Villous adenoma of the renal pelvis: a common entity at an uncommon location

Villous adenoma is uncommonly seen in the urogenital tract and is even more rarely seen in the upper urinary tract and renal pelvis. Like colorectal adenomas, these neoplasms can transform into adenocarcinoma. The preoperative diagnosis is challenging due to their frequent association with hydronephrosis. Herein, we present the case of a villous adenoma of the renal pelvis in a 62-year-old man presenting with recurrent urinary tract infection. The computed tomography scan showed marked hydronephrosis but no suspicious mass in the right kidney. A laparoscopic right nephrectomy was performed. Gross examination revealed a dilated renal pelvis with an irregular exophytic lesion in the renal pelvis's upper surface. The histopathological examination showed slender, elongated villi with thin fibrovascular cores, consistent with villous adenoma morphology. Isolated villous adenomas have a favorable prognosis. However, the pathologist should undertake a search for an invasive component.

Application of diffusion-weighted magnetic resonance imaging in the differential diagnosis of hydronephrosis and pyonephrosis / 中华泌尿外科杂志

Objective To study the effect of diffusion-weighted magnetic resonance imaging (DW-MRI) in the differential diagnosis of hydronephrosis and pyonephrosis.Methods From March 2015 to October 2017,50 patients with renal stone and highly suspected infectious hydronephrosis underwent renal DW-MRI,and clinical materials were collected and analyzed retrospectively.Seventeen male and 33 female patients were enrolled with a mean age of (49.40 ±-10.51) years.The median maximum diameter of renal stone was 30.30 (17.38,56.01) mm and hydronephrosis was 46.39 (34.33,56.55) mm.No pyonephrosis was diagnosed by preoperative ultrasound or CT,while 29 cases of hydronephrosis and 21 cases of pyonephrosis were reported by preoperative DW-MRI.Final diagnoses of hydronephrosis and pyonephrosis were made according to whether the pelvic urine drainage was purulent or not during the surgery.DW-MRI reports and characteristics of DW images were analyzed retrospectively.Apparent diffusion coefficient (ADC) was calculated and ADC map constructed,which was compared between the two groups.Receiver operating characteristic curve (ROC) was drawn to analyze the area under curve (AUC) and the optimal cutoff of ADC value,with sensitivity and specificity.Results Thirty-three patients of hydronephrosis and 17 pyonephrosis were confirmed intraoperatively.The overall accuracy of diagnosis using DW-MRI was 84.00％ (42/50),with sensitivity of 88.24％ (15/17) and specificity of 81.82％ (27/33).Among 30 patients who underwent CT scan in our hospital,mean CT value of 18 hydronephrosis was (7.03 ± 3.26)HU and that of 12 pyonephrosis was (8.67 ± 3.52) HU,with no statistical significance (P ＞ 0.05).On DW image,when b ≥ 500 s/mm2,hydronephrosis signal intensity was lowered apparently,whereas pyonephrosis signal intensity was intensified.On ADC map,hydronephrosis appeared as hyperintensity,whereas pyonephrosis appeared as hypointensity.The mean ADC value of pyonephrosis group was lower than hydronephrosis group [(1.53 ±0.58) × 10-3 mm2/s vs.(2.86 ±0.56) × 10-3 mm2/s,p ＜0.01].ROC analysis revealed that AUC =0.92 (95％ CI 0.80-0.98),and the cut-off value of ADC for pyonephrosis diagnosis was 1.39 × 10-3 mm2/s,of which the sensitivity and specificity was 94.12％ and 84.85％ respectively.Conclusions Signal of pyonephrosis was enhanced on DW image,while decreased on ADC image.The ADC value of pyonephrosis was much lower than that of hydronephrosis,with which the differential diagnosis between pyonephrosis and hydronephrosis could be made efficiently.

