Fossa navicularis

Dr Henry Knipe and Dr Matt A. Morgan et al.

The fossa navicularis refers to a normal mild dilatation of the urethra. It occurs at the most distal/downstream portion of the urethra.

It is more evident in males, where it occurs in the penile/pendulous urethra, near the urethral meatus. There is also a fossa navicularis in women: the more flexible segment of the urethra between the rigid incisura intermuscularis and the collagenous meatus.

The fossa navicularis is where the balloon is positioned during a retrograde / ascending urethrogram (RUG/ASU).

Anatomy: abdominopelvic
Share article

Article information

rID: 40902
System: Urogenital
Section: Anatomy
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.