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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Diagnostic Checklist
TERMINOLOGY
Synonyms
- Renal cystic mass
Definitions
- Benign, fluid-filled nonneoplastic renal lesion not meeting criteria of simple renal cyst
- Bosniak classes II, IIF, and III
- Related to complications of simple renal cyst: Hemorrhage, infection, ischemia
- Simple and complex cysts are most common renal masses in adults (62%)
- Benign, fluid-filled nonneoplastic renal lesion not meeting criteria of simple renal cyst
IMAGING
General Features
Ultrasonographic Findings
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Qiu X et al: How does contrast-enhanced ultrasonography influence Bosniak classification for complex cystic renal mass compared with conventional ultrasonography? Medicine (Baltimore). 99(7):e19190, 2020
- Arif-Tiwari H et al: Classification and diagnosis of cystic renal tumors: role of MR imaging versus contrast-enhanced ultrasound. Magn Reson Imaging Clin N Am. 27(1):33-44, 2019
- Silverman SG et al: Bosniak classification of cystic renal masses, version 2019: an update proposal and needs assessment. Radiology. 292(2):475-88, 2019
- Bertolotto M et al: Contrast-enhanced ultrasound for characterizing renal masses. Eur J Radiol. 105:41-8, 2018
- Barr RG: Is there a need to modify the Bosniak renal mass classification with the addition of contrast-enhanced sonography? J Ultrasound Med. 36(5):865-8, 2017
- Nicolau C et al: Prospective evaluation of CT indeterminate renal masses using US and contrast-enhanced ultrasound. Abdom Imaging. 40(3):542-51, 2015
- Wood CG 3rd et al: CT and MR imaging for evaluation of cystic renal lesions and diseases. Radiographics. 35(1):125-41, 2015
- Barr RG et al: Evaluation of indeterminate renal masses with contrast-enhanced US: a diagnostic performance study. Radiology. 271(1):133-42, 2014
- Cokkinos DD et al: Contrast enhanced ultrasound of the kidneys: what is it capable of? Biomed Res Int. 2013:595873, 2013
- McArthur C et al: Current and potential renal applications of contrast-enhanced ultrasound. Clin Radiol. 67(9):909-22, 2012
- Quaia E et al: Comparison of contrast-enhanced sonography with unenhanced sonography and contrast-enhanced CT in the diagnosis of malignancy in complex cystic renal masses. AJR Am J Roentgenol. 191(4):1239-49, 2008
- Park BK et al: Assessment of cystic renal masses based on Bosniak classification: comparison of CT and contrast-enhanced US. Eur J Radiol. 61(2):310-4, 2007
- Israel GM et al: An update of the Bosniak renal cyst classification system. Urology. 66(3):484-8, 2005
- Hartman DS et al: From the RSNA refresher courses: a practical approach to the cystic renal mass. Radiographics. 24 Suppl 1:S101-15, 2004
- Laven BA et al: Malignant B-cell lymphoma in renal cyst wall. Urology. 64(3):590, 2004
- Ho VB et al: Renal masses: quantitative assessment of enhancement with dynamic MR imaging. Radiology. 224(3):695-700, 2002
- Jamis-Dow CA et al: Small (< or = 3-cm) renal masses: detection with CT versus US and pathologic correlation. Radiology. 198(3):785-8, 1996
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Diagnostic Checklist
TERMINOLOGY
Synonyms
- Renal cystic mass
Definitions
- Benign, fluid-filled nonneoplastic renal lesion not meeting criteria of simple renal cyst
- Bosniak classes II, IIF, and III
- Related to complications of simple renal cyst: Hemorrhage, infection, ischemia
- Simple and complex cysts are most common renal masses in adults (62%)
- Benign, fluid-filled nonneoplastic renal lesion not meeting criteria of simple renal cyst
IMAGING
General Features
Ultrasonographic Findings
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Qiu X et al: How does contrast-enhanced ultrasonography influence Bosniak classification for complex cystic renal mass compared with conventional ultrasonography? Medicine (Baltimore). 99(7):e19190, 2020
- Arif-Tiwari H et al: Classification and diagnosis of cystic renal tumors: role of MR imaging versus contrast-enhanced ultrasound. Magn Reson Imaging Clin N Am. 27(1):33-44, 2019
- Silverman SG et al: Bosniak classification of cystic renal masses, version 2019: an update proposal and needs assessment. Radiology. 292(2):475-88, 2019
- Bertolotto M et al: Contrast-enhanced ultrasound for characterizing renal masses. Eur J Radiol. 105:41-8, 2018
- Barr RG: Is there a need to modify the Bosniak renal mass classification with the addition of contrast-enhanced sonography? J Ultrasound Med. 36(5):865-8, 2017
- Nicolau C et al: Prospective evaluation of CT indeterminate renal masses using US and contrast-enhanced ultrasound. Abdom Imaging. 40(3):542-51, 2015
- Wood CG 3rd et al: CT and MR imaging for evaluation of cystic renal lesions and diseases. Radiographics. 35(1):125-41, 2015
- Barr RG et al: Evaluation of indeterminate renal masses with contrast-enhanced US: a diagnostic performance study. Radiology. 271(1):133-42, 2014
- Cokkinos DD et al: Contrast enhanced ultrasound of the kidneys: what is it capable of? Biomed Res Int. 2013:595873, 2013
- McArthur C et al: Current and potential renal applications of contrast-enhanced ultrasound. Clin Radiol. 67(9):909-22, 2012
- Quaia E et al: Comparison of contrast-enhanced sonography with unenhanced sonography and contrast-enhanced CT in the diagnosis of malignancy in complex cystic renal masses. AJR Am J Roentgenol. 191(4):1239-49, 2008
- Park BK et al: Assessment of cystic renal masses based on Bosniak classification: comparison of CT and contrast-enhanced US. Eur J Radiol. 61(2):310-4, 2007
- Israel GM et al: An update of the Bosniak renal cyst classification system. Urology. 66(3):484-8, 2005
- Hartman DS et al: From the RSNA refresher courses: a practical approach to the cystic renal mass. Radiographics. 24 Suppl 1:S101-15, 2004
- Laven BA et al: Malignant B-cell lymphoma in renal cyst wall. Urology. 64(3):590, 2004
- Ho VB et al: Renal masses: quantitative assessment of enhancement with dynamic MR imaging. Radiology. 224(3):695-700, 2002
- Jamis-Dow CA et al: Small (< or = 3-cm) renal masses: detection with CT versus US and pathologic correlation. Radiology. 198(3):785-8, 1996
