Search

In this study, natural zeolite with maximum adsorption capacity of 3.59 mg g−1 was used for the simultaneous removal of ammonium nitrogen (NH4+-N), dissolved chemical oxygen demand (d-COD) and color from raw sanitary landfill leachate (SLL). Saturation, desorption and regeneration tests of zeolite were performed. Optimum adsorption conditions were found for particle size 0.930 µm, stirring rate of 1.18 m s−1, zeolite dosage of 133 g L−1 and pH 8. NH4+-N removal efficiency reached 51.63 ± 0.80% within 2.5 min of contact. NH4+-N adsorption follows mostly the linear pseudo-second order model, with intra-particle diffusion. NH4+-N desorption follows the linear pseudo-second order model. Adsorption data fitted to the Temkin Isotherm in linear and nonlinear forms. Saturation tests showed that zeolite can be efficiently used in three successive adsorption cycles. NH4+-N release from the saturated zeolite was not completely reversible, suggesting that the zeolite may be used as slow ΝΗ4+-Ν releasing fertilizer and an attractive low cost material for the treatment of SLL. NH4+-N removal with the regenerated zeolite exceeded 40% of the initial concentration in the fluid within 2.5 min. SEM analysis showed significant changes through saturation and regeneration. XPS revealed that adsorption of ΝΗ4+-Ν to the zeolite was accompanied by ion exchange.

A 70-year-old man presented with fever, left flank pain and scrotal enlargement. CT scan of the thorax and abdomen revealed findings compatible with pulmonary and kidney tuberculous involvement. Sonographic and MRI examination of the scrotum showed bilateral testicular enlargement and the presence of multiple nodules involving both the testis and the epididymis. Urine cultures obtained from a percutaneous left nephrostomy were positive for tuberculous bacilli, and the patient was placed on anti-tuberculous treatment.

INTRODUCTION Ureteropelvic stenosis occurs as a result of intraluminal or extraluminal alterations at the ureteropelvic junction. It is the most common cause of upper urinary tract obstruction. CASE REPORT We report about a rare case of a man with ureteropelvic junction obstruction and a renal pelvic stone accompanied by other congenital anomalies, including a sinistral inferior vena cava and agenesis of the opposite kidney. Multiple vessels were present in front of the renal pelvis, while the renal vein itself was situated dorsal to the left renal pelvis, resulting in compression and obstruction of the ureteropelvic junction. Dismembered pyeloplasty using the Anderson-Hynes technique was performed placing the ureter dorsal to the renal vein. CONCLUSION Various vascular anomalies, especially in the region of the vena cava, can result in renal vasculature abnormalities and development of secondary ureteropelvic stenosis. Ureteropelvic stenosis may coexist with other congenital defects.

Testicular lymphoma represents the commonest testicular malignancy in men older than 50 years. MR imaging of the scrotum is an efficient supplemental diagnostic tool in the evaluation of scrotal diseases. We report two cases of primary diffuse large B-cell testicular lymphoma, presented in men over the age of 50 years. MR imaging revealed the presence of a hypointense intratesticular mass lesion on T2-weighted images, strongly and heterogeneously enhancing after gadolinium administration.

We evaluated the effects of vardenafil on testicular androgen-binding protein secretion (ABP). Bilaterally obstructed azoospermic (OA)-men (n = 19) (group A) underwent unilateral testicular biopsy. A group of nonobstructed azoospermic (NOA)-men (n = 68) (group B) underwent bilateral testicular biopsy. ABP secretion in vitro by testicular tissue was assessed in each participant of every group. In addition, intracytoplasmic sperm injection (ICSI) cycles were performed in several couples of group A or group B using frozen/thawed spermatozoa from the biopsy material. Ten OA-men (group A1), 14 NOA-men (group B1), and nine different NOA-men (group B2) had been positive for spermatozoa in the biopsy but pregnancies were not achieved in the respective female partners. Men of groups A1, B1 and B2 were treated with vardenafil, vardenafil and L-carnitine respectively. Then, the men of groups A1, B1 and B2 underwent a second testicular (unilateral) biopsy. Within the group A1 and within the group B1, ABP secretion rate was significantly larger after vardenafil treatment than prior to vardenafil treatment. In addition, fertilisation rates in ICSI cycles within groups A1 or B1 were not affected by vardenafil administration. Vardenafil administration in NOA-men increased ABP secretion and did not affect detrimentally the presence of testicular foci of advanced spermatogenesis.

