Struma ovarii is a type of teratoma, a noncancerous tumour in the ovary. The term teratoma is used to describe a tumour made up of germ cells – specialized cells in the ovary that have the potential to form many different types of tissue. While most teratomas contain a mixture of tissues, such as hair, …
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What is mucinous cystadenofibroma? A mucinous cystadenofibroma is a non-cancerous type of ovarian tumour. While these tumours are non-cancerous, they can grow to be very large in size and can cause significant symptoms for many patients. How do pathologists make this diagnosis? For most women, the diagnosis of mucinous cystadenofibroma is only made when the …
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An immature teratoma is a rare type of ovarian tumour that contains both mature tissues, such as skin or fat, and immature tissues, typically composed of developing nerve cells. The word immature is used because some of the tissues inside the tumour look similar to embryonic or early developmental tissue under the microscope. Unlike mature …
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What is clear cell carcinoma of the ovary? Clear cell carcinoma is a type of ovarian cancer. Most clear cell carcinomas are associated with a condition called endometriosis. Endometriosis is the presence of endometrial tissue (which is normally found in the uterus) outside of the uterus and the ovary is a common location to find …
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Mucinous carcinoma of the ovary is a type of ovarian cancer that develops from cells that produce mucus. Under the microscope, the tumour cells resemble the cells that line parts of the digestive tract, such as the stomach or intestines. Because of this appearance, pathologists describe the tumour as having “mucinous” or gastrointestinal-type features. This …
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Low-grade serous carcinoma of the ovary is a type of ovarian cancer that develops from cells similar to those lining the fallopian tube. It is called “low grade” because the tumour cells look less abnormal under the microscope and tend to grow more slowly than those seen in high-grade serous carcinoma. Low-grade serous carcinoma is …
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High-grade serous carcinoma of the ovary is the most common type of ovarian cancer. It develops from epithelial cells that resemble the cells lining the fallopian tube. This tumour accounts for about 70% of ovarian carcinomas. Many cases are diagnosed after the cancer has already spread within the abdomen. For this reason, high-grade serous carcinoma …
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Endometrioid carcinoma of the ovary is a type of ovarian cancer that resembles endometrioid carcinoma of the uterus when examined under the microscope. It develops from epithelial cells that line the ovary. This tumour accounts for about 10% of ovarian carcinomas. Many cases are diagnosed at an early stage and are confined to the ovary …
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What is a serous borderline tumour? Serous borderline tumour is a non-cancerous type of ovarian tumour. Although it is considered non-cancerous, the tumour cells can spread to other organs within the abdomen and pelvis. Is a serous borderline tumour of the ovary a type of cancer? No. Serous borderline tumour is not a type of …
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What is a serous cystadenoma? A serous cystadenoma is a very common non-cancerous type of ovarian tumour. It develops from the cells on the surface of the ovary. While these tumours are non-cancerous, they can grow to be very large in size and as a result, can cause significant symptoms for many patients. What are …
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