Bosniak classification is for?
Renal tuberculosis
Renal cysts
RCC
VUR
The Bosniak classification system of renal cystic masses divides renal cystic masses into five categories based on imaging characteristics on contrast-enhanced CT. It is helpful in predicting a risk of malignancy and suggesting either follow up or treatment. Classification: Bosniak I -Simple cyst , imperceptible wall; Work up:nil; Percentage malignant: ~0% Bosniak 2 - Minimally complex, a few thin <1 mm septa or thin calcifications (thickness not measurable); non-enhancing high-attenuation (due to proteinaceous or haemorrhagic contents) renal lesions of less than 3 cm are also included in this category; these lesions are generally well marginated; Work-up: nil; Percentage malignant: ~0% Bosniak 2F - Minimally complex, increased number of septa, minimally thickened with nodular or thick calcifications there may be perceived (but not measurable) enhancement of a hairline-thin smooth septa hyperdense cyst >3 cm diameter, mostly intrarenal (less than 25% of wall visible); no enhancement; Requiring follow-up: needs ultrasound/CT follow up - no strict rules on the time frame but reasonable at 6 months; Percentage malignant: ~ 5% Bosniak 3 - Indeterminate thick, nodular multiple septa or wall with measurable enhancement, hyperdense on CT; Work-up: paial nephrectomy or radiofrequency ablation in elderly or poor surgical candidates; Percentage malignant: ~55% Bosniak 4 - Clearly malignant solid mass with a large cystic or a necrotic component; Treatment: paial or total nephrectomy; Percentage malignant: ~100%.
Urology