Seminal colliculus

Seminal colliculus
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Vesiculæ seminales and ampullæ of ductus deferentes, seen from the front.
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The male urethra laid open on its anterior (upper) surface.
Latin colliculus seminalis
Gray's subject #256 1234

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:

Pathology

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]

References

  1. ^ "Posterior Urethral Valve. Emedicine, Radiology.". eMedicine. July 18, 2010. http://emedicine.medscape.com/article/412226. 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.

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