Seminal colliculus

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Seminal colliculus
Prostate - Gray1153.png
Seminal vesicle and ampullae of ductus deferentes, seen from the front.
Gray1142.png
The male urethra laid open on its anterior (upper) surface.
Details
Latin Colliculus seminalis,
verumontanum
Identifiers
Gray's p.1234
Dorlands
/Elsevier
12265795
TA A09.4.02.008
FMA 74363
Anatomical terminology

The seminal colliculus (Latin colliculus seminalis), or verumontanum, of the prostatic urethra is a landmark near the entrance of the seminal vesicles. Verumontanum is translated from Latin to mean 'mountain ridge', a reference to the distinctive median elevation of urothelium that characterizes the landmark on magnified views. Embryologically, it is derived from the uterovaginal primordium. The landmark is important in classification of several urethral developmental disorders. The margins of seminal colliculus are the following:

Dissection of prostate showing the prostatic urethra with the seminal colliculus on the posterior wall.

Posterior urethral valves[edit]

The verumontanum is an important anatomic landmark for pathology in a congenital anomaly known as posterior urethral valves, in which there is a developmental obstruction of the urethra in newborn male infants.[1] Urethral carcinoid tumors have been reported at the verumontanum.[2] The structure tends to migrate caudally, or downward, in hypospadia disorders and is then seen in the bulbous, or penile portion of the urethra.[3]

Prostatic utricle[edit]

The prostatic utricle, a remnant of the paramesonephric duct, arises from the urethra at the level of the verumontanum and projects posteriorly. This blind ending structure can be associated with hypospadias. This is distinct from a Cowper duct syringocele, which arises at the bulbous urethra.

References[edit]

  1. ^ "Posterior Urethral Valve. Emedicine, Radiology.". eMedicine. July 18, 2010. Retrieved July 18, 2010. 
  2. ^ Maxwell Smith , M Scott Lucia , Priya N Werahera and Francisco G La Rosa Carcinoid tumor of the verumontanum (colliculus seminalis) of the prostatic urethra with a coexisting prostatic adenocarcinoma: a case report Journal of Medical Case Reports 2010, 4:16
  3. ^ F Ikoma, H Shima. 1991. Caudal migration of the verumontanum. Journal of Pediatric Surgery. 26: 7, 858-861.

External links[edit]