Cowper's duct cysts

T1 sagittal

T2 axial

T2 coronal

T2 sagittal

30 year old presented with dysuria and occassional hematuria.

MRI of the pelvis demonstrated:

- a well defined hyperintense cystic lesion on T1 and T2
- Lesion lies in the midline in close approximation to the bulbous urethra and just below the prostate.


Diagnosis: Cowper's duct cyst.

Cowper's duct cyst:

• Cowpers glands - found in the urogenital diaphragm below the prostate

• Drains into the bulbar urethra

• Obstruction results in retention cysts

• Cowper's gland cysts are probably secondary to trauma or infection

• Large cysts can cause urinary obstruction, hematuria or infertility.

• Treated by marsupialisation or endoscopic incision.

References:

http://www.ajronline.org/doi/full/10.2214/AJR.06.0759
http://link.springer.com/article/10.1007%2Fs00247-001-0580-8