scholarly journals Characterization of Small Renal Masses Less than 4 cm with Quadriphasic Multidetector Helical Computed Tomography: Differentiation of Benign and Malignant Lesions

2012 ◽  
Vol 53 (3) ◽  
pp. 159 ◽  
Author(s):  
Seung-Kwon Choi ◽  
Seung Hyun Jeon ◽  
Sung-Goo Chang
2015 ◽  
Vol 14 (2) ◽  
pp. e415-e415a
Author(s):  
V. Vagnoni ◽  
C. Gaudiano ◽  
M. Borghesi ◽  
M. Bandini ◽  
E. Brunocilla ◽  
...  

2019 ◽  
Vol 18 (1) ◽  
pp. e897-e898
Author(s):  
A. Pili ◽  
E. Bertelli ◽  
S. Sforza ◽  
A. Mari ◽  
R. Campi ◽  
...  

Author(s):  
D.C Oliveira ◽  
L.A.V.S Costa ◽  
B.F Lopes ◽  
A.B Lanis ◽  
D.C Borlini ◽  
...  

It is reported a case of an eight-year-old Yorkshire Terrier dog, with a history of prolonged use of prednisone in a dosage of 1mg/kg of body weight each 24 hours during two years. The helical computed tomography revealed hepatomegaly associated to a hyperattenuation of the parenchyma, with a radiodensity value of 82.55 Hounsfield units (HU). The spleen presented a mean radiodensity of 57.17HU, and a radiodensity difference of 25.38HU was observed between the two organs. Based on the history and findings of imaging technique, it was determined the presumptive diagnosis of steroidal hepatopathy compatible with accumulation of hepatic glycogen. It was concluded that computed tomography enabled the characterization of hepatic injury and the presumed diagnosis of steroidal hepatopathy


Author(s):  
Mohamed Samir Shaaban ◽  
Viviane George Adly Ayad ◽  
Mohamed Sharafeldeen ◽  
Mona A. Salem ◽  
M. A. Atta ◽  
...  

Abstract Background Renal masses are becoming an increasingly common finding on cross-sectional images. Characterization of the nature of the lesion either neoplastic or not, benign or malignant as well as further subtype characterization is becoming an important factor in determining management plan. The purpose of our study with to assess the sensitivity and specificity of both ADC mean value and ADC ratio in such characterization along with the calculation of different cutoff values to differentiate between different varieties, using pathological data as the main gold standard for diagnosis. Results Our study included 50 patients with a total of 72 masses. A final diagnosis was reached in 69 masses by pathological examination and three masses had clinical and laboratory signs of infection. We had a total of 49 malignant lesions (68%) and 23 benign lesions (32%). The ADC value of ccRCC (1.4 × 10−3 mm2/s) was significantly higher than all other renal masses. A cutoff ADC value of > 1.1 and a cutoff ADC ratio of > 0.56 can be used to differentiate between clear cell renal cell carcinoma and other lesions and an ADC value of < 0.8 and an ADC ratio of ≤ 0.56 to differentiate papillary renal cell carcinoma from other masses. There was no statistically significant ADC value to differentiate between benign and malignant lesions but a statistically significant ADC ratio (> 0.52) was reached. Conclusion ADC value and ADC ratio can be used as an adjunct tool in the characterization of different renal masses, with ADC ratio having a higher sensitivity, which can affect the prognosis and management of the patient.


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