Renal function recovery outcomes and risk factors of obstructive pyonephrosis after endoscopic stone removal / 中华泌尿外科杂志

Objective To investigate the renal function recovery outcomes and risk factors of obstructive pyonephrosis after endoscopic stone removal in 24 months.Methods 97 patients suffered pyonephrosis because of obstruction of urinary calculi were followed-up at least 24 months after stone removed by endoscopic procedures.74 patients'stones were removed by one-session procedure,other 23 cases had been drained firstly and accepted endoscopic stone removal afterwards.All patients' renal function(Cr and GFR)were followed-up at least 24 months.Results The stone free rate was 84.5%,76.3% patients had SIRS postoperatively,but no patients were admitted to ICU for severe infection complications,and no mortality occurred in all patients.There was no significant different change of mean serum creatinine and GFR before operation and 24 months follow-up.Age,preoperative GFR and perinephric infection were the risk factors of renal function recovery after endoscopic stone removal.Though atrophy kidney were reported in 1 3 patients in follow-up,only one patients needed kidney resection.Conclusions Endoscopic stone removal of obstructive pyenephrosis is safe,the renal function would be maintained after stone removal. Those who had old age,poor preoperative renal function and infection reaction beyond kidney would not recover.

The clinical value of CT attenuation values diagnosis of hydronephrosis with infection / 中华泌尿外科杂志

Objective To investigate the diagnostic and clinical significance of computerized tomography (CT) attenuation values (hounsfield unit,HU) in hydronephrosis with infection.Methods One hundred and eighty-five cases of upper urinary tract calculi with hydronephrosis from June 2014 to June 2016 were retrospectively analyzed.There were 82 males and 103 females with a mean age of (52.3 ± 13.1)years old,ranging 18-80 years old.58 cases suffered hydronephrosis without infection,55 cases suffered acute pyelonephritis and 72 cases suffered pyonephrosis.The CT attenuation values of the renal pelvis urine in three groups were measured.Results The CT attenuation value of hydronephrosis without infection group was (5.61 ± 3.67) HU,95 ％ CI(4.64-6.57) H U.In acute pyelonephritis group,CT attenuation value was (8.35 ± 5.63) HU,95％ CI(6.83-9.87) HU.In pyonephrosis group,the CT attenuation value was (13.92 ± 6.21) HU,95％ CI (12.46-5.38) HU.The CT attenuation value of pyelonephritis compared with that of hydronephrosis without infection was significant different.(P ＜ 0.01).The CT attenuation value of the patients with pyonephrosis was significantly higher than that of patients without infection and with pyelonephritis (P ＜ 0.01).Conclusions The CT attenuation value of renal pelvis urine can predict intrarenal infection.Furthermore,The measurement of CT attenuation value has some clinical significance in preoperative evaluation of hydronephrosis with infection.

Pyonephrosis caused by Salmonella sp. in a patient with polycystic kidney disease undergoing hemodialysis / Pionefrose causada por Salmonella sp. em um paciente com doença renal policística submetido a hemodiálise

AIMS: This article reports a case of pyonephrosis caused by Salmonella sp. in a patient with polycystic kidney disease undergoing hemodialysis treatment. CASE DESCRIPTION: An elderly male patient previously diagnosed with polycystic kidney disease undergoing standard hemodyalitic treatment presented uronephrosis, evolving to pyonephrosis caused by Salmonella sp., and was successfully treated with ciprofloxacin. CONCLUSIONS: The polycystic kidney disease may have contributed to the bacteria's attachment to the kidney, due to increase of permeability of the intestinal mucosa, easier bacterial translocation to bloodstream and its subsequent accommodation in the infected organ.

OBJETIVOS: Este artigo relata um caso de pionefrose causada por Salmonella sp. em paciente com doença renal policística em tratamento por hemodiálise. DESCRIÇÃO DO CASO: Um paciente idoso do sexo masculino, previamente diagnosticado com doença renal policística, em tratamento convencional por hemodiálise, apresentou uronefrose, evoluindo a pionefrose causada por Salmonella sp., sendo tratado com sucesso com ciprofloxacino. CONCLUSÕES: A doença renal policística pode ter contribuído para a instalação da bactéria no rim, visto o aumento da permeabilidade da mucosa intestinal e maior facilidade de translocação da bactéria para a corrente sanguínea e seu posterior alojamento no órgão infectado.

