Comparative Analyses and Ablation Efficiency of Thulium Fiber Laser by Stone Composition.

PURPOSE: There are limited data on ablation effects of thulium fiber laser (TFL) settings with varying stone composition. Similarly, little is known surrounding the photothermal effects of TFL lithotripsy regarding the chemical and structural changes after visible char formation. We aim to understand the TFL's ablative efficiency across various stone types and laser settings, while simultaneously investigating the photothermal effects of TFL lithotripsy. MATERIALS AND METHODS: Human specimens of calcium oxalate monohydrate, calcium oxalate dihydrate, uric acid, struvite, cystine, carbonate apatite, and brushite stones were ablated using 13 prespecified settings with the Coloplast TFL Drive. Pre- and postablation mass, ablation time, and total energy were recorded. Qualitative ablative observations were recorded at 1-minute intervals with photographs and gross description. Samples were analyzed with Fourier-transform infrared spectroscopy pre- and postablation and electron microscopy postablation to assess the photothermal effects of TFL. RESULTS: Across all settings and stone types, 0.05 J × 1000 Hz was the best numerically efficient ablation setting. When selected for more clinically relevant laser settings (ie, 10-20 W), 0.2 J × 100 Hz, short pulse was the most numerically efficient setting for calcium oxalate dihydrate, cystine, and struvite stones. Calcium oxalate monohydrate ablated with the best numerical efficiency at 0.4 J × 40 Hz, short pulse. Uric acid and carbonate apatite stones ablated with the best numerical efficiency at 0.3 J × 60 Hz, short pulse. Brushite stones ablated with the best numerical efficiency at 0.5 J × 30 Hz, short pulse. Pulse duration impacted ablation effectiveness greatly with 6/8 (75%) of inadequate ablations occurring in medium or long pulse settings. The average percent of mass lost during ablation was 57%; cystine stones averaged the highest percent mass lost at 71%. Charring was observed in 36/91 (40%) specimens. Charring was most often seen in uric acid, cystine, and brushite stones across all laser settings. Electron microscopy of char demonstrated a porous melting effect different to that of brittle fracture. Fourier-transform infrared spectroscopy of brushite char demonstrated a chemical composition change to amorphous calcium phosphate. CONCLUSIONS: We describe the optimal ablation settings based on stone composition, which may guide urologists towards more stone-specific care when using thulium laser for treating renal stones (lower energy settings would be safer for ureteral stones). For patients with unknown stone composition, lasers can be preset to target common stone types or adjusted based on visual cues. We recommend using short pulse for all TFL lithotripsy of calculi and altering the settings based on visual cues and efficiency to minimize the charring, an effect which can make the stone refractory to further dusting and fragmentation.

Indications for and results of renal autotransplantation.

PURPOSE OF REVIEW: To understand the indications and outcomes of renal autotransplantation, and when to consider this unique procedure for patients. RECENT FINDINGS: Renal autotransplantation confers acceptably low rates of graft failure and prevents need for long-term dialysis. Renal autotransplantation remains an important management strategy in very select patients for complex renovascular disease, ureteral stricture disease, ureteral trauma, upper urinary tract urothelial carcinoma, renal cell carcinoma, and Loin-Pain Hematuria Syndrome. With advancements in minimally invasive procedures, the application of renal autotransplantation for refractory stone disease is rare but exists. Robot-assisted laparoscopic renal autotransplantation demonstrates reproducible graft success and complication rates with improved perioperative outcomes (ex. hospital length of stay) - though comparative studies are lacking. Patients would benefit from a multidisciplinary approach from renal transplant surgeons, vascular surgeons, urologists, nephrologists, dieticians, pain management providers, social workers, and psychiatrists. SUMMARY: In experienced hands, renal autotransplantation is a reasonable treatment approach for complex and refractory renal vascular disease, Loin-Pain Hematuria Syndrome, ureteral strictures and trauma, upper urinary tract malignancy, and stone disease in highly select patients.

Robotic deep inferior epigastric perforator flap harvest in breast reconstruction.

