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MINERVA UROLOGICA E NEFROLOGICA
Rivista di Nefrologia e Urologia
Indexed/Abstracted in: EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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Minerva Urologica e Nefrologica 2014 June;66(2):107-12
Renal papillary attenuation differences between primary and recurrent idiopathic calcium stone disease patients
Cakiroglu B. 1, Eyyupoglu S. E. 2, Tas T. 3, Esen T. 4, Acar O. 5, Aksoy S. H. 6 ✉
1 Hisar Intercontinental Hospital, Deparment of Urology, Umraniye Istanbul, Turkey;
2 Amasya Training and Research Hospital, Deparment of Urology, Amasya, Turkey;
3 Taksim Training and Research Hospital, Deparment of Urology, Taksim, Istanbul, Turkey;
4 Koc University, School of Medicine, Rumelifeneri Yolu, Istanbul, Turkey;
5 VKF American Hospital, Department of Urology, Nisantasi, Istanbul, Turkey;
6 Hisar Intercontinental Hospital, Deparment of Radiology, Umraniye, Istanbul, Turkey
AIM: The aim of this paper was to investigate whether renal papillae of patients with nephrolithiasis are more radiodense than that of control patients and to evaluate the predictability of urolithiasis using papillary density differences between stone and non-stone formers.
METHODS: Renal papillary Hounsfield Unit (HU) measurements were conducted at the level of upper pole, middle region and lower pole of both kidneys in a total of 126 primary (group 1), 133 recurrent (group 2) stone disease patients and 108 controls (group 3).
RESULT: Mean patient age did not differ significantly between groups (P>0.05). Mean stone diameters (±SD) were 5.0±3.1 mm (3-9 mm) and 6.1±3.3 mm (3-15 mm) for primary and recurrent groups, respectively and group distributions and variances were similar (P>0.05). Mean papillary attenuation values (±SD) were 27.26±9.30 (4.00-56.00) in group 1, 30.42±9.88 (12.00-64.00) in group 2 and 25.83±2.72 (20.30-32.56) in the control group. The difference between the mean papillary attenuation value of the primary stone disease group and the control group was statistically insignificant (P=0.104). When the control group and the recurrent stone group was compared without variances, in terms of the mean renal papillary attenuation value, a statistical significance was achieved (P=0.000).
CONCLUSION: With increasing renal papillary HU values, the risk of recurrent calcium stone disease is increased.