Small renal oncocytoma (≤4 cm): enhancement patterns on triphasic spiral computed tomography Oncocitoma renale di piccole dimensioni (≤4 cm): Pattern di enhancement quali-quantitativi alla TC spirale trifasica

Gli autori determinano criteri semeiologici quali-quantitativi per l’oncocitoma renale (OR) di piccole dimensioni (≤4 cm) mediante TC trifasica. In 18 pazienti con 19 OR in fase cortico-midollare (FCM) le lesioni sono risultate ipervascolari (n=9) e ipovascolari (n=10). Gli OR ipervascolari hanno mostrato un incremento densitometrico in FCM (151,4±38,5 UH) ed un graduale wash-out in FN (133,8±34,6 UH) e in FP (79±23 UH). Gli OR ipovascolari hanno evidenziato un incremento densitometrico in FCM (87,8±20,1 UH) ed un graduale wash-out in FN (100,3±33 UH) e in FP (86,9±20,9 UH). Summary. In 18 patients with 19 RO, 9 hypervascularity and hypovascularity was identified in 9 and 10 RO, respectively, in the cortico-medullary phase (CMP). Hypervascular RO showed increased density in the CMP (151.4±38.5 HU) and a gradual wash-out in the nephrographic phase (133.8±34.6 HU) and excretory phase (79±23 HU). Hypovascular RO showed increased density in the CMP (87.8±20.1 UH) and a gradual wash-out in the nephrographic phase (100.3±33 UH) and excretory phase (20.9±86.9 UH).