Theodora A. Potretzke

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OBJECTIVE The purpose of this study was to determine the frequency with which biphenotypic primary liver carcinoma (also called hepatocholangiocarcinoma) may be misclassified as hepatocellular carcinoma (HCC) when only Liver Imaging Reporting and Data System (LI-RADS) major features are used and after consideration of ancillary features. MATERIALS AND(More)
PURPOSE To compare efficacy and major complication rates of radiofrequency (RF) and microwave (MW) ablation for treatment of hepatocellular carcinoma (HCC). MATERIALS AND METHODS This retrospective single-center study included 69 tumors in 55 patients treated by RF ablation and 136 tumors in 99 patients treated by MW ablation between 2001 and 2013. RF and(More)
OBJECTIVE To develop an evidence-based approach to the diagnostic workup of suspicious upper urinary tract lesions. METHODS The PubMed database was searched using the following terms with a filter for English language: "upper tract urothelial carcinoma" and "upper tract transitional cell carcinoma," along with the following corresponding terms: "cost,"(More)
PURPOSE To compare dual-energy computed tomography (CT) with conventional CT for the detection of small-bowel ischemia in an experimental animal model. MATERIALS AND METHODS The study was approved by the animal care and use committee and was performed in accordance with the Guide for Care and Use of Laboratory Animals issued by the National Research(More)
INTRODUCTION Approximately 5% of angiomyolipomas (AMLs) are classified as "fat poor" due to lack of visually detectable fat on imaging, making them difficult to distinguish from renal cell carcinoma. Recent investigations have proposed CT and MR imaging features suggestive of fat-poor AML (fp-AML). Herein, we determined the frequency of these features in a(More)
To compare gadoxetic acid alone and combined gadoxetic acid/gadofosveset trisodium-enhanced liver MRI for detection of metastases and differentiation of metastases from haemangiomas. Ninety-one patients underwent gadoxetic acid-enhanced liver MRI before and after additional injection of gadofosveset. First, two readers retrospectively identified metastases(More)
LI-RADS v2017 introduces major changes to the diagnostic criteria for LR-M observations to better guide radiologists in the use of this malignant category designation. LR-M is intended to preserve the specificity of the LI-RADS algorithm for diagnosis of HCC while not losing sensitivity for diagnosis of malignancy. The purpose of this paper is to provide a(More)
PURPOSE To create a simple model using clinical variables for predicting lipid-poor angiomyolipoma (AML) in patients with small renal masses presumed to be renal cell carcinoma (RCC) from preoperative imaging. MATERIALS AND METHODS A series of patients undergoing partial nephrectomy (PN) for renal masses ≤4 cm was identified using a prospectively(More)
To retrospectively determine the rate of major bleeding complications after solid organ or lung biopsy in patients with hypertension and compare to the rates of bleeding in normotensive patients. Following IRB approval, retrospective review of all solid organ and lung biopsies performed at our institution between June 1st, 2013 and October 31st, 2015 was(More)
BACKGROUND Chronic indwelling catheters may induce histologic changes within the bladder, and these changes are sometimes pre-malignant. There are many documented cases of squamous cell carcinoma associated with indwelling catheters, but only three cases of catheter-associated adenocarcinoma have been reported. In this case report, we present radiographic(More)