The Experts below are selected from a list of 477 Experts worldwide ranked by ideXlab platform
M.c. Parkinson - One of the best experts on this subject based on the ideXlab platform.
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Lesions produced by the Extravasation of Urine from the upper urinary tract.
Histopathology, 1997Co-Authors: R.a. Carr, J. Newman, G.n. Antonakopulos, M.c. ParkinsonAbstract:We present six cases which illustrate the spectrum of clinical features, macroscopic findings and light microscopic findings of Urine Extravasation from the upper urinary tract. The early lesions are characterized macroscopically by an oedematous, glistening or gelatinous appearance to the renal perihilar and peripelvic fat. Light microscopically there is lipolysis with associated foamy macrophages, multinucleate giant cells and lymphocytes. Immunohistochemical staining for Tamm-Horsfall protein is strongly positive in the extracellular space and in the foamy macrophages confirming Urine Extravasation. Later lesions are characterized by cicatrization of fibrous tissue around the renal pelvis and hydronephrosis. Microscopically there is relatively bland fibrosis with occasional lymphocytes and histiocytic cells. The late lesions are also characterized by extracellular deposits of weakly eosinophilic, granular or hyaline material, the so called 'urinary precipitates'. These deposits stain strongly with diastase PAS and weakly positive for Tamm-Horsfall protein. The staining of these urinary precipitates is analogous to renal tubular hyaline casts, thus supporting the theory that they are derived from uroproteins. We consider that these deposits are pathognomic of past Urine Extravasation.
Shigehiko Koga - One of the best experts on this subject based on the ideXlab platform.
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spontaneous peripelvic Extravasation of Urine due to an inflammatory aneurysm of the abdominal aorta
International Journal of Urology, 2004Co-Authors: Kenichi Mori, Shigehiko Koga, Mitsuru Noguchi, Hiroshi Kanetake, Hisao Suda, S YamashitaAbstract:A 71-year-old man presented complaining of severe left flank pain. A computed tomography scan of the abdomen disclosed a left peripelvic Extravasation of Urine and a 4.0-cm abdominal aortic aneurysm with a significant amount of perianeurysmal thickening and prominent left hydroureter. The patient was diagnosed as having an inflammatory aneurysm of the abdominal aorta (IAAA) with peripelvic Extravasations of Urine. We report the results of a patient with IAAA with ureteral obstruction successfully treated with steroid therapy and a ureteral stent.
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spontaneous peripelvic Extravasation of Urine
International Urology and Nephrology, 1992Co-Authors: Shigehiko Koga, Y Arakaki, M Matsuoka, C OhyamaAbstract:Spontaneous peripelvic Extravasation of Urine is relatively uncommon. We experienced 11 cases of spontaneous peripelvic Extravasation. Urinary obstruction was caused by calculi in 9 cases, invasion by sigmoid carcinoma in 1 case and ureteral tumour (transitional cell carcinoma) in 1. Six patients presented with signs of peritonitis and 4 out of 9 with calculus did not develop microhaematuria. It is important to differentiate peripelvic Extravasation from other acute abdominal conditions. We must pay special attention to patients with signs of peritonitis and normal urinalysis.
Luigi Selvaggi - One of the best experts on this subject based on the ideXlab platform.
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calyceal rupture and perirenal urinoma as a presenting sign of recurrent ovarian cancer
Gynecologic Oncology, 2001Co-Authors: Gennaro Cormio, Luigi Cormio, Giuseppe Di Gesu, Giuseppe Loverro, Luigi SelvaggiAbstract:Abstract Background. Rupture of the urinary collecting system with peripelvic Extravasation of Urine is an uncommon pathologic condition usually associated with ureteral obstruction from calculi. Case. We report a patient with calyceal rupture and peripelvic Extravasation of Urine secondary to distal ureteral obstruction by recurrent ovarian carcinoma. Diagnosis was established with computed tomography and renal scans. Placement of an indwelling ureteral stent via a nephrostomy resolved the urinoma. Conclusion. Gynecologic oncologists should be aware that calyceal rupture is a potential complication of gynecologic malignancy. Causes of perirenal urinary Extravasation and approaches to diagnosis and management are reviewed.
R.a. Carr - One of the best experts on this subject based on the ideXlab platform.
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Lesions produced by the Extravasation of Urine from the upper urinary tract.
Histopathology, 1997Co-Authors: R.a. Carr, J. Newman, G.n. Antonakopulos, M.c. ParkinsonAbstract:We present six cases which illustrate the spectrum of clinical features, macroscopic findings and light microscopic findings of Urine Extravasation from the upper urinary tract. The early lesions are characterized macroscopically by an oedematous, glistening or gelatinous appearance to the renal perihilar and peripelvic fat. Light microscopically there is lipolysis with associated foamy macrophages, multinucleate giant cells and lymphocytes. Immunohistochemical staining for Tamm-Horsfall protein is strongly positive in the extracellular space and in the foamy macrophages confirming Urine Extravasation. Later lesions are characterized by cicatrization of fibrous tissue around the renal pelvis and hydronephrosis. Microscopically there is relatively bland fibrosis with occasional lymphocytes and histiocytic cells. The late lesions are also characterized by extracellular deposits of weakly eosinophilic, granular or hyaline material, the so called 'urinary precipitates'. These deposits stain strongly with diastase PAS and weakly positive for Tamm-Horsfall protein. The staining of these urinary precipitates is analogous to renal tubular hyaline casts, thus supporting the theory that they are derived from uroproteins. We consider that these deposits are pathognomic of past Urine Extravasation.
S Yamashita - One of the best experts on this subject based on the ideXlab platform.
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spontaneous peripelvic Extravasation of Urine due to an inflammatory aneurysm of the abdominal aorta
International Journal of Urology, 2004Co-Authors: Kenichi Mori, Shigehiko Koga, Mitsuru Noguchi, Hiroshi Kanetake, Hisao Suda, S YamashitaAbstract:A 71-year-old man presented complaining of severe left flank pain. A computed tomography scan of the abdomen disclosed a left peripelvic Extravasation of Urine and a 4.0-cm abdominal aortic aneurysm with a significant amount of perianeurysmal thickening and prominent left hydroureter. The patient was diagnosed as having an inflammatory aneurysm of the abdominal aorta (IAAA) with peripelvic Extravasations of Urine. We report the results of a patient with IAAA with ureteral obstruction successfully treated with steroid therapy and a ureteral stent.
