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Emphysematous pyelonephritis is a rare, severe gas-forming infection of the kidney. Herein we report a case of a 51-year-old man who had received a cadaveric renal transplant 12 years ago. Post-transplant diabetes mellitus occurred 8 years later. He experienced urinary tract infection with graft pain one week before admission and presented with septic shock at the emergency room. Plain X-ray of the abdomen showed retroperitoneal air. A computed tomography scan of the abdomen showed retroperitoneal and extraperitoneal air being released from the graft kidney. These findings were compatible with extensive emphysematous pyelonephritis. The patient underwent percutaneous drainage. Blood culture and urine culture yielded Escherichia coli. After repeated percutaneous drainage and strong antibiotics for a prolonged period, the patient finally recovered.
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PMID:Severe emphysematous pyelonephritis in a renal allograft: successful treatment with percutaneous drainage and antibiotics. 1770 35

Emphysematous pyelonephritis (EPN) is a rare condition that typically occurs in patients with diabetes mellitus, urinary tract obstruction, or immunosuppression such as solid organ transplant recipients. It has high mortality and frequently requires nephrectomy to achieve cure, although percutaneous drainage has been reported to be successful in some patients. We report a renal transplant recipient with underlying diabetes mellitus who developed iatrogenic EPN. The patient initially presented with dyspnea and was admitted for cardiac evaluation. There was no evidence of urinary tract infection at the time of admission. The patient developed high-grade fever 3 days after admission. Despite intravenous (IV) antibiotic therapy, the patient developed acute renal failure requiring hemodialysis. Studies revealed Klebsiella bacteremia and EPN. We believe that urinary tract infection was precipitated by urinary bladder catheterization performed on the day of admission. Despite 2 weeks of IV antibiotic therapy, infection persisted with progressive extension of gas into the perinephric space on repeat imaging. The patient underwent a transplant nephrectomy with subsequent clinical recovery. This case illustrates that antibiotics alone are often inadequate to cure and preserve renal function in EPN despite immediate therapy. Furthermore, this patient underscores the risk of serious infection precipitated by urinary bladder catheterization in immunocompromised patients.
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PMID:Iatrogenic emphysematous pyelonephritis in a renal transplant patient. 1850 51

Peripartum acute renal failure is an important complication related to pregnancy leading to significant morbidity and mortality. Emphysematous pyelonephritis (EPN) is a severe necrotizing infection of the renal parenchyma, with formation of gas within the collecting system, renal parenchyma, or perirenal tissues. EPN is common in persons with diabetes or urinary tract obstruction. Herein we report a case of bilateral emphysematous pyelonephritis in a postpartum lady who had no evidence of diabetes or urinary tract obstruction. Management of this condition has traditionally been aggressive, and surgery has been considered mandatory. Our patient was managed successfully with antibiotics and supportive measures alone.
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PMID:An uncommon cause of postpartum renal failure--bilateral emphysematous pyelonephritis. 1921 18

Emphysematous pyelonephritis (EPN) is a rare but severe infectious disease. This disease sometimes presents bilaterally, making it difficult to cure. Diabetes mellitus is a common cofactor in this disease. Drainage or nephrectomy, often combined with antibiotics, is ordinarily used for treatment. To our knowledge, only 8 cases of bilateral EPN cured by antibiotics alone have been reported. We report the case of an 86-year-old woman with bilateral EPN cured by antibiotic therapy alone, thus avoiding surgery or drainage in a frail elderly patient.
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PMID:Bilateral emphysematous pyelonephritis cured by antibiotics alone: a case and literature review. 1946 82

A 49-year-old woman with poorly controlled type 2 diabetes mellitus was admitted to hospital complaining of fever, vomiting, and lower abdominal pain. Laboratory investigation revealed leukocytopenia, high blood sugar, and pyuria. Pyelonephritis was then diagnosed. Escherichia coli was isolated from blood and urinary cultures. In spite of antimicrobial therapy, the patient's condition deteriorated. A computed tomography scan of the abdomen on the second day of hospitalization revealed the presence of air in the collecting system of the left kidney. Emphysematous pyelonephritis was diagnosed, and a renoureteral catheter was promptly inserted via the left ureter into the affected pelvis of the left kidney. Imipenem, cefotiam, and levofloxacin were administered during the clinical course. This early intervention and the appropriate antimicrobial therapy were effective in resolving the infection. Urinary tract infections should be carefully managed in patients with poorly controlled diabetes mellitus.
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PMID:Emphysematous pyelonephritis successfully treated by early intervention using a renoureteral catheter. 1955 6

Emphysematous pyelonephritis (EPN) is an acute necrotizing parenchymal and peri-renal infection caused by gas-forming uropathogens. The predisposing factors are diabetes mellitus and ureteric obstruction. E. coli is the most frequently identified pathogen. The overall mortality is 43%. Computerized tomography (CT) is the imaging procedure of choice in determining the extent of infection and guiding management. Management of EPN has evolved from aggressive surgical intervention to conservative management. Although there are reports of improved renal function after medical therapy combined with relief of obstruction, most of the patients still require nephrectomy. We present a case of EPN and also evaluate the radiological features, prognosis, and current management of this disease.
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PMID:Emphysematous pyelonephritis - case report and evaluation of radiological features. 1973 85

