AJR. American journal of roentgenology
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AJR Am J Roentgenol · Apr 1998
Randomized Controlled Trial Comparative Study Clinical TrialPercutaneous treatment of liver abscesses: needle aspiration versus catheter drainage.
This study was designed to determine and compare the efficacy of sonographically guided percutaneous needle aspiration and percutaneous catheter drainage in the treatment of liver abscesses. ⋯ Our results show that percutaneous catheter drainage is more effective than needle aspiration in the treatment of liver abscesses. Needle aspiration, if limited to two attempts, has a high failure rate.
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AJR Am J Roentgenol · Apr 1998
Multicenter StudyHepatocellular carcinoma in North America: a multiinstitutional study of appearance on T1-weighted, T2-weighted, and serial gadolinium-enhanced gradient-echo images.
The purpose of this study was to define the common appearances of hepatocellular carcinoma (HCC) in patients in North America by analyzing T1-weighted, T2-weighted, and serial gadolinium-enhanced gradient-echo images interpreted by radiologists at multiple institutions in North America. ⋯ The combination of hypointensity on T1-weighted images, hyperintensity on T2-weighted images, and diffuse heterogeneous enhancement was the most common appearance of HCC on MR images in a multiinstitutional patient population in North America. Small HCCs measuring less than or equal to 1.5 cm were frequently isointense on both T1-weighted and T2-weighted images and may be detected on immediate gadolinium-enhanced images only as diffuse homogeneously enhancing lesions.
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AJR Am J Roentgenol · Apr 1998
Percutaneous CT-guided catheter drainage of infected acute necrotizing pancreatitis: techniques and results.
The objective of this paper was to assess the safety and efficacy of percutaneous catheter drainage for initial treatment of infected acute necrotizing pancreatitis. ⋯ Percutaneous catheter drainage is a safe and effective technique for treating infected acute necrotizing pancreatitis. Overall, sepsis was controlled in 74% of patients, permitting elective surgery for treatment of pancreatic fistula, and 47% of patients were cured with no surgery required. No catheter-related complications occurred.
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AJR Am J Roentgenol · Apr 1998
Asymptomatic hydropneumothorax after therapeutic thoracentesis for malignant pleural effusions.
The purpose of this study was to document in a historical cohort the incidence and clinical observations of pneumothorax ex vacuo after therapeutic thoracentesis for malignant pleural effusions in patients with underlying parenchymal lung disease. ⋯ A subgroup of patients with malignant lung parenchymal disease who undergo therapeutic thoracentesis will develop asymptomatic hydropneumothoraces due to poor lung compliance. These patients do not require further catheter drainage. Pleural effusion will reaccumulate in the residual space over a variable period of time.