Histopathology thyroid follicular adenoma microfollicular duration. Department of histopathology, bolton general hospital, bolton, uk. The rete testis, usually considered as a simple collector system collecting fluid from the testicular seminiferous tubules and moving it to the epididymis, is not immune to changes that may bring about differential diagnoses with different tumors. The activity of the cilia helps to move the spermatozoa along the tube, as they are immobile until they reach the epididymis. Can you identify the thick collagenous capsule on the outside called the tunica albuginea. Adenomatous hyperplasia of the rete testis ahrt is an uncommon benign lesion that preferentially involves the septal rete testisand mediastinal rete testis. The rete testis was studied in 71 orchidectomy specimens. It is the counterpart of the rete ovarii in females. Herein, we present a case of rete testis adenocarcinoma in a 36yearold chinese male. These pseudoneoplastic lesions can be divided into those that only macroscopically imitate neoplasia table 1 and those that.
Histopathology of adenocarcinoma of the rete testis. The diameter of the cauda epididymis and the concentration of sperm in the cauda will also. It is also near the arterial supply of the testis which comes from the testicular artery. Primary tumours of the rete testis, either benign or malignant, are very rare. Rete testis the rete testis connects the seminiferous tubules to the ductus efferentes. A case of adenocarcinoma of the rete testis accompanied by.
The gross and microscopic features of the normal adult, prepubertal, and aging testis are described. Pagetoid spread into the rete testis was seen in 14 of the 47 cases of germ cell tumour. Hukkanen, in comparative anatomy and histology second edition. This condition is more common in men over the age of 55 years. Many reports have been published concerning testicular histology in the. These pseudoneoplastic lesions can be divided into those that only macroscopically imitate neoplasia table 1 and those that microscopically imitate neoplasia. Tubular ectasia of rete testis radiology reference article. Its function is to provide a site for fluid reabsorption. The rete testis is an anastomotic network of ducts that is often a site of benign cystic change. In humans, the ducts of the rete testis are lined by cuboidal epithelium fig. Histological and histopathological evaluation of the testis. The various regions of the epididymis have different functions, morphology, and susceptibility for toxicity.
Bierich jr, giarola a eds proceedings of the serono symposia, vol 25. Media in category histopathology of adenocarcinoma of the rete testis the following 5 files are in this category, out of 5 total. Cooper tg 1986 the epididymis, sperm maturation and fertilisation. The germinal epithelium suddenly ends with begin of the rete testis, forming a kind of valve to prevent the backflow of spermatozoa. In peripheral area of the tumor, the remaining normal rete testis and. Their incidence among tumors arising within the scrotal sac varies according to different series from 6 to 30% 16, 32.
The rete testis is a network of tubules in the mediastinum testis that carry sperm from the seminiferous tubules to the efferent ducts. Occasionally afflicted by adenomatous hyperplasia of the rete testis. Histology of the testis, epididymis and spermatogenesis. Both ends of the seminiferous tubules join the rete testis. The biopsies were examined for histological uniformity within the same testis and between right and left testes. Sep 06, 2007 tubular ectasia of the rete testis secondary to obstruction and generally located in the mediastinum area of the testes fig. It is usually an incidental finding in surgical specimens from cryptorchidism and testicular tumour. The tumor was predominantly composed of irregular small tubules and papillary structures with cuboidal or polygonal cells. Male reproductive system introduction grading scheme should be used in documenting commonly occurring lesions in male reproductive tissues if treatmentrelated exacerbation of common background changes is suspected. This is a benign condition thought to result from the partial or complete obliteration of the efferent ducts. Thomas has conducted a study in nigeria and reported an incidence of 38% for obstructive azoospermia with normal histology. Pdf testis physiologyoverview and histology researchgate.
Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle. The rete testis is located in the mediastinum testis. Histological and histopathological evaluation of the. Butterworth, department of histopathology, bolton general hospital. Jun 24, 20 adenocarcinoma of the rete testis is very rare.
