Diagram of a cross-section of a testicle. 1. Cavity of tunica vaginalis, 2. Visceral lamina, 3. Parietal lamina.
The right testis, exposed by laying open the tunica vaginalis. (Tunica vaginalis is labeled at upper right.)
Details
Identifiers
Latin
tunica vaginalis testis
Anatomical terminology
[edit on Wikidata]
The tunica vaginalis is the pouch of serous membrane that covers the testes. It is derived from the vaginal process of the peritoneum, which in the fetus precedes the descent of the testes from the abdomen into the scrotum.[citation needed]
After its descent, that portion of the pouch which extends from the abdominal inguinal ring to near the upper part of the gland becomes obliterated; the lower portion remains as a shut sac, which invests the surface of each testis, and is reflected on to the internal surface of the scrotum; hence it may be described as consisting of a visceral and a parietal lamina.[citation needed]
Contents
1Visceral lamina
2Parietal lamina
3Cavum vaginale
4Diseases
5References
6External links
Visceral lamina
The visceral lamina (lamina visceralis) covers the greater part of the testis and epididymis, connecting the latter to the testis by means of a distinct fold. From the posterior border of the gland it is reflected on to the internal surface of the scrotum.[citation needed]
Parietal lamina
The parietal lamina (lamina parietalis) is far more extensive than the visceral, extending upward for some distance in front and on the medial side of the cord, and reaching below the testis. The inner surface of the tunica vaginalis is smooth, and covered by a layer of simple squamous mesothelial cells. The interval between the visceral and parietal laminæ constitutes the cavity of the tunica vaginalis.[citation needed]
Cavum vaginale
Schematic drawing of a cross-section through the vaginal process. 1 testicle, 2 Epididymis, 3 Mesorchium, 4 Lamina visceralis of Tunica vaginalis, 5 Lamina parietalis of Tunica vaginalis, 6 Cavum vaginale, 7 Epididymis, 8 Fascia spermatica interna
The cavum vaginale is the cavity of the tunica vaginalis. The testicle hangs suspended in a space, the cavum vaginale, from which is separated by the visceral layer of the tunica vaginalis. The latter is continued on to the epididymis, at the lateral margins of which it is reflected forward as the parietal layer, and as this is more extensive than the visceral layer, the cavum vaginale-named cavity results. The testicle is enclosed in a thick capsule of fibrous tissue, the tunica albuginea. The tunica albuginea sends prolongations inwards, dividing the testicle into lobules. Each lobule contains the seminiferous tubules, extending from the base where they end blindly, towards the apex.[1]
Diseases
Mesothelioma
Hydrocele[2]
Cartilaginous Bodies[3]
Hematocele[4]
References
This article incorporates text in the public domain from page 1242 of the 20th edition of Gray's Anatomy (1918)This article incorporates text from Spermatocele, by Edward T. Crossan, M.D., a publication from 1920 now in the public domain in the United States.
^DocCheck Medical Services GmbH. "Cavum vaginale". DocCheck Flexikon.
^Hydrocele in Emergency Medicine at eMedicine
^Paget, J (1855). "Account of a Growth of Cartilage in a Testicle and its Lymphatics, and in other parts". Medico-Chirurgical Transactions. 38: 247–260.9. PMC 2104299. PMID 20896046.
3. 悪性胸膜中皮腫の初期マネージメント initial management of malignant pleural mesothelioma
English Journal
Improving the accuracy of mesothelioma diagnosis in China.
Guo Z1, Carbone M2, Zhang X3, Su D4, Sun W1, Lou J3, Gao Z5, Shao D6, Chen J3, Zhang G1, Hu J1, Chen K4, Wang F7, Pass HI8, Yu H9, Napolitano A10, Yang H10, Mao W11.
Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer.J Thorac Oncol.2016 Dec 19. pii: S1556-0864(16)33574-2. doi: 10.1016/j.jtho.2016.12.006. [Epub ahead of print]
BACKGROUND: In the Western World malignant mesothelioma (MM) is most prevalent in the pleura of older males professionally exposed to asbestos. Information about MM from rapidly industrializing countries, such as China, is minimal. There is concern that a proportion of MM diagnoses in China may be i
Malignant mesothelioma of the tunica vaginalis: a rare case report and description of multimodal treatment.
Andresen ED1, Henning G, Uhlman MA, Gupta A.
The Canadian journal of urology.Can J Urol.2016 Dec;23(6):8585-8589.
Malignant mesothelioma is an uncommon neoplasm that develops from serous surfaces, and rarely from the tunica vaginalis. Although atypical in any location, paratesticular presentation is exceedingly infrequent as only 0.3% to 1.4% of mesothelioma cases arise from the tunica vaginalis. Fewer than 300
Geographic distribution of incidence of pericardial and paratesticular mesotheliomas in the USA.
Lowry SJ1, Weiss NS2.
Cancer causes & control : CCC.Cancer Causes Control.2016 Dec;27(12):1487-1489. Epub 2016 Nov 3.
PURPOSE: Exposure to asbestos is thought to cause the large majority of pleural mesotheliomas in the USA. It is unknown whether asbestos exposure plays a role in the etiology of rarer forms of mesothelioma, e.g., those located in the pericardium or in the tunica vaginalis of the testis. In order to
… Malignant mesothelioma of the tunicavaginalis is rare, and is usually not diagnosed until surgery is undertaken. … We report here a case in a 62-year-old man with malignant mesothelioma tunicavaginalis testis. … There is a thickening of mesothelia of the tunicavaginalis with left sided hydrocele by ultrasonography and computed tomography scan. …
Perineal Hernia Repair Using an Autologous TunicaVaginalis Communis in Nine Intact Male Dogs
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Journal of Veterinary Medical Science 75(3), 337-341, 2013
… Aim of this clinical trial was to assess the possible use of the autologous tunicavaginalis communis as a free graft for perineal hernia repair in intact male dogs. … In conclusion, the tunicavaginalis autograft can be used for perineal herniorrhaphy in intact male dogs. …
Definition of Tunica vaginalis in the Medical Dictionary. Tunica vaginalis explanation. Information about Tunica vaginalis in Free online English dictionary. What is Tunica vaginalis? Meaning of Tunica vaginalis medical term. What ...
The tunica vaginalis is the serous covering of the testis. It is a pouch of serous membrane, derived from the processus vaginalis of the peritoneum, which in the fetus preceded the descent of the testis from the abdomen into the scrotum