Robert M. Weinfeld

Learn More
 Objective. There are no published large-scale studies of the overall prevalence of diffuse idiopathic skeletal hyperostosis (DISH) and it has been proposed that the prevalence is greater than previously reported. We thus decided to review chest radiographs in a population of patients over 50 years of age seen at two large but differing metropolitan(More)
The authors evaluated the potential of magnetic resonance (MR) imaging at 0.35 T to permit differentiation of nine hyperfunctioning adrenal cortical lesions from 21 nonhyperfunctioning adrenal cortical adenomas. Both qualitative data (visual assessment) and quantitative data (signal intensity ratios, T1, and T2) were used for tissue characterization. With a(More)
Renal masses are increasingly detected in asymptomatic individuals as incidental findings. An indeterminate renal mass is one that cannot be diagnosed confidently as benign or malignant at the time it is discovered. CT, ultrasonography, and MRI of renal masses with fast-scan techniques and intravenous (IV) contrast are the mainstays of evaluation.(More)
Endometriosis is a condition in which endometrial tissue becomes implanted on extrauterine sites, most commonly within the pelvis. Malignant transformation of endometriotic foci is rare, but has been frequently reported. We describe a patient with a CT scan demonstrating pathologically proven perihepatic endometriosis, including malignant transformation.(More)
Imaging plays a role in the management of patients with acute kidney injury or chronic kidney disease. However, clinical circumstances strongly impact the appropriateness of imaging use. In patients with newly detected renal dysfunction, ultrasonography can assess for reversible causes, assess renal size and echogenicity, and thus, establish the chronicity(More)
Renal cell carcinoma accounts for 2%-3% of all visceral malignancies. Preoperative imaging can provide important staging and anatomic information to guide treatment decisions. Size of the primary tumor and degree of local invasion, such as involvement of perinephric fat or renal sinus fat, and tumor thrombus in renal veins and inferior vena cava are(More)
Although localized renal cell carcinoma can be effectively treated by surgery or ablative therapies, local or distant metastatic recurrence after treatment is not uncommon. Because recurrent disease can be effectively treated, patient surveillance after treatment of renal cell carcinoma is very important. Surveillance protocols are generally based on the(More)
CT abdomen without and with IV contrast 9 Either CT or MRI is appropriate. Use thinsection CT. ☢☢☢☢ MRI abdomen without and with IV contrast 8 Either CT or MRI is appropriate. O US kidney retroperitoneal with duplex Doppler 8 O Biopsy renal mass 5 Varies MRI abdomen without IV contrast 3 This procedure can be useful to characterize simple cysts. O(More)
MRI abdomen without IV contrast 5 O Tc-99m bone scan whole body 5 ☢☢☢ MRI head without and with IV contrast 4 O CT head with IV contrast 4 ☢☢☢ CT abdomen and pelvis without IV contrast 3 ☢☢☢☢ CT chest without and with IV contrast 3 ☢☢☢ MRI head without IV contrast 3 O CT head without IV contrast 3 ☢☢☢ CT head without and with IV contrast 3 ☢☢☢ US abdomen 3(More)