The Bosniak classification for CT and MRI has been recently revised. 3 A Bosniak classification for CEUS has not been developed. 4 The Bosniak system is intended for cystic renal masses after infectious, inflammatory, and vascular etiologies, as well as necrotic solid masses, are excluded.

1.4 Bosniak Klassifikation für Nierenzysten . verschafft CEUS, gegenüber den kontrastmittelverstärkten CT- und MRT. Untersuchungen, einen großen Vorteil, 

This CT-based classification was introduced in 1986 and originally divided cystic renal masses into one of four Using Bosniak classification version 2019, cystic renal masses were classified into 12 category I, 19 category II, 13 category IIF, four category III, and 20 category IV by CT and eight category I, 15 category II, 23 category IIF, nine category III, and 13 category IV by MRI. This diagram depicts various renal cysts morphologies, listed in order by their potential for malignancy, using the Bosniak classification system. The cysts in the top row (1 and 2) do not need further evaluation or monitoring. What is the Bosniak classification system for cystic renal lesions? The Bosniak classification system utilizes specific CT or MR imaging features to help classify cystic renal lesions into those that are likely benign (and do not require surgical resection) from those that are likely malignant (and thus require surgical resection).

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Type 1 Bosniak type 1 renal cysts are simple benign cysts. Corresponding Author. Royal United Hospital, Bath, UK. Jonathan McFarlane, Department of Urology, Royal United Hospital, Bath, UK. e‐mail: jon.mcfarlane@btinternet.com Search for more papers by … A classification system based on spe- were analyzed retrospectively to determine how ef- cific CT features has been advocated by Morton fective the Bosniak classification system is in sepa- A. Bosniak to separate lesions requiring surgery rating surgical from nonsurgical lesions. 2017-06-01 Bosniak was the normal radiological assessment procedure for cystic renal lesions.

The Bosniak classification categorizes renal cysts into five groups. Category I. Benign simple cyst with thin wall without septa, calcifications, or solid components, and has a density of 0–20 Hounsfield units (HU) (about equal to that of water). In such cases, a CT scan without intravenous contrast is enough for classification.

This system was originally developed on CT findings, but it can be also used at MRI [ 11 , 16 , 17 ]. The Bosniak classification was originally developed to classify renal cysts based on CT findings, but MRI and CEUS can also be used [12,[22][23] [24] as the latter techniques show even higher THE ORIGINAL BOSNIAK CLASSIFICATION OF RENAL CYSTS In 1986, Bosniak [8] proposed a classification of renal cysts. The diagnosis and management of complex renal cysts was contentious, and a combination of CT, US and urography was being used to distinguish between benign and malignant lesions.

11. Okt. 2017 Obgleich der Nutzen der CT für die Versorgung der Patienten nicht mehr Bei Nierenzysten ist es wichtig, mittels Bosniak-Klassifikation den 

As a living system, refinements were made in 1993 and 2005 (version 2005) (2–4).

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2017-06-01 Bosniak was the normal radiological assessment procedure for cystic renal lesions. Originally, it relied on computed tomography (CT) scan results and subsequently extended to magnetic resonance imaging (MRI). Renal cell carcinoma (RCC) surveillance was not enhanced in the past 20 years. Bosniak classifications depend on different morphological modifications in renal cysts such as septa 2020-12-07 Because of such a necessity, Bosniak, in 1986 , developed a classification system based on computed tomography (CT) imaging criteria allowing for the analysis of renal cysts' contour and contents, presence of septations and/or calcifications, and enhancement after contrast agent injection.

In his original classification, there were four categories: • Category I: simple benign cysts (fluid-filled, no perceptible wall) • Category II: benign cystic lesions that are The Bosniak classification system, based on computed tomography (CT), is widely used to categorize cystic renal lesions. The aim of this study was to evaluate critically available data on the Bosniak classification. Verwendung der Bosniak Klassifikation Bosniak-Klassifikation I Einfache Zyste II Septierte, minimal kalzifizierte, nicht KM-anreichernde hyperdense Zyste; infizierte Zyste III multilokulär, hämorrhagisch , deutlich kalzifiziert; nicht KM-anreichernde solide Anteile Nierenerhaltende OP IV Randirregularitäten; KM-anreichernde solide Anteile The Bosniak criteria were introduced to allow the use of specific computed tomographic (CT) findings to help separate nonsurgical from surgical cystic masses and guide patient management .
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A classification system based on spe- were analyzed retrospectively to determine how ef- cific CT features has been advocated by Morton fective the Bosniak classification system is in sepa- A. Bosniak to separate lesions requiring surgery rating surgical from nonsurgical lesions.

2.2 Bosniak Klassifikation adaptiert aus EAU Guidelines 2019[1]. Bosniak. Die Computertomografie (CT) und Magnetresonanz- Zweifelsfall erfolgt eine weitere Abklärung mittels CT. 1.5 Nierenzysten-Klassifikation nach Bosniak. Morphologie und Konfiguration in der CT nach der Bosniak-Klassifikation (s. Tab. 4) beschrieben und eingeteilt (28), (29).