INTRODUCTION: Reducing donor site morbidity after deep inferior epigastric artery perforator (DIEP) flap harvest relies mainly upon maintaining integrity of the anterior rectus sheath fascia. The purpose of this study is to describe our minimally-invasive technique for robotic DIEP flap harvest. METHODS: A retrospective review of four patients undergoing seven robotic-assisted DIEP flaps from 2019 to 2020 was conducted. Average patient age and BMI were 52 years (range: 45-60 years) and 26.7 kg/m2 (range: 20.6-32.4 kg/m2 ), respectively. Average follow-up was 6.31 months (range: 5.73-7.27 months). Robotic flap harvest was performed with intramuscular perforator dissection in standard fashion, followed by the transabdominal preperitoneal (TAPP) approach to DIEP pedicle harvest using the da Vinci Xi robot. Data was collected on demographic information, perioperative characteristics. Primary outcomes included successful flap harvest as well as donor site morbidity (e.g., abdominal bulge, hernia, bowel obstruction, etc.). RESULTS: All four patients underwent bilateral abdominally-based free flap reconstruction. Three patients received bilateral robotic DIEP flaps, and one patient underwent unilateral robotic DIEP flap reconstruction. The da Vinci Xi robot was used in all cases. Average flap weight and pedicle length were 522 g (range: 110-809 g) and 11.2 cm (range: 10-12 cm), respectively. There were no flap failures, and no patient experienced abdominal wall donor site morbidity on physical exam. CONCLUSION: While further studies are needed to validate its use, this report represents the largest series of robotic DIEP flap harvests to date and is a valuable addition to the literature.

Microsurgically Assisted Inguinal Hernia Repair and Simultaneous Male Fertility Procedures: Rationale, Technique and Outcomes.

PURPOSE: Inguinal herniorrhaphy is the most common general surgical procedure. It is associated with frequent complications such as recurrence in 2.0% to 14.1% of cases with mesh as well as postoperative hematoma in 4.5% of cases, reduced sensation in 0% to 42.8%, chronic postoperative pain in 5.1%, vasal injury in 0.1% to 0.53% and infection in 3% to 6%. Drawing on our experience with the operating microscope for varicocelectomy, vasectomy reversal and repair of iatrogenic vasal obstruction from hernia repair, we applied the operating microscope for inguinal hernia repair. This study describes the rationale, technique and outcomes of microsurgically assisted inguinal hernia repair. MATERIALS AND METHODS: A total of 291 microsurgically assisted inguinal hernia repairs were performed in 253 men by the same urologist (MG). Simultaneous microsurgical varicocelectomy or other testicular procedures were performed in 83% of cases. All were open repairs through an inguinal incision with the vas deferens, ilioinguinal nerve, genital branch of the genitofemoral nerve, and spermatic vasculature identified and preserved. Median followup was 8.6 months. Outcomes were assessed by examination, pain reporting and pathology reports. RESULTS: Chronic postoperative pain, sensory loss, infection, hematoma, vasal injury and recurrence were assessed. The incidence of hematoma was 0.85%. No recurrent hernia, chronic postoperative pain, sensory loss, infection or vasal injury was reported. CONCLUSIONS: Using an operating microscope the complications of inguinal hernia repair, such as vasal obstruction, testicular atrophy, recurrence, infection, hematoma, chronic postoperative pain and loss of sensation, are minimized. Microsurgically assisted hernia repair is a promising technique, especially when performed by a urologist who simultaneously performs microsurgical varicocelectomy or procedures involving spermatic cord structures or the testis.

Metabolic syndrome and sexual dysfunction.

