How the ovarian cancer is developing? What are the types of ovarian cancer? Read in this article.
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cancer of ovarian
The name of most tumors comes from that part of the body (organ), from which a tumor appeared first. Ovarian cancer develops women from ovaries. In women - two ovary, located on both sides of the pelvis. Ovaries produce eggs and female hormones - estrogen and progesterone.
The ovaries contain three types of fabrics:
Gender cells, Which produce egg cells.
Stromal cells, Most of the female hormones (estrogen and progesterone).
Epithelial cells, Which cover the ovary. Most ovarian tumors develop precisely from epithelial cells.
In the ovaries can develop a variety of tumors. Some of them are benign and never go beyond their limits. Women with such tumors are successfully treated by removing one ovarian or its parts along with tumor education. Other tumors are malignant and can spread throughout the body. Treatment of such patients complex combined using various methods.
Three main types of ovarian tumors are distinguished: epithelial, germinative and melting and stromal.
Epithelial egg tumors
Epithelial tumors can be divided into three subgroups:
Benign epithelial tumors that are not metastasized and usually treatable.
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Low Malignan Tumors.They are not purely malignant, but are referred to as border. These tumors are found in younger women. They grow slowly and less dangerous than cancer. -
Epithelial egg tumors. This type of tumor is 85% of all ovarian tumors. Microscopic examination makes it possible to classify these diseases in more detail. -
Primary peritoneal carcinoma. This tumor resembles the epithelial cancer of the ovaries, but occurs outside the ovaries. It grows from cells, lining the pelvis and abdominal cavity. These cells resemble cells on the surface of the ovaries. In women who have undergone operation to remove both ovaries, it is possible to develop such a type of cancer.
Gerination tumors
Most tumors of this group do not relate to malignant, although a certain number is classified as malignant. There are several subtypes of germinative tumors: teratomas, dysgamine (malignant ovarian tumor, originating from immature embryonic cells) and yolk bag tumors.
Stromal tumors
Stromal tumors can be both benign and malignant. More than half of such tumors are diagnosed in women older than 50 years.
Cysts ovarian
Cyst is a cluster of fluid inside the ovary. Most often, the liquid is absorbed and the cyst disappears independently without treatment. However, if the cyst of large sizes has arisen in a child or after menopause, you may be offered an additional examination and a certain type of treatment.
Frequency of occasion of cancer of ovarian
In 2002, 12116 ovarian cancer were diagnosed in Russia. At the same time, the prevalent (III-IV) stages were 64.2%. The incidence of ovarian cancer is 15.9 per 100 thousand. female population. For the period from 1993 to 2002, the increase in incidence in the group of women under the age of 29.
Ovarian cancer ranks fifth in frequency among all tumors in adult women. It is observed approximately one of 55 women and is a more common cause of death than other types of genital cancer. In addition, this tumor ranks fifth as a cause of death among women. In 2004, 25580 new ovarian cancer will be diagnosed in the United States. At the same time, 16090 women may die of this disease. However, since 1991, the number of cases of ovarian cancer decreases.
