Age-related occurrence of simple renal cysts studied by ultrasonography

Yamagishi, Fumio; Kitahara, Naoto; Mogi, Wataru; Itoh, Shinichi

doi:10.1007/bf01737941

Cited by 17 publications

(17 citation statements)

References 6 publications

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“…The prevalence of cysts was similar to that reported in prior CT surveys [2,4] and the strong association with age is consistent with previous reports [1][2][3][4][5]. The predilection for males was not as strong but is also consistent with previous reports [1,[3][4][5]. The novel finding in this study is the reduced renal function in patients with simple cysts.…”

Section: Discussionsupporting

confidence: 94%

“…They are rarely observed before age 30 years and their incidence increases dramatically after age 50 years [1][2][3][4][5]. Cysts are also more common in males [1,[3][4][5]. However, little else is known about sporadic cysts and, unless they exhibit some anatomic complexity, they are generally ignored and considered to have no clinical significance.…”

mentioning

confidence: 98%

“…These sporadic cysts are assumed to be acquired although a familial occurrence has never been investigated. They are rarely observed before age 30 years and their incidence increases dramatically after age 50 years [1][2][3][4][5]. Cysts are also more common in males [1,[3][4][5].…”

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confidence: 99%

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Reduced renal function in patients with simple renal cysts

Al-Said¹,

Brumback²,

Moghazi³

et al. 2004

Kidney International

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The presence of kidney cysts, even single cysts, is associated with reduced renal function in hospitalized patients younger than 60 years. This relationship may be obscured by the reduced renal function and the high incidence of cysts in older patients. These results suggest that acquired cystic kidney disease may begin early in the course of renal disease and that underlying renal disease should be considered in individuals with renal cysts prior to age 60 years.

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Section: Discussionsupporting

confidence: 94%

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confidence: 98%

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Reduced renal function in patients with simple renal cysts

Al-Said¹,

Brumback²,

Moghazi³

et al. 2004

Kidney International

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“…Evidence in favour of this is the age dependency observed in this and other studies (Laucks et al, 1981;Yamagishi et al, 1988;McHugh et al, 1991). Furthermore, microdissection has demonstrated an increasing number of diverticula on the distal tubule with age (Beart & Steg, 1977a).…”

Section: Discussionmentioning

confidence: 86%

“…Simple renal cysts are very rare before age 40, but become increasingly common with growing age (Laucks et al, 1981;Yamagishi et al, 1988;McHugh et al, 1991). Arterial blood pressure (BP) also increases with age, and there is some evidence, mostly derived from case reports (Luscher et al, 1986), of a causal relationship between simple renal cysts and hypertension.…”

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confidence: 97%

Simple renal cyst: relations to age and arterial blood pressure

Pedersen

Emamian²,

Nielsen³

1993

The British Journal of Radiology

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Simple renal cysts are increasingly common with increasing age, as is elevated arterial blood pressure. We studied the natural history of simple renal cysts, and their possible association with arterial hypertension. Renal sonography was performed in an age- and sex-stratified random sample of 686 healthy volunteers aged 30-70 years. Eleven examinations were excluded for various reasons. One or more renal cysts measuring 10-47 mm were found in 35 individuals. The prevalence of simple renal cysts was 5.2%, ranging from 0% at age 30 to 9.7% at age 70. From the cross-sectional data it is estimated that the average renal cyst needs about 10 years to reach 20 mm in size. Mean arterial blood pressure increased with age, and was significantly higher in individuals with cysts (p = 0.0055). Closer analysis showed that the association was confined to and even stronger (p = 0.00066) for individuals with at least one cyst < or = 20 mm. We assume that smaller cysts are more likely to be totally intraparenchymal, and therefore more able to create an internal hydrostatic pressure and thus to compress the surrounding renal tissue.

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Increased prevalence of simple renal cysts in patients with gout

et al. 2012

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The aim of this study was to determine the prevalence of simple renal cysts in gout patients and evaluate associated risk factors for its development. Hundred and forty-six patients followed at our outpatient Gout Unit and 47 sex- and age-matched healthy kidney donors who had undergone routine renal ultrasonography, using a static gray scale and real-time B-mode units with a 3.5- or 5.0-MHz transducer, were evaluated for the presence of renal cysts. Demographic and clinical characteristics of gout patients were evaluated considering possible risk factors for the occurrence of simple renal cysts such as age, male gender, hypertension, and renal impairment. The prevalence of simple renal cyst was 26.0 % in gout patients and 10.6 % in control group (P = 0.045). Gout patients with simple renal cysts presented less renal lithiasis than those without this complication (5.2 vs 25.9 %; P = 0.003) in spite of an overall higher frequency of renal stones in gout patients compared to control group (20.5 vs. 6.3 %, P = 0.025). The presence of simple renal cyst in gout was not associated with previously reported factors such as age (P = 0.296), male predominance (P = 0.688), hypertension (P = 0.314), and renal impairment (P = 254). Moreover, no association with disease duration (P = 0.843) or tophi (P = 0.616) was observed. In conclusion, gout patients have an increased prevalence of simple renal cysts associated with a lower occurrence of nephrolithiasis. Whether renal cysts have any protective effect in the development of nephrolithiasis in gout remains to be determined.

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Age-related occurrence of simple renal cysts studied by ultrasonography

Cited by 17 publications

References 6 publications

Reduced renal function in patients with simple renal cysts

Reduced renal function in patients with simple renal cysts

Simple renal cyst: relations to age and arterial blood pressure

Increased prevalence of simple renal cysts in patients with gout

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