PURPOSE OF REVIEW: To describe the connection between metabolic syndrome and male sexual dysfunction. RECENT FINDINGS: Concurrent with the obesity epidemic, metabolic syndrome in the United States is reaching crisis levels. A myriad of comorbidities are rising as well, affecting cost and quality of life. Sexual dysfunction is one of these comorbidities, with an extremely high prevalence, which will only increase as the population ages.In light of this ubiquity, recent research has explored the mechanisms of decreased libido, hypogonadism and erectile dysfunction through the lens of metabolic syndrome and its individual components. Strong associations are seen between male sexual dysfunction and central obesity, poor glycemic control, hyperlipidemia, as well as hypertension. SUMMARY: The constellation of risk factors that make up metabolic syndrome are linked to male sexual dysfunction and are largely modifiable. Therefore, effective interventions targeting the underlying pathophysiology have the potential to greatly impact and improve patient sexual function and, ultimately, quality of life.

Micronutrient inadequacy and urinary stone disease: an analysis of the National Health and Nutrition Examination Survey 2007-2018.

Urinary stone disease is common and affects approximately 10% of the American adults. The role of diet in stone formation is well-recognized; however, the literature focus has been on dietary excess rather than micronutrient inadequacy. As patients with stones may be at risk for nutrient inadequacies, we investigated the role of micronutrient inadequacy in stone formation by performing a cross-sectional analysis of the National Health and Nutrition Examination Survey on adults who were not taking dietary supplements. Micronutrient intake was obtained from 24-h dietary recalls, and usual intake was calculated. Survey-weighted, adjusted logistic regression was used for an incident analysis on having any history of stones. An additional analysis on recurrent stone-formers was performed with the outcome being 2 or more stones passed. Finally, a sensitivity analysis using quasi-Poisson regression was performed with the outcome being number of stones passed. There were 9777 respondents representing 81,087,345 adults, of which 9.36% had a stone history. Our incident analysis revealed inadequate vitamin A intake to be associated with stone formation (OR 1.33, 95% CI: 1.03-1.71). Recurrent analysis did not find any significant associations, while our sensitivity analysis revealed inadequate vitamin A (IRR 1.96, 95% CI: 1.28-3.00) and pyridoxine (IRR 1.99, 95% CI: 1.11-3.55) to be associated with a higher number of recurrent stones. Hence, inadequate dietary intake of vitamin A and pyridoxine was associated with nephrolithiasis. Further research is needed to identify the roles of these micronutrients in stone-formers and the potential for evaluation and treatment.

Antimicrobial Prophylaxis for Percutaneous Nephrolithotomy: Contemporary Practice Patterns.

Background: Updated in 2019, the American Urological Association's (AUA) Best Practice Statement on Urologic Procedures and Antimicrobial Prophylaxis outlines prophylaxis for percutaneous nephrolithotomy (PCNL). Recent studies have challenged these recommendations. We hypothesized that endourologists do not routinely follow the AUA's statement on antibiotic use during PCNL and assessed their prescribing patterns. Methods: A 24-question survey was distributed to members of the Endourological Society. The primary outcome was adherence to the AUA's recommendations. Two multiple logistic regression analyses were performed with demographics and antibiotic preference as predictors of following the AUA. Results: A total of 51.4% of endourologists follow the AUA Best Practice Statement for antimicrobial prophylaxis of uncomplicated PCNL. No demographic data were predictive of following the AUA. 90.9% and 83.6% reported they have "never" used the first-line recommendation options of metronidazole and aztreonam, respectively. Preferred antibiotics were cephalosporins (uncomplicated 60%, complicated 52.6%), fluoroquinolones (13.3%, 7.2%), aminoglycosides (12.7%, 17.8%), penicillins (7.9%, 11.2%), carbapenems (0.6%, 0.7%), trimethoprim-sulfamethoxazole (2.4%, 5.9%), fosfomycin (0.6%, 0.7%), nitrofurantoin (2.4%, 2.6%), aztreonam (0%, 0.7%), and clindamycin (0%, 0.7%). For uncomplicated PCNL, 63.1% prescribe ≤24 hours of perioperative antibiotics. For complicated PCNL, 16.2% prescribe ≤24 hours of perioperative antibiotics, while 20.4% begin antibiotics 7 or more days prior. Conclusions: Nearly half of respondents do not follow the AUA's recommendations for antibiotic choice for PCNL. Few endourologists prescribe 7 days of preoperative antibiotics for complicated PCNL despite supporting data. Metronidazole and aztreonam are rarely used as a first-line antibiotic choice for PCNL and their roles needs to be further evaluated as first-line prophylaxis recommendations. Updates on antibiotic recommendations for PCNL are needed based on current literature, antimicrobial stewardship, and contemporary practice patterns.

