histopathology of endometrial cancers is highly diverse. The most common finding is a well-differentiated endometrioid adenocarcinoma, [50] which is composed of numerous, small, crowded glands with varying degrees of nuclear atypia, mitotic activity, and stratification. This often appears on a background of endometrial hyperplasia.