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a small pouch into which the semicircular canals open (同)utriculus

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/05/29 20:32:00」(JST)

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The prostatic utricle (Latin for "pouch of the prostate") is a small indentation located in the prostatic urethra, at the apex of the urethral crest, on the seminal colliculus (verumontanum), laterally flanked by openings of the ejaculatory ducts. It is also known as the vagina masculina or (in older literature) vesicula prostatica.^[1]

Structure

It is often described as "blind", meaning that it is a duct that does not lead to any other structures.^{[citation needed]}

It can sometimes be enlarged.^[2]^[3]

Dissection of prostate showing prostatic utricle opening into the prostatic urethra.

Function

The prostatic utricle might serve no function.^{[citation needed]} It is important primarily because it is the male homologue of the female uterus and vagina, usually described as derived from the Müllerian ducts,^[4] although this is occasionally disputed.^[5]

In 1905 Robert William Taylor stated the function of the utricle thusly: "In coitus it so contracts that it draws upon the openings of the ejaculatory ducts, and thus renders them so patulous that the semen readily passes through."^[6]

References

^ Henry Thompson (1883). "vesicula+prostatica"+utricle The diseases of the prostate. J&A Churchill.
^ Meisheri IV, Motiwale SS, Sawant VV (2000). "Surgical management of enlarged prostatic utricle". Pediatr. Surg. Int. 16 (3): 199–203. doi:10.1007/s003830050722. PMID 10786981.
^ Lopatina OA, Berry TT, Spottswood SE (2004). "Giant prostatic utricle (utriculus masculinis): diagnostic imaging and surgical implications". Pediatr Radiol 34 (2): 156–9. doi:10.1007/s00247-003-1048-9. PMID 12961046.
^ Kawashima, A.; Sandler, C. M.; Wasserman, N. F.; LeRoy, A. J.; King, B. F.; Goldman, S. M. (1 October 2004). "Imaging of Urethral Disease: A Pictorial Review". Radiographics 24 (suppl_1): S195–S216. doi:10.1148/rg.24si045504. Cite uses deprecated parameters (help); |accessdate= requires |url= (help)
^ Shapiro E, Huang H, McFadden DE, et al. (2004). "The prostatic utricle is not a Müllerian duct remnant: immunohistochemical evidence for a distinct urogenital sinus origin". J. Urol. 172 (4 Pt 2): 1753–6; discussion 1756. doi:10.1097/01.ju.0000140267.46772.7d. PMID 15371806.
^ R. W. Taylor. "A practical treatise on sexual disorders of the male and female". New York and Philadelphia, 1897; 3rd edition, 1905. P. 48

External links

Prostatic+utricle at eMedicine Dictionary
Anatomy photo:44:05-0204 at the SUNY Downstate Medical Center—"The Male Pelvis: The Prostate Gland"
pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (malebladder)
figures/chapter_34/34-3.HTM - Basic Human Anatomy at Dartmouth Medical School

UpToDate Contents

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1. 前立腺特異的抗原（PSA）の測定 measurement of prostate specific antigen
2. 前立腺癌のスクリーニング screening for prostate cancer
3. 前立腺生検の解釈 interpretation of prostate biopsy
4. 前立腺の前癌病変：病理および臨床的意義 precancerous lesions of the prostate pathology and clinical implications
5. 前立腺癌に対する局所療法に伴う血清PSAの上昇：診断評価 rising serum psa following local therapy for prostate cancer diagnostic evaluation

English Journal

Re: Male vagina is a more accurate term than prostatic utricle.

Kato H1.
International journal of urology : official journal of the Japanese Urological Association.Int J Urol.2016 Jun;23(6):530. doi: 10.1111/iju.13073. Epub 2016 Feb 28.
PMID 26923860

Re: Male vagina is a more accurate term than prostatic utricle.

Furuya S1, Hisasue SI2.
International journal of urology : official journal of the Japanese Urological Association.Int J Urol.2016 Apr 24. doi: 10.1111/iju.13103. [Epub ahead of print]
PMID 27109309

[8.5/11.5F transurethral seminal vesiculoscopy in the diagnosis and treatment of refractory hematospermia].