Histology of the epididymis and vas deferens the efferent ductules of the epididymis are lined by a columnar epithelium with cilia and microvilli. The anatomy, histology and development of the testis. Tubular ectasia of rete testis represents dilated testicular mediastinal tubules. T1 tumour limited to testis without lymphovascular invasion t1a tumour smaller than 3 cm in size t1b tumour 3 cm or larger in size t2 tumour limited to testis with lymphovascular invasion, or tumour invading hilar soft tissue or epididymis or penetrating visceral mesothelial layer covering the external surface of tunica albuginia with. Pdf histological description of the testis, epididymis. Welcome to the updated version of pathology for urologists. Histological and histopathological evaluation of the testis 1st edition by d. Numerous and frequentlyupdated resource results are available from this search. Neoplasia of the testis orchidectomy histopathology reporting guide not provided maximum tumour dimension select all that apply. Mar 16, 2020 rete testis is an anastomosing network of delicate channels located in the testicular hilum. Describe the cytology of the endocrine cells in the testis. Identify the genital glands and describe their histology. At testicular hilum complex tubular architecture may resemble teratoma connects testicular tubules to 12 15 ciliated efferent ducts, which merge into a single duct, the epididymis at its head rete lined by. Adenomatous hyperplasia of the rete testis alt low mag.
Overview of male reproductive pathology sage journals. Histology of testis by dr mohammad manzoor mashwani. Rete receives the luminal contents of seminiferous tubules and empties them into the efferent ductules. Normal spermatogenesis suggests obstruction of some part of the ductal system such as varicocele and obstruction of rete testes. Describe the blood testis barrier and the cell that forms it. Jul, 2010 the biopsies were examined for histological uniformity within the same testis and between right and left testes. The testes are two ovalshaped organs in the male reproductive system. This low power photograph of the testis shows its basic organisation. Histological description of the testis, epididymis and ductus deferens of the northern great grey kangaroo macropus giganteus giganteus article pdf available january 2014 with 1,828 reads. Emphasis is placed on these findings, which are important to the pathologist in interpretation of diagnostic biopsy specimens other than neoplasms. To the best of our knowledge this is the first report of a primary clear cell carcinoma of the rete testis. It is lined by ciliated cuboidal epithelial cells that also contain microvilli.
The testicular hilum is the predominant pathway for extratesticular extension of germ cell tumors, 1 and since 2011, the college of american pathologists and international society for urologic pathology isup have recommended routinely sampling it for histology. Aug 19, 2014 the anatomy, histology and development of the testis, epididymis and ductus deferens. T1 tumour limited to testis without lymphovascular invasion. Rete testis invasion is consistent with pathologic stage. Adenocarcinoma of the rete testis is an extremely rare. The seminiferous tubules start and end at the rete testis. Rete testis the tubule recti pass into the mediastinum testis and join a network of anastomosing channels, the rete testis. Ductus efferentes from the rete testis arise 1020 spirally wound efferent ductules ductuli efferentes which leave the testis and open into the duct of epididymis. Cystadenoma of the rete testis has been described in the urology and pathology literature.
However, formatting rules can vary widely between applications and fields of interest or study. Mar 16, 2020 webpathology is a free educational resource with 10312 high quality pathology images of benign and malignant neoplasms and related entities. Adenomatous hyperplasia of the rete testis abbreviated ahrt, also rete testis adenomatous hyperplasia, is a rare benign lesion of the rete testis that may be confused with malignancy. Rete testis adenocarcinoma is a well known but very rare neoplasm in humans. Media in category histopathology of rete testis the following 8 files are in this category, out of 8 total. This often occurs in association with adenomatous hyperplasia of the rete testis which is an uncommon, usually incidental finding. Microscopically the rete testis is composed of three parts. Histological evaluation of the human testisapproaches to. This barcode number lets you verify that youre getting exactly the right version or edition of a book. In humans the testes occur as a pair of ovalshaped organs. Histopathology of human testicular and epididymal tissue. The testicular biopsy was labeled mixed if more than one pattern was seen in the same biopsy from the same side and discordant if the right and left testicular biopsies showed different patterns. There is still little knowledge about its etiology and pathogenesis. More common with sometimes subtle intertubular pattern of seminoma.
