Fossa navicularis (urethra)
Citation, DOI, disclosures and article data
At the time the article was created Matt A. Morgan had no recorded disclosures.View Matt A. Morgan's current disclosures
At the time the article was last revised Francis Deng had no recorded disclosures.View Francis Deng's current disclosures
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).
This fossa navicularis of the urethra should not be confused for the bony defect in the clivus of the same name: fossa navicularis.
- 1. Pollack HM, McClennan BL, Dyer RB et-al. Clinical urography. Saunders. ISBN:0721669352. Read it at Google Books - Find it at Amazon