100% N4-acetyl-sulfamethoxazole stone induced by Trimethoprim-Sulfamethoxazole in an HIV patient being treated for toxoplasmosis.

Trimethoprim-Sulfamethoxazole is a common antibiotic used to treat urinary tract infections, as well as a prophylactic agent in HIV patients with low CD4 counts. Exceedingly rare are stones consisting purely of its metabolite, N4-acetyl-sulfamethoxazole, and management strategies are not well documented in the literature. We present a case of a patient with HIV who was found to have obstructing ureteral calculi composed of 100% N4-acetyl-sulfamethoxazole. Our report contributes a unique case of a Bactrim-induced stone in an immunocompromised patient. Similar patients can be prophylactically treated with diuresis and urinary alkalinization, as well as consideration for alternative medication use.

Propeller Flap Perineal Urethrostomy Revision.

OBJECTIVE: To describe a technique for perineal urethrostomy (PU) revision using a posterior thigh propeller flap for a complex repair at high risk for stenosis. METHODS: Our technique utilizes the consistent posterior thigh perforators for a local flap with ideal length and thickness for repair. The stenotic PU is incised. Potential flaps are marked around a perforator blood supply closest to the defect. The flap is then elevated and rotated on its pedicle with its apex placed directly in the defect. Absorbable sutures partially tubularize the flap apex at the level of the urethrotomy which is calibrated to 30 Fr. We subsequently monitored the patient's clinical progress. RESULTS: With 17 months of follow-up the patient is voiding well without complaint, reports improved quality of life with a patent PU. Post void residuals have been less than 100cc. The patient, who has had a long history of urinary tract infections requiring hospitalization, has only reported one infection during follow up which was treated as an out-patient. CONCLUSION: For challenging PU revisions a distant local propeller flap of healthy tissue outside the zone of injury is the ideal choice for length, thickness, and minimal morbidity resulting in excellent clinical results for our patient.

Vitamin D and Kidney Stones.

This review explores the relationship between vitamin D supplementation and lithogenesis. A causal relationship has been assumed despite myriad studies demonstrating that therapeutic doses of vitamin D do not increase lithogenic risk. Select stone formers may be at increased risk for recurrence with vitamin D supplementation, possibly from CYP24A1 gene mutations. Additionally, the evidence for who is vitamin D deficient, and the benefits of supplementation in those not at risk for rickets, is sparse. Concerns may be avoidable as vitamin D screening appears unnecessary in most patients, and superior pharmacology is available which increases bone density, while decreasing stone formation.

Bilateral Open Ureteroceles with Concomitant Bladder Calculi in an Adult Male.

Background: Bilateral ureteroceles in adult males are a rare occurrence, made even more so with simultaneous presence of bladder calculi. Management strategies for such patients are not well documented in the literature. We present a rare case of bilateral open ureteroceles with large concomitant bladder calculi to contribute to the paucity of literature on management of such patients. Case Presentation: We present the case of a 35-year-old man whose gross hematuria work-up demonstrated right-sided hydroureteronephrosis in the setting of bilateral ureteroceles and multiple large bladder calculi up to 3.8 cm. Conclusion: Bilateral orthotopic single-system ureteroceles in an adult male are a rare finding especially when intraoperatively found to be open secondary to traumatic effects of large calculi. Ultrasonic and pneumatic lithotripsy is a safe, appropriate, and effective option for bilateral ureteroceles contributing to a large bladder stone burden. Our report contributes to the growing body of literature on orthotopic bilateral single-system ureteroceles in the adult population with concomitant significant stone burden.

Outcomes and peri-operative complications of robotic pyelolithotomy.

