OBJECTIVE: The purpose of this study is to analyze the @entity8984 -FDG PET/CT features of solid renal masses detected in @entity1 with @entity706 and to evaluate the ability of PET/CT to differentiate @entity1358 ( @entity1358 ) from renal @entity1669 . MATERIALS AND METHODS: Thirty-six @entity1 with solid renal masses on PET/CT performed for staging or follow-up of @entity706 were evaluated retrospectively. The features recorded for each renal mass included the following standardized uptake values (SUVs) on PET/CT: the maximum SUV (SUVmax), the mean SUV (SUVmean), the ratio of the SUVmax of the @entity5 to that of the normal kidney cortex, the ratio of the SUVmean of the @entity5 to that of the normal kidney cortex, the ratio of the SUVmax of the @entity5 to that of the normal liver, and the ratio of the SUVmean of the @entity5 to that of the normal liver. Renal mass size and margins (well defined vs infiltrative) and the presence of calcifications were evaluated on CT. Renal biopsy results were used as the reference standard. Relationships between imaging parameters and histopathologic findings were assessed. RESULTS: Of the 36 renal masses evaluated, 22 (61.1%) were RCCs and 14 (38.9%) were @entity8 . All SUV metrics were higher for @entity8 than for RCCs (p < 0.0001, for all). All @entity8 had an SUVmax higher than 5.98 g/mL (median, 10.99 g/mL), whereas all RCCs had an SUVmax lower than 5.26 g/mL (median, 2.91 g/mL). No statistically significant differences in mass size or margins were found between RCCs and @entity8 . CONCLUSION: PET/CT features may be useful for differentiating RCCs from renal involvement in @entity1 with @entity706 with solid renal masses.

Renal Masses Detected on FDG PET/CT in XXXX With Lymphoma: Imaging Features Differentiating @entity1358 From @entity8 Involvement.

@entity8984 :: ('CHEBI:36939', 'Chemical') :: ['(18)F'] @entity1 :: ('9606', 'Species') :: ['patients'] @entity8 :: ('MESH:D007674', 'Disease') :: ['renal lymphoma', 'renal lymphomas'] @entity706 :: ('MESH:D008223', 'Disease') :: ['lymphoma'] @entity1669 :: ('MESH:D013967', 'Disease') :: ['lymphomatous involvement'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity1358 :: ('MESH:D002292', 'Disease') :: ['renal cell carcinoma', 'RCC']
@entity1 :: (9606,Species) :: ['Patients']