33 Cases of the treatment of upper urinary tract calculi complicated with pyonephrosis through one-stage renal calculi removal by percutaneous nephroscope / 中国综合临床

Objective To investigate the efficacy and safety,as well as surgical essentials of upper urinary tract calculi (calculi being≤2 cm in diameter) complicated with pre-surgical uncertain pyonephrosis through one-stage renal calculi removal by percutaneous nephrolithotomy and suction device.Methods Retrospective analysis was used to detect the thirty-three cases with upper urinary tract calculi complicated with pre-surgical uncertain pyonephrosis collected from August 2010 to March 2016 in Yellow River Sanmenxia Hospital Affiliated to Henan University of Science and Technology,all the cases in the group had no pre-surgical fever,no apparent infection by blood-urine routine test,different degrees of hydronephrosis and no indications of pyonephrosis confirmed by CT and color Doppler ultrasonography,no pre-surgical anti-infection cure,pyonephrosis was found during the operation.First of all,a suction device was used to suck pus through percutaneous renal channel,rinsing repeatedly with small amount of fluid until the sucked rinsing fluid was clear;then,the one-stage calculi was removed by percutaneous renal lithotripsy,and the pus was sent to be cultured during the surgery,and the cases were treated by postoperative intravenous anti-infection for seven to seventeen days.Operation condition,postoperative blood routine,temperature,calculi removal and other clinical recovery conditions should be carefully observed.Results All the 33 cases underwent the one-stage single channel percutaneous nephrolithotom,the surgery was successful,the operation lasted 28-59 minutes,with an average of 41 minutes per case.Within the first-week of operation,CT reexamination showed the stone-free rate was 90.9% (30/33),and three cases had residual stone,the maximum diameter was about 6mm;seven cases had high fever within 3 days after the surgery (21.2%),and the temperature in four cases was higher than 38.5℃(12.1%) and two cases had fever within 3-6 days after surgery (6.1%),the highest temperature reached 38.0℃,and no fever existed after 6 days.Compared with preoperative values,the postoperative blood routine indicated that the surgery-relevant hemoglobin has decreased to (6.16±5.21) g/L;three days after surgery,white blood cell count was (7.16±4.86) 109/L.There were no severe complications such as sepsis,septic shock,renal abscess,hemorrhage.All cases were followed up for 6 to 36 months and no secondary pyonephrosis or renal dysfunction occurred during that period.Conclusion The treatment of upper urinary tract calculi,complicated with pyonephrosis without pre-surgical fever through one-stage renal calculi removal by percutaneous nephrolithotomy and suction device is effective and safe,it can be used as the routine method in basic hospitals and more attention should be paid to the operation and renal pelvic pressure in order to avoid the occurrence of complication.

Experience of standard access assisted MPCNL combined with EMS for the treatment of staghorn calculi accompanied with pyonephrosis / 中国内镜杂志

Objective To investigate the efficacy and safety of standard access assisted minimally access percutaneous nephrolithotomy (MPCNL) combined with EMS lithotripsy system in treatment of staghorn caculi accompanied with pyonephrosis. Methods From October 2015 to May 2017, we retrospectively analyzed the clinical data of 53 patients of staghorn calculi accompanied with pyonephrosis (55 sides, 2 patients with bilateral) were treated with using the special urology ultrasound, kidney dome puncture path method method to do standard channel assisted MPCNL combined with EMS. To summarize the operation time, stone clearance rate, postoperative hospital stay, postoperative blood transfusion rate and complications. Results 53 patients had a total of 55 kidneys had been established first-staged F24 channels,and successfully gravel stone. The operation time was (82.3 ± 22.5) min; 72.7% of the renal had been established first-staged F24 channels assisted F16/18 dual channel;18.2% for the first phase F24 and secondary phase F16/18 of the dual or multi-channel; 9.1% PCNL combined with retrograde flexible ureteroscope; 4 cases of extracorporeal shock wave lithotripsy. The initial stone-free rate was 70.9% (39/55), total stone-free rate was 89.1% (49/55). 2 patients with postoperative blood transfusion, 1 case of super-selective renal artery embolization to stop bleeding, 3 patients had postoperative fever, 1 case of septic shock, 2 cases of conservative treatment of a small amount of liquid chest, 1 case of apparent low back pain due to urine extravasation, given pain medication.no other serious complications. Conclusions By special urology ultrasound probe guide, use the kidney dome puncture path method to do standard channel assisted MPCNL combined with EMS for the treatment of staghorn calculi accompanied with pyonephrosis, its benefits in high stone-free rate, low renal pelvis pressure, high security rate, low complication rate and so on. Therefore, it is worthy of clinical application.

