Colorectal and extracolonic cancers detected at screening CT colonography in 10,286 asymptomatic adults.

Purpose: To retrospectively determine the detection rates, clinical stages, and short-term patient survival for all unsuspected cancers identified at screening computed tomographic (CT) colonography, including both colorectal carcinoma (CRC) and extracolonic malignancies.

Materials And Methods: From April 2004 through March 2008, prospective colorectal and extracolonic interpretation was performed in 10,286 outpatient adults (5388 men, 4898 women; mean age, 59.8 years) undergoing screening CT colonography at two centers in this institutional review board-approved, HIPAA-compliant study.

Stone measurement by volumetric three-dimensional computed tomography for predicting the outcome after extracorporeal shock wave lithotripsy.

Objective: To evaluate the efficacy of stone volume measured using a three-dimensional (3D) reconstruction of preoperative non-contrast computed tomography (NCCT) as an independent predictor of success after extracorporeal shock wave lithotripsy (ESWL) of upper urinary tract calculi.

Patients And Methods: We evaluated preoperative NCCT in 94 patients who had ESWL for solitary upper urinary tract calculi of 4-20 mm in diameter. Axial images were used to measure the skin-to-stone distance (SSD), Hounsfield Unit (HU) density and axial stone diameter.

Primary 2D versus primary 3D polyp detection at screening CT colonography.

Objective: Disparate results from the existing large CT colonography (CTC) trials suggest that 2D polyp detection is less sensitive than 3D detection, but no direct evidence exists to support this claim. Our goal was to assess the sensitivity of primary 2D polyp detection with cases from the Department of Defense CTC screening trial and compare results with the primary 3D evaluation and previous 2D CTC trials.

Materials And Methods: Ten radiologists, blinded to polyp findings, retrospectively interpreted 730 consecutive colonoscopy-proven CTC cases in asymptomatic adults using a primary 2D approach, with 3D reserved for problem solving.

Retroperitoneal varices presenting as an adrenal pseudotumor in a cirrhotic patient.

Herein is reported a case of a putative tumor of the left adrenal gland found incidentally during the workup of a cirrhotic patient with portal hypertension. This mass manifested vascular enhancement and other features of an adenoma both on computed tomography (CT) and magnetic resonance imaging (MRI) scans. Additional workup revealed elevated salivary cortisol and plasma aldosterone levels.