The most common type of uterine cancer starts in the lining of the uterus, or uterine wall, called the endometrium. This is why uterine cancer is also commonly referred to as endometrial cancer.
Types of uterine cancer include:
- Endometrial adenocarcinoma. The most common type of uterine cancer, starts in the glands of the endometrium. About 80 percent of uterine cancers are adenocarcinomas, and vary in degree of severity.
- Adenosquamous carcinoma. Comprising about ten percent of uterine cancers, adenosquamous carcinoma contains two types of cells: squamous cells (thin, flat cells that line certain organs) and gland-like cells.
- Papillary serous carcinoma. An aggressive cancer that tends to return even when caught early. It represents five percent of uterine cancers.
- Uterine sarcoma. A different type of cancer that develops in the uterine muscle wall (myometrium). It accounts for five percent of uterine cancer cases and spreads more quickly than endometrial cancer. There are many subtypes and they tend to spread through the bloodstream to the lungs.