11/29. Xanthogranulomatous oophoritis: an inflammatory pseudotumor of the ovary.A case of xanthogranulomatous oophoritis is presented. The patient is a 26-year-old woman who had a 10-year history of pelvic inflammatory disease. The pathogenesis of this lesion appears similar to that of xanthogranulomatous pyelonephritis. Ultrastructural findings are presented and xanthogranulomatous lesions of the female genital tract are reviewed.- - - - - - - - - - ranking = 1keywords = pyelonephritis (Clic here for more details about this article) |
12/29. Computed tomography in xanthogranulomatous pyelonephritis.Two cases of xanthogranulomatous pyelonephritis (XGP) examined preoperatively by computed tomography are reported. In one, preoperative diagnosis of an inflammatory abscess-forming disease was possible. Several features of computed tomography in XGP permit differentiation from renal carcinoma. Global renal enlargement, the presence of calculi, the spread of infiltration into the fatty capsule with thickening of Gerota's fascia, and the characteristic density differences between cortex and medulla as a result of reduced contrast medium concentrations in the pyramids are suspicious of this special form of interstitial nephritis.- - - - - - - - - - ranking = 5keywords = pyelonephritis (Clic here for more details about this article) |
13/29. CT of xanthogranulomatous pyelonephritis: radiologic-pathologic correlation.A clinical-radiologic-pathologic correlation study was performed in 18 (17 female) patients with xanthogranulomatous pyelonephritis (XGP) with CT scans available for analysis. Presenting signs and symptoms included pain (66%), urinary frequency (66%), dysuria (66%), nocturia (66%), palpable mass (56%), leukocytosis (50%), and fever (50%). The duration of symptoms was usually relatively short (less than 6 months), considering the extent of the pathologic process. In 14 patients, the disease was diffuse; the kidney was enlarged with preservation of the reniform outline in 13. The renal pelvis, lined with sheets of lipid-laden macrophages and surrounded by a marked fibrotic reaction, was contracted in 11 and contained pelvic calculi in 12. The parenchyma was replaced by multiple, rounded, low-density areas on CT that corresponded to dilated calices and/or inflammatory tissue. These areas had enhancing rims (10 cases) that corresponded to preserved, compressed normal parenchyma and/or inflammatory tissue. There was CT identification of unsuspected extension through the renal capsule with involvement of the perirenal space in 11 patients, the pararenal spaces in 13, and the psoas muscle in six. The pararenal space and the psoas muscle were often extensively involved with minimal perirenal disease in six patients, a reflection of chronic indolent infection. There were four cases of focal XGP that appeared on CT as low-density mass lesions with wall enhancement surrounding dilated, stone-filled calices or as focal masses occupying one pole of a duplication. Extensive pararenal disease was present in two of the four cases of focal XGP. The preoperative diagnosis of XGP was suspected in only 44% of cases. It is concluded that CT should play a role in diagnosis and preoperative planning to demonstrate the extent of extrarenal disease that is poorly depicted by other means.- - - - - - - - - - ranking = 5keywords = pyelonephritis (Clic here for more details about this article) |
14/29. association of xanthogranulomatous pyelonephritis with small renal cell carcinoma. Case report and review of the literature.A case of xanthogranulomatous pyelonephritis associated with 'small' renal carcinoma is presented. The urinary sediment showed atypical cells, suspect of malignancy. The renal neoplasm measured only 1.5 cm, had the typical papillary configuration of a 'small' renal carcinoma and was composed of atypical cells with finely granular cytoplasm and hyperchromatic nuclei. The xanthogranulomatous pyelonephritis was a primary lesion, spacially separate one from the other. The clinicopathological features of reported examples of coexistence of these diseases have been reviewed.- - - - - - - - - - ranking = 6keywords = pyelonephritis (Clic here for more details about this article) |