Zhu XB, Zhang XS, Zhang SL, Shi HL, Kong CH, Ding DG, Liu ZH.
Zhonghua nan ke xue = National journal of andrology.Zhonghua Nan Ke Xue.2016 Mar;22(3):225-8.
OBJECTIVE: To investigate the clinical application value of 8.5/11.5 F transurethral seminal vesiculoscopy in the diagnosis and treatment of refractory hematospermia.METHODS: We retrospectively analyzed 78 cases of refractory hematospermia diagnosed and treated by 8.5/11.5 F transurethral seminal ve
PMID 27172661

Japanese Journal

A myelodysplastic male patient presenting with difficult catheterization as a result of a prostatic utricle cyst

KONDO Atsuo,KAMIHIRA Osamu,MATSUURA Osamu
International journal of urology 16(12), 978-979, 2009-12-01
NAID 10027256099

Antenatally detected double prostatic utricle found in a neonate with ambiguous genitalia

MATSUMOTO Fumi,SHIMADA Kenji,MATSUI Futoshi,OBARA Takashi
Pediatric surgery international 25(3), 297-299, 2009-03-01
NAID 10029304797

症例ミュラー管遺残と精管,射精管との交通:症例報告および文献的考察

加藤晴朗,井川靖彦,西澤理 [他],Nishizawa Osamu
泌尿器科紀要 51(5), 339-342, 2005-05
14ヵ月男児.患者は繰り返す左精巣上体炎で入院となった.超音波検査では膀胱後部に円形の嚢胞性腫瘤を認め,排尿時膀胱造影では後部尿道と交通していた.更に内視鏡の結果では,嚢胞は精阜の中央に尿道との交通を認め,嚢胞壁の生検では扁平上皮と判明した.以上より,拡張した前立腺小子宮と診断し,左精管結紮術を施行した.拡張した前立腺小子宮に精管が開口することは,きわめて稀な病態であると考えられた
NAID 120002141440

「前立腺小室」

Prostatic utricle
	Vesiculae seminales and ampullæ of ductus deferentes, seen from the front.
	The male urethra laid open on its anterior (upper) surface.
Latin	Utriculus prostaticus,; utriculus masculinus,; vagina masculina,; sinus pocularis
Gray's	p.1234
Precursor	Müllerian duct

　　[★]

英: prostatic utricle
ラ: utriculus prostaticus
同: 男性子宮 uterus masculinus、男性膣男性腟 male vagina vagina masculina
関: 前立腺、精丘、尿道下裂

「prostatic」

　　[★]

adj.

前立腺の

関: prostate、prostate gland

[1] Henry Thompson (1883). "vesicula+prostatica"+utricle The diseases of the prostate. J&A Churchill.

[pmid10786981-2] Meisheri IV, Motiwale SS, Sawant VV (2000). "Surgical management of enlarged prostatic utricle". Pediatr. Surg. Int. 16 (3): 199–203. doi:10.1007/s003830050722. PMID 10786981.

[pmid12961046-3] Lopatina OA, Berry TT, Spottswood SE (2004). "Giant prostatic utricle (utriculus masculinis): diagnostic imaging and surgical implications". Pediatr Radiol 34 (2): 156–9. doi:10.1007/s00247-003-1048-9. PMID 12961046.

[4] Kawashima, A.; Sandler, C. M.; Wasserman, N. F.; LeRoy, A. J.; King, B. F.; Goldman, S. M. (1 October 2004). "Imaging of Urethral Disease: A Pictorial Review". Radiographics 24 (suppl_1): S195–S216. doi:10.1148/rg.24si045504. Cite uses deprecated parameters (help); |accessdate= requires |url= (help)

[pmid15371806-5] Shapiro E, Huang H, McFadden DE, et al. (2004). "The prostatic utricle is not a Müllerian duct remnant: immunohistochemical evidence for a distinct urogenital sinus origin". J. Urol. 172 (4 Pt 2): 1753–6; discussion 1756. doi:10.1097/01.ju.0000140267.46772.7d. PMID 15371806.

[6] R. W. Taylor. "A practical treatise on sexual disorders of the male and female". New York and Philadelphia, 1897; 3rd edition, 1905. P. 48

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prostatic utricle