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Endometrial intraepithelial neoplasia (EIN) is a premalignant lesion of the uterine lining that predisposes to endometrioid endometrial adenocarcinoma. It is composed of a collection of abnormal endometrial cells, arising from the glands that line the uterus , which have a tendency over time to progress to the most common form of uterine cancer ...
By contrast, CTNNB1 mutations are significantly different in low-grade ovarian endometrioid carcinomas (53%) compared with low-grade endometrial endometrioid carcinomas (28%). This difference in CTNNB1 mutation frequency may be reflective of the distinct tumoral microenvironments ; the epithelial cells lining an endometriotic cyst within the ...
Serous carcinoma is a Type II endometrial tumor that makes up 5–10% of diagnosed endometrial cancer and is common in postmenopausal women with atrophied endometrium and black women. Serous endometrial carcinoma is aggressive and often invades the myometrium and metastasizes within the peritoneum (seen as omental caking ) or the lymphatic system.
Carcinosarcoma of the uterus. In gross appearance, MMMTs are fleshier than adenocarcinomas, may be bulky and polypoid, and sometimes protrude through the cervical os.On histology, the tumors consist of adenocarcinoma (endometrioid, serous or clear cell) mixed with the malignant mesenchymal elements; alternatively, the tumor may contain two distinct and separate epithelial and mesenchymal ...
High grade anal intraepithelial neoplasia. Progression of pancreatic intraepithelial neoplasia, including mutations. [1] Cervical intraepithelial neoplasia (CIN), spanning a bit more than 2/3 of the thickness of the cervical epithelium. Intraepithelial neoplasia (IEN) is the development of a benign neoplasia or high-grade dysplasia in an ...
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.
Adenomyomas containing endometrial glands are also found outside of the uterus, most commonly on the uterine adnexa but can also develop at distant sites outside of the pelvis. [3] Gallbladder adenomyoma, the localized form of adenomyomatosis , is a polypoid tumor in the gallbladder composed of hyperplastic mucosal epithelium and muscularis ...
A dysgerminoma is a type of germ cell tumor; [1] it usually is malignant and usually occurs in the ovary.. A tumor of the identical histology but not occurring in the ovary may be described by an alternate name: seminoma in the testis [2] or germinoma in the central nervous system or other parts of the body.