15/29. Atypical presentation of xanthogranulomatous pyelonephritis: diagnosis by ultrasonography and fine needle aspiration biopsy.The diagnosis of xanthogranulomatous pyelonephritis may be difficult to make preoperatively. We describe a patient who had a nonfunctioning kidney with a normal collecting system on retrograde pyelography as well as normal angiography and venography. Preoperative diagnosis was xanthogranulomatous pyelonephritis by fine needle aspiration biopsy under ultrasonic guidance.- - - - - - - - - - ranking = 6keywords = pyelonephritis (Clic here for more details about this article) |
16/29. Sonographic features of xanthogranulomatous pyelonephritis.The ultrasonic findings of three patients with surgically confirmed xanthogranulomatous pyelonephritis are presented. All of the involved kidneys were markedly enlarged, had a large central echogenic area, and demonstrated an increased parenchymal anechoic pattern. The appearance correlated well with the other radiographic and gross pathologic findings. While this appearance was fairly distinctive, it is anticipated that there will be some difficulty in distinguishing this entity from simple hydronephorsis, especially in conjunction with staghorn calculus. It is also anticipated that focal xanthogranulomatous pyelonephritis will have an atypical appearance.- - - - - - - - - - ranking = 6keywords = pyelonephritis (Clic here for more details about this article) |
17/29. Xanthogranulomatous pyelonephritis with renocolic fistula and coexistent contralateral renal carcinoma.The presence of contralateral renal tumour in a case eventually found to have Xanthogranulomatous pyelonephritis (XP) resulted in a wrong preoperative diagnosis of tumour with bowel fistula. The patient's prior history of bladder tumour and multiple renal cysts is also discussed, along with the retrospective finding of very minor changes in an early angiogram.- - - - - - - - - - ranking = 4keywords = pyelonephritis (Clic here for more details about this article) |
18/29. Renal carcinoma with staghorn calculus, perinephric abscess, and xanthogranulomatous pyelonephritis in same kidney. Subcutaneous abscess of thigh as initial presentation.A case is reported of the simultaneous occurrence of renal carcinoma with staghorn calculus, perinephric abscess, and xanthogranulomatous pyelonephritis in the same kidney, with subcutaneous abscess of the thigh as the initial presentation. The coexistence of these diseases in the same kidney would seem to be important since they are frequently confused with each other.- - - - - - - - - - ranking = 5keywords = pyelonephritis (Clic here for more details about this article) |
19/29. Computerized tomography in xanthogranulomatous pyelonephritis.Computerized tomography offers the means to recognize changes in the kidney associated with xanthogranulomatous pyelonephritis. The preoperative extent of the inflammatory process, reaction of adjacent parenchymal structures, and extension to the muscles and abdominal wall are identifiable on computerized tomography. The presence of obstructing renal stones, thickening of the perirenal fascia and inability of the kidney to handle intravenously injected contrast medium can be assessed with computerized tomography. Low density renal areas measured on computerized tomography may indicate lipid infiltration of the kidney or incorporation of the fat of the renal bed into the tumefactive mass.- - - - - - - - - - ranking = 5keywords = pyelonephritis (Clic here for more details about this article) |
20/29. Xanthogranulomatous cholecystitis: case report and review of the literature.We studied a case of xanthogranulomatous cholecystitis, an entity rarely described in English-language literature. Our lesion is unique with regard to the extent of involvement. It is characterized grossly by a markedly thickened gallbladder wall that is yellowish and granular. Microscopically, the gallbladder was diffusely infiltrated by foamy macrophages that contained lipofuscin, lipid material, and bile pigment, features corroborated by transmission electron microscopy. The origin and pathogenesis of xanthogranulomatous cholecystitis was reviewed. We postulate that, in the presence of obstruction and bile stasis, the combination of inflammation, tissue necrosis, and bile extravasation will lead to formation of xanthogranulomas similar to that produced in experimental pyelonephritis.- - - - - - - - - - ranking = 1keywords = pyelonephritis (Clic here for more details about this article) |
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