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PURPOSE To investigate the utility of computed tomographic (CT) virtual cystoscopy in the detection of bladder tumors. MATERIALS AND METHODS Twenty-six patients suspected or known to have bladder neoplasms underwent CT virtual and conventional cystoscopy. The bladder was insufflated with carbon dioxide through a Foley catheter. Helical CT of the bladder(More)
OBJECTIVE The purpose of this study was to analyze the CT contrast enhancement washout curves of adrenal masses and to determine the earliest time after initial enhancement that differentiation of adenomas from nonadenomas is possible. MATERIALS AND METHODS Contrast enhancement washout curves were generated after delayed contrast-enhanced CT scans of 52(More)
OBJECTIVE We compared the sensitivity of CT scout radiography with that of abdominal radiography in revealing ureteral calculi on unenhanced helical CT. MATERIALS AND METHODS Over a 6-month period, patients presenting to the emergency department with acute flank pain were examined with standard abdominal radiography and unenhanced helical CT, which(More)
RATIONALE AND OBJECTIVES We evaluated the utility of the Bosniak system for classifying cystic renal masses on computed tomography (CT) scans. METHODS The CT scans of 20 patients with 24 cystic renal masses that were subsequently surgically removed or biopsied were reviewed retrospectively. Masses were categorized using the Bosniak system and were(More)
OBJECTIVE We evaluated a variety of internal architectural features in ruptured and nonruptured abdominal aortic aneurysms to determine whether any features are associated more frequently with ruptured abdominal aortic aneurysms. These features may be useful in identifying subtle ruptures when no obvious retroperitoneal hematoma is present and may be(More)
OBJECTIVE The purpose of our study was to determine the accuracy of MRI for preoperative staging of renal cell carcinoma using the 1997 TNM classification. MATERIALS AND METHODS We conducted a retrospective review of MRI performed in 40 consecutive patients with 42 renal cell carcinomas before radical (n = 35) or partial (n = 4) nephrectomy or exploratory(More)
OBJECTIVE CT findings in retroperitoneal plexiform neurofibromas have been described previously only in a few case reports. This study was performed to characterize the CT features in a larger group of patients with this benign neoplasm and to delineate those findings that suggest the presence of concurrent malignant tumors of the nerve sheath. MATERIALS(More)
This article discusses the accuracy and complications of percutaneous biopsy of adrenal masses and the rapidly evolving new methods for noninvasive differential diagnosis using CT scan, MR imaging, and radio-nuclide scintigraphy. We offer our current recommendations for the evaluation of benign versus malignant adrenal masses and speculate on the optimal(More)
OBJECTIVE The excretory urographic and CT appearance of orthotopic ileal neobladder reconstruction after cystectomy and its complications are described. MATERIALS AND METHODS We retrospectively reviewed the excretory urograms and CT scans of 32 patients (29 men and three women, 35-76 years old) with transitional cell carcinoma of the bladder who underwent(More)