Infecção do trato urinário / Urinary tract infection

A infecção do trato urinário corresponde a uma resposta inflamatória do urotélio em consequência à invasão bacteriana, geralmente acompanhada de bacteriúria e piúria. No mundo a Escherichia coli uropatogênica causa 80% das cistites não complicadas. O principal fator de virulência bacteriano para a infecção do trato urinário é a adesão bacteriana que promove a fixação na superfície do epitélio tecidual. Originalmente a cultura de urina com o crescimento de um número superior a 100.000 unidades formadoras de colônias indicam a infecção, porém algumas condições especiais são apontadas tanto em pacientes com infecção crônica como em crianças. Neste trabalho apontamos, de acordo com os tipos de infecção do trato urinário bacteriana, as opções de tratamento com alguns dos principais antimicrobianos da atualidade.

Infecção do trato urinário / Urinary tract infection

A infecção do trato urinário corresponde a uma resposta inflamatória do urotélio em consequência à invasão bacteriana, geralmente acompanhada de bacteriúria e piúria. No mundo, a Escherichia coli uropatogênica causa 80% das cistites não complicadas. O principal fator de virulência bacteriana para a infecção do trato urinário é a adesão bacteriana que promove a fixação na superfície do epitélio tecidual. Originalmente a cultura de urina com o crescimento de um número superior a 100.000 unidades formadoras de colônias indicam a infecção, porém algumas condições especiais são apontadas tanto em pacientes com infecção crônica como em crianças. Neste trabalho apontamos, de acordo com os tipos de infecção do trato urinário bacteriana, as opções de tratamento com alguns dos principais antimicrobianos da atualidade.

Minimally invasive nercutaneous nephrolithotomy combined with negative pressure system in one-stage treatment of calculus pyonephrosis / 中华泌尿外科杂志

Objective To evaluate the efficacy and safety of minimally invasive percutaneous nephrolithotomy combined with negative pressure system in one-stage treatment of calculus pyonephrosis.Methods Eighty-three cases of calculus pyonephrosis,including 15 upper ureteral calculus cases,9 renal pelvis calculus cases,28 multiple calculus cases and 31 staghorn calculus cases,were retrospectively analysed.The diameter of the stone was from 1.2 to 6.3 cm.All the patients were punctured under X-ray or ultrasound guidance and established an access of 20 F.A 12 F nephroscope,combined with negative pressure system,was inserted to the collecting system to suck off the liquor pus.The stone was fragmented by pneumatic lithotripsy or holmium laser lithotripsy at one-stage.Negative pressure system was used to reduce the intrapelvic pressure during the operation.Results All the patients were treated successfully.The average operative time was 34 ± 19 min.The upper ureteral calculus and renal pelvis calculus cases were all stonefree at one-stage treatment.Of the other 59 cases,33 cases were stone-free and 26 cases need a secondlook.The total stone free rate was 68.7％(57/83)at one-stage and 91.6％(76/83)at second-look.Only 7 patients had fever after operation and no patient had sepsis or shock.Conclusion Combined with negative pressure system,minimally invasive percutaueous nephrolithotomy via a 20 F tract is safe and effective for one-stage treatment of calculus pyonephrosis.

Antegrade pressure measurement of urinary tract in children with persistent hydronephrosis

