PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Rete Testis”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 145 records · Page 8Linked to original sources
PubMed1985

Studies on the participation of tunica albuginea and rete testis (TA and RT) in the quantitative structure of human testis.

In 309 testes, the % proportion of the tunica albuginea (TA) and rete testis (RT) was determined in the quantitative composition of the testis. The weight of the testis ranged widely from 3.0 to 34.5 g, mean weight 14.67 +/- 6.0 g, with a statistically non-significant difference in favour of the right testis (15.3 +/- 6.32 g). The mean weight of the testes decreased with age, being 16.77 g in young men, 14.98 g in middle-aged men, and 13.6 g in old men. The absolute weight of TA and RT ranged from 1.0 to 12.0 g, being on the average 3.57 +/- 1.42 g. Similarly as the mean weight of the testis, that of TA and RT was not significantly different between the right and left testis, and between various age groups. On the other hand, a significant rise was observed in the % proportion of the mass of TA and RT in the total mass of the testis in various age groups. In young men, this proportion was 20.36%, in middle-aged men 24.28%, and in old men 28.83%. Statistically significant differences appeared between the mean values in the youngest and oldest age groups and the oldest and middle age groups. In the whole material, the % proportion of TA and RT in the quantitative composition of the testis ranged from 13.6 to 75.0%, being 25.7 +/- 8.1% on the average. Identical results were obtained by 2 different methods in men dying between 17 and 91 a of age, and the mean age of them was 58.2 a.

Adolescent↗
PubMed1991

[Adenocarcinoma of the rete testis. Review of the literature apropos of a new case].

The authors report the case of a 66 year old man with a Boden stage I adenocarcinoma of the rete testis treated by orchiectomy and adjuvant chemotherapy. Lung metastases developed 46 months later and were responsible for death despite further chemotherapy. Adenocarcinoma of the rete testis is an exceptional tumour, as only 23 cases satisfying the criteria defined by Feek and Hunter have been reported in the literature. The prognosis is poor even in the apparently localized forms (5 year survival less than 25%) and local recurrences and lung and/or hepatic metastases are frequent. Radiotherapy and chemotherapy appear to have little value.

Aged↗
PubMedDate not supplied

Electrolyte composition of rete testis fluid and cauda epididymal plasma and spermatozoa from rats following gossypol treatment.

This investigation was undertaken to study the potassium and sodium concentrations in rete testis fluid and cauda epididymal plasma and spermatozoa following gossypol treatment. Rats were treated orally with gossypol acetic acid at a dose of 15 mg/kg/day for 3 and 6 weeks respectively. There were not abnormal findings in the ionic concentrations of cauda epididymal plasma following 3 or 6-week-treatment. After 6 but not 3 weeks the spermatozoa in the cauda epididymidis were rendered almost completely immotile and malformed with a significant reduction in their potassium concentration and rise in their sodium concentration. No abnormal findings in the morphological picture of the germinal epithelium were observed under such circumstances and fluid and sperm from the rete testis were normal. Therefore, a direct action of gossypol may be exerted locally on the spermatozoa in the epididymis.

Animals↗
PubMed1992

Cystic testicular mass caused by dilated rete testis: sonographic findings in 31 cases.

We reviewed the scrotal sonograms of 31 patients who had a testicular mass consisting of multiple small spherical or tubular anechoic structures in the region of the mediastinum testis. The median age of the patients was 62 years (range, 31-76 years). The abnormality was unilateral in 22 patients and bilateral in nine. Thirty-four (85%) of the 40 involved testicles had coexisting epididymal abnormalities: 32 with epididymal cysts and two with epididymitis. Follow-up sonograms were available in five patients and showed no change up to 4.5 years after the initial diagnosis. Surgical and histologic findings were available in one other patient and showed dilatation of the rete testis. The sonographic appearance and location of the lesions, the frequent presence of an epididymal abnormality, and the surgical and histologic findings in one case suggest that the lesion is due to dilatation of the rete testis, probably associated with obstruction in the epididymis. Recognition of this entity on sonograms may prevent unnecessary orchiectomy.

Adult↗
PubMedDate not supplied

Cystic dysplasia of the rete testis: report of two cases and review of the literature.