Emphysematous pyelonephritis (EPN) is an acute necrotizing infection with gas presence in the kidney, perinephric space, and/or urinary collecting system that carries a bad prognosis. Some clinical conditions predispose to this entity, such as diabetes mellitus, urinary tract obstruction, and immune-incompetence. Immediate resuscitation, broad-spectrum antibiotics, percutaneous and surgical drainage, and emergent and delayed nephrectomy are therapeutic options that should be applied in a timely fashion. We report our experience of four patients with EPN. Two of the patients were kidney transplant recipients, one patient had bilateral urolithiasis, and one patient was an elderly patient with debilitated general condition and an abdominal mass that could not be defined. Late transplant nephrectomy was performed in one patient, and three patients were treated conservatively. Three patients died, including the patient who had transplant nephrectomy. One patient who presented with lithiasis showed a remarkable recovery with conservative management. The bacteria involved were E. Coli and a resistant Klebsiella. We conclude that EPN is a life-threatening condition that carries a bad prognosis. Early diagnosis is essential for a positive outcome. Therapeutic measures should be applied immediately after diagnosis. An aggressive approach including nephrectomy may be emergently required.
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PMID:Emphysematous pyelonephritis: a case report series of four patients with review of literature. 1983 58

Emphysematous pyelonephritis is a life-threatening infection especially seen in patients with poorly-controlled diabetes mellitus. Imaging modalities (preferably computed tomography) are required to establish the diagnosis. Treatment modalities include volume resuscitation, broad-spectrum antibiotics, percutaneous drainage, and, as a last resort, nephrectomy. We present a case of a 46-year-old female who had hypertension and type-2 diabetes mellitus and presented with complaints of dysuria, back pain, and decreased urine output. Renal ultrasound and abdominal computerized tomography (CT) revealed air-fluid levels at each perirenal region and collecting systems, consistent with emphysematous pyelonephritis. Her clinical situation improved with vigorous fluid resuscitation and broad-spectrum antibiotic treatment.
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PMID:Culture-negative bilateral emphysematous pyelonephritis presented as acute renal failure and managed medically only. 2017 49

Emphysematous pyelonephritis (EPN) is a rare, severe, gas-forming infection for which the treatment of choice is often an immediate nephrectomy, although many reports exist of conservative treatment of cases with antibiotic therapy and percutaneous drainage of abscesses. It usually occurs in diabetic patients and less frequently in subjects with an obstruction of the corresponding renoureteral unit; other predisposing factors are not common. We report here the case of a 51 year-old woman with a rare association of unrecognized diabetes and bilateral polycystic kidney disease who developed monolateral EPN. She had an emergency right nephrectomy and was admitted to Intensive Care Unit (ICU) for septic shock after surgery, requiring intensive resuscitation. The patient was managed with Coupled Plasma Filtration Adsorption (CPFA). Her clinical conditions rapidly improved and the hemofiltration was soon suspended. Urine and blood cultures were positive for the same Escherichia coli, which was susceptible to all tested antibiotics. The patient was transferred to the Nephrology Division and was discharged from the hospital without further dialysis after 34 days. This case report is somewhat unique because of the unusual association between undetected diabetes and polycystic kidney as predisposing factors of a severe infection of the urinary tract.
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PMID:A rare association of emphysematous pyelonephritis with unrecognized diabetes and polycystic kidney. 2035 7

Emphysematous pyelonephritis (EPN) is a severe necrotizing infection of the renal parenchyma. The clinical course of EPN can be severe and life-threatening if not recognized and treated promptly. Most of the information has been from case reports, a few large series have also been reported. Using an evidence-based approach, this review describes the pathogenesis, classification, complications, and management of EPN. Emphysematous pyelonephritis (EPN) is an acute severe necrotizing infection of the renal parenchyma and its surrounding tissues that results in the presence of gas in the renal parenchyma, collecting system, or perinephric tissue. The cause for mortality in EPN is primarily due to septic complications. Up to 95% of the cases with EPN have underlying uncontrolled diabetes mellitus. The risk of developing EPN secondary to a urinary tract obstruction is about 25-40%. There are three classifications of EPN based on radiological findings. Acute renal failure, microscopic or macroscopic haematuria, severe proteinuria are other positive findings in EPN. Escherichia coli is the most common causative pathogen with the organism isolated on urine or pus cultures in nearly 70% of the reported cases. A plain radiograph shows an abnormal gas shadow in the renal bed raising the suspicion whereas an ultrasound scan or computed tomography (CT) will confirm the presence of intra-renal gas thus supporting the diagnosis of EPN. Gas may extend beyond the site of inflammation to the sub capsular, perinephric and pararenal spaces. In some cases, gas was found to be extending into the scrotal sac and spermatic cord. Subsequent case studies have shown patients being successfully treated with PCD when used in addition to medical management, with significant reduction in the morality rates. PCD should be performed on patients who have localized areas of gas and functioning renal tissue is present. The treatment strategies include MM alone, PCD plus MM, MM plus emergency nephrectomy, and PCD plus MM plus emergency nephrectomy. In small proportion of patients managed with MM and PCD, subsequent nephrectomy will be required and in these patients the reported mortality is 6.6% Nephrectomy in patients with EPN can be simple, radical or laparoscopic.
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PMID:Emphysematous pyelonephritis. 2084 Mar 27


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