Types of the Ovarian cancer
The ovarian cancers are grouped into two major groups according to the part of the ovary where they originate:
(a) Epithelial ovarian cancer
(b) Non epithelial ovarian cancers; which can be further divided into:-
Epithelial ovarian cancer arise from the cells that line or covers the ovaries. It is the most common type, which account for about 80-90% of ovarian cancer cases and commonly found in women of 40 years and above. Although it can affects younger women as well. Epithelial cancers are categories into subtypes by the cell type affected: It can be serous, endometrial, Brenner’s, Clear cell, mucinous, mixed and undifferentiated carcinomas
Again, due to the aggressiveness of the cells, the epithelial carcinomas are further divide in to grade,
Note:
The higher the grade, the higher the degree of abnormality and the faster the pace of growth and spread OR The lower the grade number, the better the prognosis
Non epithelial ovarian cancer arise from the portion of the ovary other than its Surface covering or lining (epithelium), usually from the germ cells and the stromal cells of the ovaries
Germ cells ovarian cancer originates from the cells that are destined to form eggs within the ovaries. It account for 5 to 10 % of the ovarian cancers and can occur in women of any age; however it tends to be found most often in their early 20s
Sex cord-stromal cells ovarian cancer begins in the connective tissue that hold the ovary together and those that produced the female sex hormones (estrogen and progesterone). This type of ovarian cancer is rare and only account for less than 5% of the ovarian cancer cases. The most common types are granulose cell tumours and leydig’s cells tumours.
(a) Epithelial ovarian cancer
(b) Non epithelial ovarian cancers; which can be further divided into:-
- Germ cell cancers
- Sex cord-stromal cell
Epithelial ovarian cancer arise from the cells that line or covers the ovaries. It is the most common type, which account for about 80-90% of ovarian cancer cases and commonly found in women of 40 years and above. Although it can affects younger women as well. Epithelial cancers are categories into subtypes by the cell type affected: It can be serous, endometrial, Brenner’s, Clear cell, mucinous, mixed and undifferentiated carcinomas
Again, due to the aggressiveness of the cells, the epithelial carcinomas are further divide in to grade,
- Grade 0: Tumour with low malignant potential
- Grade I: The cells are well differentiated
- Grade II: The cells are moderately differentiated
- Grade III: The cells are poorly differentiated
Note:
The higher the grade, the higher the degree of abnormality and the faster the pace of growth and spread OR The lower the grade number, the better the prognosis
Non epithelial ovarian cancer arise from the portion of the ovary other than its Surface covering or lining (epithelium), usually from the germ cells and the stromal cells of the ovaries
Germ cells ovarian cancer originates from the cells that are destined to form eggs within the ovaries. It account for 5 to 10 % of the ovarian cancers and can occur in women of any age; however it tends to be found most often in their early 20s
Sex cord-stromal cells ovarian cancer begins in the connective tissue that hold the ovary together and those that produced the female sex hormones (estrogen and progesterone). This type of ovarian cancer is rare and only account for less than 5% of the ovarian cancer cases. The most common types are granulose cell tumours and leydig’s cells tumours.
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(Copyright © 2011 by U. Bala)
(Copyright © 2011 by U. Bala)