Standard of care for large or complex renal stones is percutaneous nephrolithotomy. Robotic pyelolithotomy, however, may be a feasible alternative, but limited data exist on its outcomes and complications. Our study objective was to describe the outcomes and peri-operative complications of robotic pyelolithotomy for complex renal calculi. We performed a retrospective analysis of robotic pyelolithotomy at our tertiary academic institution from 2015 to 2018. Demographics, stone clearance rates, complications, estimated blood loss, operative time, and length of stay were reported. 15 patients were included with a median age of 59 years (SD 15.3, 27-80) and BMI 25 kg/m2 (SD 4.6, 20.9-35.7). Median follow-up was 4 months. Median stone size was 3 cm (SD 1.2 cm, 2-5 cm). Concomitant pyeloplasty was performed in 2 patients, complete stone clearance in 11 (73%) cases and 4 out of 5 (80%) with a solitary stone. Median operative time was 191.5 min (SD 64.8 min, 110-303 min), with no open conversion. Median EBL was 70 ml (SD 65 ml, 20-250 ml) and median length of stay was 1 day (SD 1 day, 1-5 days). Median change in creatinine and eGFR were - 0.02 mg/dl and + 3 ml/min/1.73 m2. There were no cases of sepsis or post-operative fever and only one case of transfusion. Robotic pyelolithotomy appears safe and effective. Ultimately, less bleeding, lower septicemia, renal parenchymal preservation, and favorable stone-free rates in a single procedure make this as an attractive option in the management of select patients with large renal stone disease.

Endoscopic Combined Intrarenal Surgery Can Accurately Predict High Stone Clearance Rates on Postoperative CT.

OBJECTIVE: To determine stone clearance rates using endoscopic combined intrarenal surgery (ECIRS) and assess the accuracy of intraoperative prediction of stone-free (SF) status compared to postoperative CT scan. METHODS: A single institution, prospectively maintained database of ECIRS was queried for procedures performed 8/2017 to 1/2018. Retrograde access was performed using a ureteral sheath and flexible ureteroscope. Percutaneous nephrolithotomy was performed through a 30fr or 18fr sheath in prone position. Residual stone status was estimated at the end of each procedure and was verified with postoperative CT scan. SF was defined as no single stone >2mm3 on CT. RESULTS: One hundred and ten procedures were reviewed. Average age was 58.9 ± 12.6 years (range 26-87) and 69 (63%) were male. The mean stone size was 33.3 ± 23.5 mm (range 4-140 mm). Ninty-three patients (84.5%) were endoscopically estimated to be SF, of which 84 (90% of predicted SF cohort, 76% of total cohort) were confirmed SF via CT scan. The sensitivity for estimating SF status with ECIRS was 65.4% (95%CI 44.3%-82.8%), specificity was 100% (95%CI 95.7%-100.0%) and accuracy was 91.8% (95%CI 85.0%-96.2%). SF patients had significantly smaller stones than those with residual fragments (28.5 ± 2.1 vs 48.4 ± 5.7mm, P <.0001). On logistic regression, the factors associated with residual stones were preoperative stone burden (OR 1.03 per mm, 95%CI 1.01-1.05, P = .0004) and fluoroscopy time (OR 1.01 per minute, 95%CI 1.0-1.02, P = .0081). CONCLUSION: ECIRS accurately predicts clinical SF status and may obviate the need for additional CT scans. Consistent with prior studies, the primary determinant of residual stone after percutaneous nephrolithotomy is initial stone size.

Fertility Preservation in Male to Female Transgender Patients.

Gender dysphoria, or the incongruence between gender identification and sex assigned at birth with associated discomfort or distress, manifests in transgender patients, whose multifaceted care includes puberty suppression, cross-sex hormonal therapy, and gender-affirming surgery. Discussion of fertility preservation (FP) is paramount because many treatments compromise future fertility, and although transgender patients demonstrate desire for children, use of FP remains low for a plethora of reasons. In transgender women, established FP options include ejaculated sperm cryopreservation, electroejaculation, or testicular sperm extraction. Further research is needed regarding reproductive health and FP in transgender patients.