Cystic dysplasia of the rete testis (CDT) is a rare congenital defect, characterized by multiple irregular cystic spaces in the mediastinum of the testis that may involve the whole gonad. A review of the literature has shown 32 reported cases, the majority of which were associated with ipsilateral renal malformations (agenesis/cystic dysplasia). Pathogenesis may be attributed to an early insult involving mesonephric duct development. Although treatment is surgical, when feasible, a conservative or nonoperative approach is suggested. Here we report two cases, one in a 3-year-old boy and one in a 10-day-old newborn. Concomitant cystic dysplasia of ipsilateral kidney was present in the former patient, while CDT was the solitary finding in the latter patient. Orchiectomy was performed in both patients, for extensive gonad involvement in the older boy and for suspected gonad torsion in the newborn patient.

Abnormalities, Multiple↗
PubMed1998

A scanning electron microscopic study of the rete testis of the guinea pig.

Scanning electron microscopic (SEM) observations of the structure of the rete testis (RT) of guinea pigs preceded by and complemented with stereomicroscopy and light-microscopic studies showed that the RT of this species is predominantly cavitary. An axial and labyrinth-like morphological pattern was also observed in the RT complex, with partially interconnected chambers and epithelium-lined channels accompanying a connective axis observed in the middle portion of the cranial end of the testis. Characteristics of the chordaeretis and bullaeretis were also visualized in the guinea pig RT and the results are discussed in terms of the morphological patterns observed in the RT of other mammals and of man.

Animals↗
PubMed1979

Inhibin activity in ram rete testis fluid: depression of plasma FSH and LH in the castrated and cryptorchid ram.

Ram "rete testis" fluid (RTF) routinely collected throughout the year has been used as a source of inhibin. The mean flow rate and mean concentration of spermatozoa in the fluid remained constant during the first 12 days of cannulation. More than 50 castrated or cryptorchid rams have been treated with low doses of steroid-free RTF over a 25-h blood sampling period. Human serum albumin was injected as a control. RTF depressed both FSH and LH plasma levels although the pattern was different for each hormone. There was no change in prolactin secretion. LH secretion was affected first while FSH remained unchanged in castrated and in cryptorchid rams. Thereafter, the maximum depression of FSH plasma levels occurred at a time when LH started to return or had returned to preinjection levels in the cryptorchid and castrated animals respectively. In the cryptorchid rams, RTF suppressed pulsatile LH secretion which was present before treatment but in the castrated animals, RTF lowered LH plasma levels which were constant and showed no pulsatile changes before treatment. Both FSH and LH inhibitory activities have been found in all active fractions obtained by purification of RTF. These activities are papain-sensitive and active fractions have a high apparent molecular weight (greater than or equal to 100 000) as shown by gel filtration and ultrafiltration. These and other results in the literature have lead to a re-definition of inhibin as a protein factor of gonadal origin able to depress plasma levels of FSH and LH, even at low doses.

Animals↗
PubMed1982

Ectasia of the rete testis with ipsilateral renal agenesis.

Scrotal masses are a common problem in children. Cystic lesions usually are found to be hydroceles, while solid masses suggest the possibility of neoplasia. A rare cause of a cystic scrotal mass is ectasia of the rete testis. A review of the literature reveals only 1 case similar to the patient herein described. Both patients had agenesis of the ipsilateral kidney, which explained on the basis of the embryologic overlapping of the genitourinary system. Our patient bears clinical similarity to the ACI rat and correlation is made with this animal model system. Excision of the multiloculated rete testis cyst, rather than orchiectomy, appears to be curative.

Child↗
PubMed1987

Rete testis fluid (RTF) proteins: purification and characterization of RTF albumin.

A major 68-kDa protein in ram rete testis fluid (RTF) is shown to be chemically and immunologically indistinguishable from albumin in ovine serum. Data obtained with two-dimensional gel electrophoresis of RTF demonstrate the presence of additional proteins with a molecular mass of 68 kDa that do not react with antisera against sheep serum albumin. Biochemical characteristics of albumin preparations isolated by immunoaffinity chromatography from ovine serum and from RTF were compared. Albumin from both sources had the same apparent molecular mass of 68 kDa, the same isoelectric point of approximately 4.2, and neither bound specifically to Concanavalin A. Analysis of tryptic peptide maps, obtained with reverse-phase high-pressure liquid chromatography, indicated no significant differences between digests of the two purified albumin preparations. Results indicate that RTF albumin and serum albumin are the same protein, which implies that RTF albumin may originate from serum. Albumin levels in RTF, collected from different rams and measured by radioimmunoassay, varied between 46 and 164 micrograms/ml, constituting between 11 and 17% of total RTF protein, while albumin levels in sheep plasma were 40,000 micrograms/ml. The protein composition of RTF is discussed in relation to the relative amounts of various components contributed by testis cells and the amounts derived from serum.