Such lesions require careful scrutiny including immunohistochemical analysis to exclude malignant lesions such as mesothelioma or papillary serous carcinoma. Sex cordstromal tumors of the testis diagnostic histopathology. Rete testis of stromalinterstitial type not submitted not involved involved other margin involved. At testicular hilum complex tubular architecture may resemble teratoma connects testicular tubules to 12 15 ciliated efferent ducts, which merge into a single duct, the epididymis at its head. They are contained within the scrotal sac, which is located directly behind the penis and in. Increases risk of relapse in a univariate analysis. Profile a rete testis adenoma was diagnosed incidentally in a 6yearold quarter horse and an adenocarcinoma was reported in a 5yearold quarter horse cross. Histopathological patterns of testicular biopsy in male. Testicular tumors apart from those in the germ cell family are uncommon and are mostly sex cordstromal tumors and may pose a major diagnostic challenge. The rete testis is a dilated intratesticular structure located directly under the tunica albuginea at the cranial pole of the testis fig.
Describe the histology of the penis and the process of erection. To clarify the contribution of spontaneous or autolytic postmortem changes to testis histopathology, the testes of adult rats were examined after animals were left at room temperature for 12, 24. The testicular artery is convoluted and is surrounded by the venous pampiniform plexus for heat exchange. There are many lesions that can simulate a neoplasm in the testis or paratesticular structures. Mediastinum testis an overview sciencedirect topics. In rare instances, neoplasms such as benign cystadenoma and malignant cystadenocarcinoma occur in the rete testis. Well go over the different structures within each testis and. The anatomy, histology and development of the testis, epididymis and ductus deferens.
Pseudoneoplastic lesions of the testis and paratesticular. Acquired pathology of the rete testis springerlink. A brief overview of the histological features of the testis useful for all healthcare students. Webpathology is a free educational resource with 10312 high quality pathology images of benign and malignant neoplasms and related entities. Testicular histopathology in juvenile rat toxicity studies. Rete testis is an anastomosing network of delicate channels located in the testicular hilum. Male reproductive system introduction for normal histology. Rete testis invasion is consistent with pathologic stage t1. This book, the first to describe how the testis is evaluated in research and toxicology testing settings, is a resource for individuals who wish to perform a systematic evaluation of the testis. It can be found in autopsy specimens from patients dying with different chronic. Germ cells the germ cell types spermatogonia, spermatocytes, and spermatids are distinctive in ploidy, morphology, and susceptibility to harmful influences, including certain pharmaceutical compounds. Adenomatous hyperplasia of the rete testis libre pathology. Pagetoid spread into the rete testis by testicular tumours.
Neoplasia of the testis orchidectomy histopathology. Lara and others published testis physiology overview and histology find, read and cite all the. This program was designed to help urology residents and fellows familiarize themselves with the pathologic features of common urologic entities. Hedinger chr 1979 histopathology of the cryptorchid testis. These spermatozoacontaining cysts communicate with the tubular system into the epididymis. No fat to maintain temperature lower than rest of body contains. The rete is a potential site for compoundrelated findings. Qualitative and quantitative parameters of spermatogenic activity are presented in practical terms. May 15, 2007 histopathology testis sertoli cell tumor. Very rarely give rise to an adenocarcinoma of the rete testis. Both processes appear associated with underlying testicular atrophy and may be related to local hormonal imbalance. The book begins with a description of normal testis structure. The transitional tubules and the tubuli recti can be mistaken for atrophic seminiferous tubules see. Can you also identify the seminiferous tubules, which open into a network of anastomosing channels called the rete rete net testis at the mediastinum testes.