by Jason Wasserman MD PhD FRCPC
September 25, 2023

What is a paratubal cyst?

A paratubal cyst is a noncancerous fluid-filled space that develops between the ovary and the fallopian tube. It is a common condition that more often affects children and young women.

What are the symptoms of a paratubal cyst?

Most paratubal cysts do not cause any symptoms and the cyst is discovered incidentally when imaging of the pelvis is performed for another reason. Large cysts, however, may cause symptoms such as pelvic pain and pressure.

What causes a paratubal cyst?

What causes a paratubal cyst to develop is not completely understood, however, in some cases, it may arise from remnants of the Mullerian duct.

How is this diagnosis made?

The diagnosis may be suggested after imaging studies performed show a mass or cyst involving the fallopian tube. However, a definitive diagnosis cannot be made until the cyst is removed and tissue is examined under the microscope by a pathologist.

What does a paratubal cyst look like under the microscope?

When examined under the microscope, a paratubal cyst looks like a large open space fluid-filled space called a cyst. The space is surrounded by a thin wall of tissue lined by cuboidal-shaped or ciliated epithelial cells (cells with small hair-like projections).

Can a cancer develop in a paratubal cyst?

Yes, although it is very rare.