Differentiation of renal oncocytoma and renal clear cell carcinoma using relative CT enhancement ratio.

Background: The difference between renal oncocytomas (RO) and renal clear cell carcinomas (RCCs) presents the greatest diagnostic challenge. The aim of this study was to retrospectively determine if RO and RCCs could be differentiated on computed tomography (CT) images on the basis of their enhancement patterns with a new enhancement correcting method.

Methods: Forty-six patients with a solitary renal mass who underwent total or partial nephrectomy were included in this study.

Gastric hepatoid adenocarcinoma: a computed tomography report of six cases.

We describe the computed tomography (CT) imaging findings in six cases (five males and one female; age range 61-78 years; mean age 67.3 years) with histologically proven hepatoid adenocarcinoma of the stomach (HAS). Five of the six patients had elevated serum alpha-fetoprotein levels.

[Application of imaging postprocessing of thoracic spiral CT].

Objective: To evaluate the clinical values of spiral CT imaging postprocessing techniques.

Methods: Totally 167 patients with known or suspected abnormalities of thorax (including small pulmonary emboli, primary and metastatic tumours, diffuse lung diseases, bronchiectasis and emphysema) underwent spiral CT of their thorax. We reconstructed images by using different postprocessing techniques (MPR, MIP, SSD, VR, STS and VE).