1/264. Transitional cell carcinoma arising in a pyelocaliceal cyst. An unusual cystic renal lesion with cytologic and imaging findings.The differentiation between benign and malignant cystic lesions of the kidney is a diagnostic challenge. Medical imaging aids in this task, but many cystic renal lesions require further work-up, frequently by computed tomography-guided fine needle aspiration. We report on the pathological findings in a case of moderately differentiated papillary transitional carcinoma, which arose in a pre-existing pyelocaliceal cyst in a 53-year-old man. In the case of this lesion, the distinction between a benign and a malignant renal cyst is blurred. To our knowledge, this is the third such occurrence to be reported and the first to be diagnosed by fine needle aspiration biopsy.- - - - - - - - - - ranking = 1keywords = kidney (Clic here for more details about this article) |
2/264. Prenatal collapse of cysts in a dysplastic kidney.Postnatal regression of prenatally or neonatally detected multicystic dysplastic kidney disease has been widely documented. However, renal cysts can regress during gestation, although they usually become larger in utero. We present a case of prenatally detected multicystic dysplastic kidney with an atypical course. During the third trimester, unilateral multicystic renal lesions in the fetus first enlarged and later involuted; by the second postpartum year, the kidney had become hypoplastic and nonfunctional. Our case also shows that before birth, blood flow in the affected kidney, measured with Doppler imaging, was normal until the cysts involuted.- - - - - - - - - - ranking = 34.02921165827keywords = kidney disease, kidney (Clic here for more details about this article) |
3/264. dialysis-associated renal cystic disease resembling autosomal dominant polycystic kidney disease: a report of two cases.Acquired renal cystic disease is common in patients receiving dialysis. Characteristically, the kidneys are small or, less often, normal in size, and the cysts are usually less than 0.6 cm in diameter. We present here 2 patients who, after 5 and 7 years on hemodialysis, developed marked renal enlargement, with large cysts in the kidneys and, in 1 patient, in the liver as well; the appearance on ultrasonography and computed tomography was indistinguishable from autosomal dominant polycystic kidney disease. Before starting dialysis the first patient was a 19-year-old man who developed renal shutdown from crescentic glomerulonephritis, and the second patient was a 33-year-old man who developed end-stage renal failure from malignant hypertension. Neither patient had renal cysts at the onset of end-stage renal failure.- - - - - - - - - - ranking = 137.14605829135keywords = kidney disease, kidney (Clic here for more details about this article) |
4/264. adult medullary cystic disease of the kidney and pancreatic cystic disease: a new association.A rare case of a woman with the adult form of medullary cystic disease associated with pancreatic cysts in pancreas divisum is described, which suggests that specific attention should be paid to computed tomography findings in the presence of pancreatic and renal cysts.- - - - - - - - - - ranking = 4keywords = kidney (Clic here for more details about this article) |
5/264. A neurodegenerative disorder with early myoclonic encephalopathy, retinal pigmentary degeneration and nephronophthisis.A female case of developmental arrest, early-onset seizures, retinal pigmentary degeneration, progressive central nervous symptoms and peripheral neuropathy, associated with progressive renal dysfunction, anemia and nephrotic syndrome, was presented. Her epileptic syndrome was possibly an early myoclonic encephalopathy, though neonatal seizures were not evident. Serial cranial MRIs showed progressive brain atrophy and a white matter change. Neuropathological examination revealed a neurodegenerative disease mainly involving the white matter with olivopontocerebellar degeneration. She also had the nephronophthisis-medullary cystic disease complex and an early stage of focal segmental glomerulosclerosis. Her grandaunts had renal diseases, one of whom died of renal failure in adolescence, and her father showed cerebellar symptoms since the middle age. All possible metabolic studies were negative. This case is similar to Senior-Loken syndrome, but distinct in terms of the severe and progressive neurological symptoms, suggestive of a new malignant syndrome with some inherent metabolic derangement affecting both the nervous system and the kidneys.- - - - - - - - - - ranking = 1keywords = kidney (Clic here for more details about this article) |
6/264. Intrarenal cystic mass with pelviureteral junction obstruction.An abdominal mass in the first year after birth most commonly originates from the kidney. Renal masses in this age group are often cystic and may be associated with other abnormalities. We describe an unusual benign unilateral cystic lesion and coexisting pelviureteral junction obstruction in a newborn male with an otherwise morphologically and functionally normal urinary tract. A near normal kidney resulted from subsequent resection of the cyst wall combined with pyeloplasty.- - - - - - - - - - ranking = 2keywords = kidney (Clic here for more details about this article) |
