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How reliable is routine lumbar spine MRI for detection of renal cysts? Correlation with abdominal CT

 Hee Woo Cho  ;  Young Han Lee  ;  Soo Yoon Chung  ;  Jin-Oh Park  ;  Jin-Suck Suh 
 ACTA RADIOLOGICA, Vol.57(4) : 494-499, 2016 
Journal Title
Issue Date
Adult ; Aged ; Aged, 80 and over ; Cysts/diagnostic imaging ; Cysts/pathology* ; Female ; Humans ; Kidney/diagnostic imaging ; Kidney/pathology ; Kidney Diseases/diagnostic imaging ; Kidney Diseases/pathology* ; Lumbar Vertebrae/diagnostic imaging ; Lumbar Vertebrae/pathology ; Magnetic Resonance Imaging* ; Male ; Middle Aged ; Radiography, Abdominal* ; Reproducibility of Results ; Retrospective Studies ; Tomography, X-Ray Computed*
Lumbar spine ; computed tomography (CT) ; magnetic resonance imaging (MRI) ; renal cyst
BACKGROUND: Incidental renal cysts are a very common finding in routine lumbar spine magnetic resonance imaging (MRI). However, there is no report of the renal cyst detection rate on routine lumbar spine MRI.
PURPOSE: To determine the renal cyst detection rate in routine lumbar spine MRI based on findings of abdominal computed tomography (CT), and to investigate if the largest renal cyst seen by abdominal CT could be also detected by routine lumbar spine MRI.
MATERIAL AND METHODS: A retrospective study was conducted of 70 patients who underwent both routine lumbar spine MRI and abdominal CT between December 2011 and January 2014. The detection rate of all renal cysts>5 mm as well as the largest renal cyst seen by abdominal CT were assessed in routine lumbar spine MRI.
RESULTS: On routine lumbar spine MRI, the detection rate of renal cysts was 46.5% (73/157) for>5-mm renal cysts and 68.0% (34/50) for>10-mm renal cysts, correlating with abdominal CT. The detection rate of the largest renal cyst seen by abdominal CT was 60.0% (27/45). Non-detection of the largest renal cyst could be caused by upper positioning (n = 7), lateral positioning (n = 6), or relatively small cyst size (n = 5).
CONCLUSION: Approximately half of renal cysts>5 mm and two-thirds of renal cysts>10 mm were detected on routine lumbar spine MRI. However, radiologists should be aware that kidney lesions may not be included in the scan coverage of routine lumbar spine MRI.
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1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Park, Jin Oh(박진오)
Suh, Jin Suck(서진석) ORCID logo https://orcid.org/0000-0001-9455-9240
Lee, Young Han(이영한) ORCID logo https://orcid.org/0000-0002-5602-391X
Chung, Soo Yoon(정수윤) ORCID logo https://orcid.org/0000-0002-6751-7288
Cho, Hee Woo(조희우) ORCID logo https://orcid.org/0000-0002-5079-6954
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