Differentiating Molecular Risk Assessments for Prostate Cancer.

It is critically important to the evolving goals of prostate biopsy to find clinically significant cancer with lethal potential and avoid detection of indolent disease. Better tests and markers are required for improved detection of clinically significant prostate cancer and avoidance of biopsies in men with indolent disease. Currently, there are myriad alternative prostate cancer risk-assessment tests available derived from serum and urine that are designed to improve the specificity for detection of "significant" prostate cancer. Herein we discuss these tests and their clinical implications.

Evaluation of Unplanned Hospital Readmissions After Major Urologic Inpatient Surgery in the Era of Accountable Care.

OBJECTIVE: To provide a multi-institutional analysis of clinical factors predicting unplanned hospital readmission after major inpatient urologic surgery. MATERIALS AND METHODS: The American College of Surgeons National Surgical Quality Improvement Program is a risk-adjusted data collection mechanism for analyzing clinical outcomes data including 30-day perioperative readmissions and complications. We identified 23,108 patients who underwent major inpatient urologic surgery from 2011 to 2012. Readmission rates were determined and stratified by procedure type. Multiple logistic regression was used to determine independent risk factors for 30-day unplanned hospital readmissions. RESULTS: Of a total of 23,108 patients undergoing urologic surgery, 1329 patients (5.8%) had unplanned readmissions. Upper tract reconstruction and urinary diversion without cystectomy (21/102) and with cystectomy (291/1662) had the highest rates of readmission of all procedures analyzed. Readmitted patients had a 64.2% (853/1329) and 64.4% (855/1329) rate of major and minor complications, respectively, compared with 6.7% (1459/21,779) and 15.9% (3462/21,779) for patients not readmitted (P <.02). Organ space infection (odds ratio [OR] 15.23), pulmonary embolism (OR 12.14), deep venous thrombosis (OR 10.96), and return to the operating room (OR 8.46) were the most substantial predictors of readmission. Laparoscopic-robotic procedures had significantly lower readmission rates compared with open procedures for prostatectomy, partial nephrectomy, and nephrectomy (P <.01). CONCLUSION: Readmission after inpatient urologic surgery occurs at a rate of 5.8%, with cystectomy and urinary diversion demonstrating the highest rates. Major and minor postoperative complications were the most substantial predictors of readmission. These results may guide risk reduction initiatives to prevent readmissions after major urologic surgery.

The role of estradiol in male reproductive function.

Traditionally, testosterone and estrogen have been considered to be male and female sex hormones, respectively. However, estradiol, the predominant form of estrogen, also plays a critical role in male sexual function. Estradiol in men is essential for modulating libido, erectile function, and spermatogenesis. Estrogen receptors, as well as aromatase, the enzyme that converts testosterone to estrogen, are abundant in brain, penis, and testis, organs important for sexual function. In the brain, estradiol synthesis is increased in areas related to sexual arousal. In addition, in the penis, estrogen receptors are found throughout the corpus cavernosum with high concentration around neurovascular bundles. Low testosterone and elevated estrogen increase the incidence of erectile dysfunction independently of one another. In the testes, spermatogenesis is modulated at every level by estrogen, starting with the hypothalamus-pituitary-gonadal axis, followed by the Leydig, Sertoli, and germ cells, and finishing with the ductal epithelium, epididymis, and mature sperm. Regulation of testicular cells by estradiol shows both an inhibitory and a stimulatory influence, indicating an intricate symphony of dose-dependent and temporally sensitive modulation. Our goal in this review is to elucidate the overall contribution of estradiol to male sexual function by looking at the hormone's effects on erectile function, spermatogenesis, and libido.

Urethroplasty Improves Overactive Bladder Symptoms in Men With Anterior Urethral Strictures.