7/264. Standardized uptake value as an unreliable index of renal disease on fluorodeoxyglucose PET imaging.fluorine-18 2-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography has been used extensively in the diagnosis of malignant conditions with high rates of sensitivity and specificity. However, increased FDG uptake is not limited to malignant tissue. In general, lesions with a mild degree of FDG uptake as measured by standardized uptake values less than 2.0 are considered benign, whereas those with values greater than 2.5 are usually regarded as malignant. Standardized uptake values in the kidney can be as high as 22 as a result of excretion of FDG through urine. Two cases are reported in which renal abnormalities could not be distinguished from urine based on standard uptake values alone.- - - - - - - - - - ranking = 1keywords = kidney (Clic here for more details about this article) |
8/264. Acquired cystic kidney disease: rapid progression from small to enlarged kidneys simulating adult polycystic kidney disease.A 57-year-old man on chronic hemodialysis presented marked bilateral renal enlargement due to acquired cystic kidney disease (ACKD). He had been on hemodialysis for less than 3 years only (14 months prior to receiving a functional renal transplant which lasted 8 years, followed by 18 additional months of dialysis), before the diagnosis of ACKD was made following an episode of flank pain with gross hematuria. The marked changes in kidney appearance during this 11-year period were documented by serial ultrasound examination showing the kidneys to be of near-normal size before the start of dialysis (> or =10 cm in 1986), then shrunken and contracted 5 years later while having a functioning renal transplant (<5 cm in 1991), and markedly enlarged reaching the size of adult polycystic kidney disease after returning to dialysis (>13 cm in 1997). Since the risk of ACKD increases with duration of dialysis, we sought additional predisposing factors in this unusual case and found that 2 years after renal transplantation, the patient was diagnosed with breast cancer for which he was treated with surgical excision and tamoxifen. Based on ultrasound evidence that the tamoxifen treatment preceeded the appearance of the renal cystic changes, we wonder whether this drug may have played a role in the rapid development of ACKD.- - - - - - - - - - ranking = 276.2921165827keywords = kidney disease, kidney (Clic here for more details about this article) |
9/264. Cystic renal cell carcinoma diagnosed by cystofiberscopy.A 64-year-old man suffered from hypertensive syncope and was admitted to Branch Hospital, faculty of medicine, The University of tokyo. On admission he had no symptoms; however, two renal cysts of about 5 cm in diameter were found in his left kidney. Cystofiberscopy with a thin optical fiberscope was performed in addition to puncture and cystography. Cytology revealed class I, but the wall surface of the lower cyst was uneven, fluid-filled, colloid-like and white-gray compared with that seen in the upper cyst. It was diagnosed as renal cell carcinoma (RCC) and left nephrectomy was performed (5 cm in diameter, RCC, papillary tubular, common, clear cell subtype, G2>G1, INF beta, pT2, pMx, pV0, ew(-)).- - - - - - - - - - ranking = 1keywords = kidney (Clic here for more details about this article) |
10/264. Acquired cystic kidney disease in ESRD.Acquired cystic kidney disease (ACKD) in patients undergoing dialysis has been associated with life-threatening complications. Potential malignant transformation of the cysts has prompted concern regarding the need to screen patients for ACKD. The assumed increased morbidity associated with malignant transformation has not been clearly documented in the literature and may require further long-term analysis to adequately assess. Many reports on ACKD refer to the risk for malignancy, but other complications associated with ACKD may also arise. The development of ACKD has been shown to increase with increasing time on dialysis. patients on dialysis appear to have a longer life expectancy and, consequently, more will develop ACKD. Complications related to ACKD may increase, which bolster efforts to establish specific guidelines related to the screening and management of ACKD. nephrology nurses should be aware of symptoms suggesting a complication related to ACKD and confer with the nephrologist regarding evaluation. This article will discuss implications and management related to an increasing incidence of ACKD.- - - - - - - - - - ranking = 135.14605829135keywords = kidney disease, kidney (Clic here for more details about this article) |
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