Hypovascular retroperitoneal lesions

Last revised by Bálint Botz on 6 Dec 2021

Hypovascular retroperitoneal lesions are those which do not enhance in the late arterial and portal venous phases on CT. Some of these lesions may show progressive enhancement in the delayed phase due to their fibrous or myxoid matrix components.

Non-enhancing lesions

Delayed-phase enhancing lesions

These lesions show minimal enhancement in the portal phase and demonstrate progressive intake of contrast in the delayed phase.


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Cases and figures

  • Case 1: neurofibroma
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  • Case 2: retroperitoneal desmoid tumor
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  • Case 3: retroperitoneal lymphoma
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  • Case 4: ganglioneuroma
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  • Case 5: ganglioneuroblastoma
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  • Case 6: neuroblastoma
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