Growth rate of early-stage hepatocellular carcinoma in patients with chronic liver disease.

Background/aims: The goal of this study was to estimate the growth rate of hepatocellular carcinoma (HCC) and identify the host factors that significantly affect this rate.

Methods: Patients with early-stage HCC (n=175) who underwent two or more serial dynamic imaging studies without any anticancer treatment at two tertiary care hospitals in Korea were identified. For each patient, the tumor volume doubling time (TVDT) of HCC was calculated by comparing tumor volumes between serial imaging studies.

Subtype differentiation of renal cell carcinoma using diffusion-weighted and blood oxygenation level-dependent MRI.

Objective: The purpose of this article is to evaluate the utility of diffusion-weighted imaging (DWI) and blood oxygenation level-dependent (BOLD) MRI for characterizing renal cell carcinoma (RCC) subtypes at 3 T.

Materials And Methods: Seventy-seven patients underwent 3-T DWI and BOLD MRI. Apparent diffusion coefficient (ADC; × 10(-3) mm(2)/s) and rate of spin dephasing (R2*, which equals 1 / T2* relaxation time, or 1/s) values were measured in the three RCC subtypes and normal renal parenchyma, and the results were compared.

Pulmonary mucinous cystadenocarcinoma: report a case and review of CT findings.

A pulmonary mucinous cystadenocarcinoma is an extremely rare tumor that is considered to be a cystic variant of mucin-producing lung adenocarcinoma. We present a case of pulmonary mucinous cystadenocarcinoma in a 54-year-old woman. Chest CT scans showed a 4.

Evaluation of adrenal metastases from renal cell carcinoma and hepatocellular carcinoma: use of delayed contrast-enhanced CT.

Purpose: To retrospectively compare absolute and relative washout of adrenal metastases in patients with renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC) to that of adrenal adenoma.

Materials And Methods: Between November 1994 and August 2011, in this institutional review board-approved study (with waiver of informed consent), 16 patients with 19 adrenal metastases (16 in 13 RCC patients, three in three HCC patients) and 20 patients with 21 adrenal adenomas (16 in 15 RCC patients, five in five HCC patients) underwent dedicated adrenal protocol consisting of unenhanced, 1-minute contrast material-enhanced, and 15-minute delayed contrast-enhanced computed tomography (CT). The attenuation values and percentage enhancement washout, including absolute percentage washout (APW) and relative percentage washout (RPW), were calculated.

MRI features of a solid mass-like renal lymphangioma: case report.

Renal lymphangioma typically manifests as a unilocular or multilocular cystic mass in the parapelvic or perirenal spaces. A solid mass-like lymphangioma rarely occurs and thus is hard to differentiate from a renal cell carcinoma. We encountered a case of a solid mass-like renal lymphangioma that was confirmed using percutaneous biopsy.