OBJECTIVE: To assess the effect of urethroplasty on overactive bladder (OAB) symptoms. MATERIALS AND METHODS: From March 2011 to November 2014, 47 anterior urethroplasties were performed by a single surgeon (RSP). Of these, 42 men prospectively completed the validated Overactive Bladder Symptom Score (OABSS) prior to and after urethroplasty. Comparative analysis of preoperative to postoperative OABSS results was performed. RESULTS: The median (range) age of men who comprised our cohort was 49 (22-90). Questionnaires were completed preoperatively and at a median of 12 months (2.3-74.6) postoperatively. Stricture location included the following: bulbar (75%), penile (15%), and membranous (7.5%) urethra. Median stricture length was 3 cm (1-6). Half of the men underwent an excision and anastomotic repair, and half underwent buccal mucosal graft. Men experienced significant improvement in urinary flow rate, postvoid residual urine, and OAB symptoms reported on the OABSS. Of the 28/42 men with preoperative, clinically significant OAB (ie, OABSS ≥ 8), 25/28 reported a 54.2% (0%-100%) median reduction in OABSS, with only 1 patient reporting worsening of symptoms following surgery. Those men with the highest preoperative OABSS experienced the greatest improvement in OAB symptoms postoperatively. CONCLUSION: In men with anterior urethral strictures and OAB, urethroplasty decreased reported OABSS by >50% and cured 90% of men with clinically significant OAB symptoms.

Increased Body Mass Index in Men With Varicocele Is Associated With Larger Spermatic Vein Diameters When Supine.

OBJECTIVE: To evaluate the association of body mass index (BMI) and spermatic vein diameters (SVDs) in men treated for varicocele. SUBJECTS AND METHODS: One hundred fourteen men who underwent scrotal color duplex ultrasounds prior to microsurgical varicocelectomy were classified as normal (BMI = 18.5-24.9), overweight (25-29.9), or obese (≥30). SVDs were measured with and without Valsalva, standing and supine. SVD, pre- and postoperative semen analyses (SA) were compared. RESULTS: Forty-six (40.4%) men had normal BMI, 54 (47.3%) were overweight, and 14 (12.3%) were obese. Higher BMI was associated with smaller left testis volume and larger left SVD when supine (with and without Valsalva). The association was absent when standing. Men with higher BMI had smaller differences between their left SVD Valsalva diameters when standing vs supine. There were no differences among BMI classes for right SVD measurements, preoperative SA, and postoperative SA improvement. CONCLUSION: Increased BMI is associated with larger left SVD while supine, suggesting that increased abdominal pressure while recumbent may contribute to varicocele pathology in this population. Interestingly, as in the general population, a majority of the men were overweight.

Characteristics and outcomes of secondary nodules identified on initial computed tomography scan for patients undergoing resection for primary non-small cell lung cancer.

OBJECTIVE: We sought to define the prevalence, malignancy rate, and outcome of secondary nodules (SNs) detected on computed tomography (CT) scan for patients undergoing resection for primary non-small cell lung cancer (NSCLC). METHODS: In consecutive patients with NSCLC, we reviewed all CT scan reports obtained at diagnosis of the dominant tumor for description of SNs. When resected, pathology was reviewed. Serial CT reports for 2 years postoperatively were evaluated to follow SNs not resected. RESULTS: Among 155 patients, 88 (57%) were found to have SNs. A total of 137 SNs were evaluated (median size, 0.5 cm). Thirty-two nodules were resected at primary resection. Nineteen (61%) resected nodules were benign, whereas 13 (39%) were malignant (8 synchronous primary tumors and 5 lobar metastases). A total of 105 unresected nodules were followed by CT. Of these, 32 (30%) resolved completely, 20 (19%) shrunk, and 28 (27%) were stable, whereas 11 (11%) were lost to follow-up. Fourteen SNs (13%) grew, of which 5 were found to be malignant, each a new primary. Overall 5-year survival was not different between patients with or without SNs (67% vs 64%; P = .88). DISCUSSION: The prevalence of SNs on CT scan in patients undergoing resection for primary NSCLC is high. Only a low proportion of SNs are ever found to be malignant, predominantly those on the ipsilateral side as the dominant tumor. The presence of SNs has no effect on survival. Patients with SNs, if otherwise appropriately staged, should not be denied surgical therapy.