Skip to main content
Insights into Imaging
Fig. 1 | Insights into Imaging

Fig. 1

From: Small (<1 cm) incidental echogenic renal cortical nodules: chemical shift MRI outperforms CT for confirmatory diagnosis of angiomyolipoma (AML)

Fig. 1

Diagnostic algorithms for incidentally detected echogenic renal cortical nodules. a For nodules >1 cm in size, definitive characterisation with CT or MRI to confirm the presence of gross fat and the diagnosis of AML is widely accepted. b For nodules <1 cm in size, management varies and is controversial. Options include: doing nothing, sonographic follow-up to confirm stability in size or CT to confirm the presence of gross fat and the diagnosis of AML. In our experience, the majority of nodules <1 cm in size cannot be further characterised with CT, which can lead to a variety of subsequent examinations including US or CT follow-up, contrast-enhanced CT or MRI. c In our opinion, the radiologist confronted with an incidental echogenic renal nodule measuring <1 cm in size should consider either US follow-up to confirm stability, or if definitive characterisation is required, chemical shift MRI and not CT should be performed

Back to article page