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).

Abdominal and pelvic anatomy
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Article information

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

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