Paratubal cyst

Paraovarian cysts are epithelium-lined fluid-filled cysts in the adnexa adjacent to the fallopian tube and ovary. The terms are used interchangeably. Paraovarian cysts are epithelium-lined fluid-filled cysts in the adnexa adjacent to the fallopian tube and ovary. The terms are used interchangeably. PTCs originate from the mesothelium and are presumed to be remnants of the Müllerian duct and Wolffian duct. Most cysts are small and asymptomatic. Typical sizes reported are 1 to 8 cm in diameter. PTCs may be found at surgery or during an imaging examination that is performed for another reason. Larger lesions may reach 20 or more cm in diameter and become symptomatic exerting pressure and pain symptoms in the lower abdomen. Large cysts can lead to torsion of the adnexa inflicting acute pain. Prior to surgery, PTCs are usually seen on ultrasonography. However, because of the proximity of the ovary that may display follicle cysts, it may be a challenge to identify a cyst as paratubal or paraovarian. PTCs are generally benign, but may, on rare occasions, give rise to borderline tumors and malignancies.