INTRODUCTION: Dilation of urinary tract occurs without the presence of obstruction. Diagnostic methods that depend on renal function may elicit mistaken diagnosis. Whitaker (1973) proposed the evaluation of urinary tract pressure submitted to constant flow. Other investigators proposed perfusion of renal pelvis under controlled pressure, making the method more physiological and reproducible. The objective of the present study was to evaluate the results of the anterograde pressure measurement (APM) of the urinary tract of children with persistent hydronephrosis after surgery suspected to present persistent obstruction. MATERIALS AND METHODS: Along 12 years, 26 renal units with persistent hydronephrosis after surgery (12 PUJ and 14 VUJ) were submitted to evaluation of the renal tract pressure in order to decide the form of treatment. Previous radionuclide scans with DTPA, intravenous pyelographies and ultrasounds were considered undetermined in relation to obstruction in 10 occasions and obstructive in 16. APM was performed under radioscopy through renal pelvis puncture or previous stoma. Saline with methylene blue + iodine contrast was infused under constant pressure of 40 cm H2O to fill the urinary system. The ureteral opening pressure was measured following the opening of the system and stabilization of the water column. RESULTS: Among the 10 cases with undetermined previous diagnosis, APM was considered non-obstructive in two and those were treated clinically and eight were considered obstructive and were submitted to surgery. Among the 16 cases previously classified as obstructive, nine confirmed obstruction and were submitted to surgery. Seven cases were considered non-obstructive, and were treated clinically, with stable DMSA and hydronephrosis. CONCLUSIONS: APM avoided unnecessary surgery in one third of the cases and was important to treatment decision in 100%. We believe that this simple test is an excellent diagnostic tool when selectively applied mainly in the presence of functional deficit.

Fragmented Pigtail Percutaneous Nephrostomy Tubes: Etiology and Management

PURPOSE: To review our experience with the management of fragmented and retained pigtail percutaneous nephrostomy (PCN) tubes and to explore the reasons for the fragmentation. MATERIALS AND METHODS: We retrospectively reviewed our institute database from January 2006 to December 2011 for patients who had undergone retrieval of fragmented PCN tubes. We assessed the preoperative factors, operative technique, and post-operative outcomes. RESULTS: A total of seven patients (4 males and 3 females) had been diagnosed with fragmented PCN tubes. The mean age of the patients was 41.5 years. Of the seven patients, five required antegrade instrumentation by way of a percutaneous tract to remove the foreign body, mostly along with stone retrieval. One patient underwent ureterorenoscopy and pneumolithotripsy for a ureteric stone along with ureteroscopic removal of the PCN fragment. Another patient underwent nephrectomy of the kidney containing the PCN fragment because it had become nonfunctioning. All patients were free of stones and symptoms on follow-up. CONCLUSIONS: A prolonged waiting period for definitive surgery, urinary infection, and associated stone disease are significant factors causing fragmentation of PCN tubes. Proper insertion techniques, regular timed changes of the PCN tube, appropriate care of the PCN tube, and early surgery for underlying stone disease are required to avoid this complication. Patients with retained PCN tubes can be managed effectively with antegrade or retrograde endoscopic techniques while definitive management of the primary pathology is carried out, without any additional morbidity.

Combined percutaneous nephrostomy and ureteroscopic lithotripsy in the treatment of calculous obstructive pyonephrosis / 中华泌尿外科杂志

Objective To summarize the clinical experience of combined percutaneous nephrostomy(PCN)and ureteroseopic lithotripsy(URL)in the treatment of calculous obstructive pyonephrosis. Methods A total of 86 cases were underwent combined PCN and URL. Results Sixty-nine cases with lower ureteric calculi were treated successfully.During lithotripsy,calculous fragments migrated into renal pelvis in 6 of 17 cases with middle and upper ureteric calculi.These patients were placed with DJ stents and received antibiotics.The fragments passed OUt from 7 t0 16 days postoperatively.The rest 11 cases were placed with DJ stents and received antibiotics as well. They were accepted ESWL aher 2 or 3 weeks.The average operation time was 51 mins.No complication such as infection exacerbation,bacteremia,sepsis and shock occurred. Conclusions Combined PCN and URL is an effective and safe minimally invasive method tot treatment of calculous obstructive pyonephrosis.

