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Insights into Imaging

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Open Access 01-08-2013 | Original Article

Evaluation of Bosniak category IIF complex renal cysts

Authors: Ole Graumann, Susanne Sloth Osther, Jens Karstoft, Arne Hørlyck, Palle Jörn Sloth Osther

Published in: Insights into Imaging | Issue 4/2013

Abstract

Purpose

To evaluate moderately complex renal cysts of Bosniak category IIF.

Materials and methods

The regional ethics committee approved the study. In the period 2003–2009, radiological CT reports of 8,402 CT examinations of the kidneys were analysed retrospectively by one radiologist. All complex cystic lesions in the kidney (n = 550 in the same number of patients) were reclassified according to the Bosniak classification by two radiologists in consensus. If a patient had more than one lesion, only the highest Bosniak category was recorded. All Bosniak IIF lesions with ≥2-year follow-up were included in the study.

Results

Thirty-two Bosniak IIF lesions were found. Five lesions (16 %) were upgraded during follow-up and the patients were offered surgery. Pathology of three lesions showed papillary carcinoma, clear cell renal carcinoma and chronic inflammation, respectively. Due to comorbidity the remaining two patients were followed with CT without intervention. Ten lesions (31 %) with follow-up periods >5 years had no further radiological changes and clinical follow-up was stopped.

Conclusion

The use of Bosniak category IIF is clinically applicable, resulting in an overall surgical nephron-sparing approach to complex renal cysts.

Teaching Points

• The Bosniak classification is used to categorise complex renal cystic masses

• BIIF cysts behave mostly as benign lesions

• Radiological progression in complexity occurs in only 16 % of cases

• BIIF category seems promising for clinical application, potentially avoiding unnecessary surgery

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Title: Evaluation of Bosniak category IIF complex renal cysts
Authors: Ole Graumann
Susanne Sloth Osther
Jens Karstoft
Arne Hørlyck
Palle Jörn Sloth Osther
Publication date: 01-08-2013
Publisher: Springer Berlin Heidelberg
Published in: Insights into Imaging / Issue 4/2013
Electronic ISSN: 1869-4101
DOI: https://doi.org/10.1007/s13244-013-0251-y

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Springer Medicine

Evaluation of Bosniak category IIF complex renal cysts

Abstract

Purpose

Materials and methods

Results

Conclusion

Teaching Points

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusion

Teaching Points

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