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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: * the orifices of the prostatic utricle * the slit-like openings of the ejaculatory ducts. * the openings of the prostatic ducts ==Posterior urethral valves== 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. Urethral carcinoid tumors have been reported at the verumontanum.〔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〕 The structure tends to migrate caudally, or downward, in hypospadia disorders and is then seen in the bulbous, or penile portion of the urethra.〔F Ikoma, H Shima. 1991. Caudal migration of the verumontanum. Journal of Pediatric Surgery. 26: 7, 858-861.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「seminal colliculus」の詳細全文を読む スポンサード リンク
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