A 74-year-old man underwent multidetector CT virtual cystoscopy due to macroscopic hematuria. A large, irregularly-surfaced, solid bladder mass was detected, infiltrating the perivesical fat, the seminal vesicles and the prostate. CT examination of the chest and abdomen showed no distant metastases. Radical cystectomy was performed and pathology reported pure small cell carcinoma of the urinary bladder. J Postgrad Med

A 70-year-old man presented with fever, left flank pain and scrotal enlargement. CT scan of the thorax and abdomen revealed findings compatible with pulmonary and kidney tuberculous involvement. Sonographic and MRI examination of the scrotum showed bilateral testicular enlargement and the presence of multiple nodules involving both the testis and the epididymis. Urine cultures obtained from a percutaneous left nephrostomy were positive for tuberculous bacilli, and the patient was placed on anti-tuberculous treatment.

Investigation of the developmental potential post-injection of a pre-decondensed or non-pre-decondensed sperm head into the female pronucleus of a pre-activated oocyte. Rat pre-activated oocytes were treated with intrapronuclear pre-decondensed sperm head injections (IPSHI) (n = 133) or intrapronuclear non-pre-decondensed sperm head injections (INPSHI) (n = 138). All injected oocytes were transferred to pseudopregnant female recipients. Rat IPSHI techniques resulted in the delivery of five healthy offspring. Rat INPSHI techniques did not result in any pregnancies. Rat IPSHI techniques can result in delivery of healthy offspring. Successful performance of human IPSHI techniques might serve as a novel method to manage cases of intracytoplasmic sperm injection failure due to lack of development of male pronucleus or due to failure in pronuclei fusion. Andrologia

This 6-month double-blind, randomized, parallel-group study compared two dose regimens of Libeprosta(R), the lipidosterolic extract of Serenoa repens in 100 male outpatients with lower urinary tract symptoms suggestive of benign prostatic hyperplasia (BPH). The patients received two 80-mg tablets twice daily or two 80-mg tablets three times daily. Baseline evaluations included maximum and mean urinary flow, rates, postvoid residual urine volume, and International Prostate Symptom Score (I-PSS) total and quality-of-life scores. Both regimens significantly reduced the I-PSS mean total score from baseline values (P

We evaluated the role of the sensitive quantitative telomerase assay (SQTA) in the management of men with non-mosaic Klinefelter's syndrome (KS). Diagnostic testicular biopsy (DTB) was performed in 24 men with KS. A part of the DTB was stained and the remaining fragment was processed for the SQTA. After 3-18 months, a therapeutic testicular biopsy (TTB) was performed in the same testicle and the recovered specimens were processed to identify spermatozoa. Men with a SQTA outcome equal to 0.00 Units microg-1 protein (n = 7) demonstrated therapeutic testicular biopsy material that was negative for spermatogenic cells. In five men with a SQTA outcome of 8.11-38.03 Units microg-1, the most advanced germ cell was the spermatogonium/primary spermatocyte. In the remaining 12 men, the most advanced spermatogenic cell in the TTB was the spermatozoon. In these men, the SQTA outcome was equal to 25.76-92.68 Units microg-1 protein. Using 39.00 Units microg-1 protein as a cut-off value, the accuracy of the SQTA in identifying men positive for spermatozoa was 91.6%. It appears that the SQTA has a role for identifying non-mosaic KS men who have testicular spermatozoa. Andrologia

A case of a 70 year old woman with acute urinary retention and primary Sjogren-Syndrome is presented. On clinical examination a total closure of labia minor was diagnosed. Surgical detachment of labia minor was performed and full recovery was achieved.

Three rare cases of benign ureteral polyps are presented. The rareness of benign mesenchymal ureteral tumors and the difficulty in pre-operative differential diagnosis from malignant epithelial are remarkable. The diagnosis is made on characteristic appearance at operation and is confirmed by frozen section and histological examination.

We report a case of renal oncocytoma which was found incidentally during the nephroureterectomy for renal pelvis carcinoma. The coexistence of two tumors on the kidney with absolutely different origin one from the other is extremely rare and interesting. Herein we discuss the clinical, morphological, histological, ultrastructural and angiographical characteristics of oncocytoma.