Albumins↗
PubMed1996

[Cystic ectasia of the rete testis: apropos of a case].

We report a case of a simple testicular cyst developing on the rete testis. Nine cases have been reported in children. In our patient, the cyst was associated with aplasia of the homolateral kidney and termination of the left ureter in the left deferens. According to the literature, the diagnosis is usually fortuitous at histology examination. The cause is probably embryonic malformation. Castration is the therapeutic solution. In our case, simple enucleation allowed preservation of the deferens since the controlateral tree was damaged. There have been no complications with a 6-year follow-up.

Cysts↗
PubMed1994

Tubular ectasia of the rete testis: a benign condition with a sonographic appearance that may be misinterpreted as malignant.

Tubular ectasia of the rete testis is a recently recognized entity whose sonographic appearance has been described principally in the radiological literature. The sonographic features of this benign process must be appreciated by urologists as well so that is not mistaken for malignancy. We report 3 cases showing the spectrum of this process and review the literature.

Adult↗
PubMedDate not supplied

Structure of rete testis, vas efferens, epididymis and vas deferens of langur monkey (Presbytis entellus entellus Dufresne).

Morphological and histological features of rete testis, vas efferens, epididymis and vas deferens were studied in the langur monkey. Tubular extensions of rete were located towards lateral side of the testis. Its epithelium comprises mostly of cuboidal cells with hyaline cytoplasm. Three to nine bundles of vas efferens, emerging below the cranial pole of the testis, were observed. Vas efferens epithelium comprises of ciliated and nonciliated cells. Epididymis could be divided into six zones on the basis of cytological features. Principal cells, basal cells, apical cells and intraepithelial lymphocytes were observed in the epididymal epithelium, but their number, shape, size and location of nuclei varied in different zones. Vas deferens epithelium comprises of principal cells, basal cells, apical cells and few intraepithelial lymphocytes. Epithelium is surrounded by lamina propria, longitudinal, circular and longitudinal muscle layers.

Animals↗
PubMed1997

Rete testis dysgenesis. A characteristic lesion of undescended testes.

OBJECTIVE: To evaluate the status of the intratesticular spermatic duct system (rete testis, RT) in patients with cryptorchidism. MATERIALS AND METHODS: We examined 40 surgical orchiectomy specimens from postpubertal patients with undescended testis from pathology files at La Paz Hospital, Madrid, Spain. Special attention was given to the intratesticular spermatic duct system, mainly the RT. RESULTS: In all cases, the RT was underdeveloped and was lined by columnar or large cuboidal cells (dysgenetic RT). According to the configuration of the mediastinal RT, the lesions were classified as diffuse hypoplastic RT (37.5%), hypoplastic-cystic RT (50%), or adenomatous pseudohyperplastic RT (12.5%). CONCLUSION: Although these changes could have resulted from incomplete pubertal maturation, many other data suggest that a primary abnormality of the RT is present. Important clinical considerations are derived from the fact that a functional obstruction of the sperm-conducting mechanism is determined by these abnormalities of the RT. The presence of intraluminal spermatozoa in epididymis and RT suggest that at least some of these patients are potentially fertile.

Adolescent↗
PubMed1999

[Cystic dysplasia of the rete testis and ipsilateral kidney agenesis in children].

BACKGROUND: Cystic dysplasia of rete testis, a rare abnormality, is often associated with renal agenesis. CASE REPORT: A 5-year-old boy was examined because he presented large scrotum. This was initially considered as hydrocele. Surgery showed a cystic dysplasia of the testis that in this patient was associated with ipsilateral renal agenesis. CONCLUSION: This congenital abnormality, explained on the basis of embryological development, has been reported in 15 children. The testis appears cystic at surgical exploration; echography can affirm diagnosis and MRI can give specific features. A conservative attitude is proposed as this lesion is benign. Long-term follow-up is recommended for possible painful effects or growth of the lesion.

Child, Preschool↗