One phase treatment of renal calculi accompanied with pyonephrosis by percutaneous nephrolithotripsy / 中华泌尿外科杂志

Objective To evaluate the method, clinical efficacy and safety of one phase treat-ment of renal calculi associated with pyonephrosis by percutaneous nephrolithotripsy(PCNL) by pneu-matic combined with ultrasonic lithotriptor. Methods Sixty-six cases of renal calculi accompanied with pyonephrosis were treated with PCNL. The renal calyx was punctured under ultrasound gui-dance, then the tract was dilated from F8 to F16 by peel-away vascular access sheathes. After the in-sertion of the flexible sheath, metallic dilator was inserted and the flexible sheath was pulled out. The tract was dilated by metallic sheath to F21 and the operation sheath and nephroseope were placed into working tract. EMS III LithoClast Master was used. Ultrasonic powered lithotriptor probe with suc-tion was used to clear the liquor puris and calculus fragments with low-pressure or no-pressure. The combined pneumatic and ultrasonic powered lithotriptor was used to break and clear the calculi. Re-salts Of the 66 cases, there was no bacteremia or pyaemia intraoperatively and postoperatively. And there was no other severe complication occurred intraoperatively. One phase PCNL was successfully completed in 60 cases. Other 4 cases had residual calculi less than 1.5 em in diameter and received ESWL to break the calculi, 2 cases had bigger residual calculi and accepted second PCNL 1 week after the first intervention. In the follow-up period, the 3 month post-operative serum Cr was 56-203 μmol/L with an average decrease of 40 μmol/L, GFR was 5.0-56.2 ml/min with an average increase of 23.6 ml/min compared with the pre-operative data. At 6 months postoperative serum Cr was 56-158 μmol/L with average decrease of 31 μmol/L, GFR was 5.0-79.2 ml/min with an average in-crease of 30.2 ml/min. Conclusion Application of PCNL in the treatment of patients with renal cal-culi accompanied with pyonephrosis is safe, cost-effective and clinically efficient by pneumatic com-bined with ultrasonic lithotriptor.

Pionefrose em paciente comcálculo ureteral infectado sem comprometimento do estado geral / Pyonephrosis in a patient with infected ureteral calculus without general state deterioration

Relatamos o caso de uma paciente de 34 anos que apresentou há 2 anos episódios de cólica renal, sendo diagnosticada litíase renal. Há 1 mês houveintensificação dos episódios de dor lombar à esquerda com irradiação para genitália, disúria, polaciúria, urgência urinária, febre alta e calafrios. IniciouCiprofloxacina sem melhora significativa dos sintomas, tendo sido internada para investigação diagnóstica e tratamento. Ao exame físico encontrava-sehipocorada, taquicárdica e febril. Abdômen doloroso à palpação e presença de massa palpável em hipocôndrio esquerdo. Os exames da admissãomostraram Hemoglobina 6,5g/dL, Leucócitos 17.100/mm3, Plaquetas 656.000/mm3, Creatinina 1,0mg/dL. A ultrassonografia abdominal evidenciounefrolitíase e hidronefrose à esquerda. Foi realizada nefrectomia do rim esquerdo. Na cirurgia o rim esquerdo estava aumentado e com consistênciacística, sem áreas de parênquima normal, com ureter dilatado e grande quantidade de secreção purulenta espessa e esverdeada. No examemicroscópico foram vistos glomérulos retraídos, atrofia tubular, intenso infiltrado inflamatório misto no interstício e áreas abscedadas atingindo inclusivea pelve renal. A paciente apresentou evolução favorável, recebendo alta com função renal normal e sem complicações no seguimento.

We report the case of a 34 years-old woman who had episodes of renal colic and a diagnosis of renal calculi. One month before admission she notedexacerbation of left-side lumbar pain, which irradiated to genital region, dysuria, polacyuria, urinary urgency and high degree fever, with chills. Treatmentwas started with Ciprofloxacin, but she had no clinical improvement and was admitted to investigation. At physical examination she was pale, tachycardicand febrile. Her abdomen was tender, with a palpable mass on left hypochondrium. The laboratorial tests showed hemoglobin 6.5g/dL, white blood cells17100/mm3, platelets 656,000/mm3, and creatinine 1.0mg/dL. The abdominal ultrasound showed left-side nephrolitiasis and hydronephrosis. It wasperformed left nephrectomy. The surgical description was: left kidney with increased size, with cystic consistence, without areas of normal parenchyma, withdilated ureter and large amount of thick and greenish secretion. At microscopic examination, protracted glomeruli, tubular atrophy and intense interstitialinflammatory infiltrate were observed, with areas of abscesses reaching renal pelvis. The patient had a favorable course and was dismissed with a normalrenal function. She did not present any complication during the follow-up.

A Case of Nephrocolic Fistula Associated with Staghorn Calculi / 대한신장학회잡지

A nephrocolic fistula is uncommon complication resulting from chronic inflammatory processes in the kidney. We report here a case of nephrocolic fistula associated with staghorn calculi. A 61-year-old female with known renal stones for three years was admitted to our hospital because of left flank pain and gross hematuria. Abdominal CT scan showed pyonephrosis with staghorn calculi in the left kidney. We performed percutaneous nephrostomy because of pelvocaliceal dilatation and high fever. Leakage of contrast dye was also detected in antegrade pyelogram, and drainage of fecal contents from nephrostomy was noted, suggesting fistulous formation between left kidney and colon. Clinical and laboratory findings of the patient deteriorated rapidly in spite of conservative management including antibiotics administration, so we performed nephrectomy with excision of the fistulous tract and partial colectomy. However, she showed delirium and had several attacks of generalized seizure, and she died of sepsis and multiple organ failure on the 33rd hospital day. In conclusion, when a nephrocolic fistula develops in patient with renal stone, prompt investigation and appropriate surgical treatment should be considered to improve the clinical outcome.

Early detection and treatment of pyonephresis(report of 41 cases) / 中华泌尿外科杂志

Objective To improve the level of early detection and treatment of pyonephrosis. Methods This study included 41 cases(17 men and 24 women;mean age,49 years)of pyonephrosis.A variety of examinations,including urinary analysis,blood analysis,kidney nuclear medicine scan,ultrasonog- raphy,intravenous urography(IVU),and CT were used for the early diagnosis of pyonephrosis.Pereutaneous nephrostomy(PCN)drainage was done for the interim management of pyonephrosis,then phase 2 operation was performed in 28 cases.The double-J tube was placed in ureter by ureteroscope for drainage,and then phase 2 operation was done in 2 cases.Emergency operation was done in 10 cases.The remaining 1 case un- derwent ESWL after anti-infective therapy.Results Definite diagnosis of pyonephrosis before operation was made by invasive examinations in 31 cases(75.6%),and by percutaneous drainage in 4 cases;the other 6 cases were detected during operation.Only 6 cases(14.6%)underwent nephrectomy;the other 35 cases (85.4%)underwent kidney-sparing operation.Follow-up of 3 months to 9 years was available in 37 cases. No nephrectomy was needed in 33 cases with spared kidney.Serum creatinine was normal in the 4 cases un- dergoing nephrectomy.Conclusions The key to the treatment of pyonephrosis by kidney-sparing surgery is early diagnosis,timely drainage and relief of obstruction.Ultrasonography plays an important role in the early diagnosis of pyonephrosis,and CT has a high sensibility in the diagnosis.Pereutaneons nephrolithotomy (PCNL)secondary to drainage through pereutaneous nephrostomy was beneficial to the patients with kidney stones or upper ureter stones.

Gouty neuropathy

Gout produces not only an arthritis but also a form of kidney disease. Studies by Thannhauser show that the defect lies in the metabolic transport of uric acid in the kidneys, in which there is increased reabsorption of uric acid leading to hyperuricemia and deposition of urates.(Summary)

A Case of Sarcomatoid Renal Cell Carcinoma with Multiple Renal Stones and Pyonephrosis / 대한비뇨기과학회지

Sarcomatoid renal cell carcinoma is uncommon and constitutes approximately 1.0% to 1.5% of all renal parenchymal tumors. Renal tumors that consist of epithelial and sarcomatoid components were called Sarcomatoid renal cell carcinomas. Its distinction from other morphological variants of renal cell carcinoma is significant, because it has been shown to have a much poorer prognosis than the purely epithelial tumors. The diagnosis of sarcomatoid renal cell carcinoma is usually made when epithelial and sarcomatoid components are mixed in nephrectomy specimen. A case of sarcomatoid renal cell carcinoma is herein presented in a 77 year-old women. she complained right flank pain and high fever for 3 days, radical nephrectomy was performed and diagnosis was made by H-E stains and immunohistochemical stains of nephrectomy specimen. A brief review about sarcomatoid renal cell carcinoma is made.