The cortical rim sign of renal infarction

Frank, P; Nuttall, John R.; Brander, W. L.; Prosser, Dominik

doi:10.1259/0007-1285-47-564-875

Cited by 21 publications

(4 citation statements)

References 19 publications

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“…2 The presence of penetrating vessels from the capsular plexus spares the cortex from infarction, resulting in the classical cortical rim sign. 5 Anticoagulant therapy may lead to resolution of the infarct, and the mass effect may disappear. 6 Chronic hyalinized fibrosis with dystrophic calcification is responsible for the high attenuation values on CT scan.…”

Section: Discussionmentioning

confidence: 99%

Case Report: Renal Infarct Mimicking Renal Mass: Further Rationale for Minimally Invasive Management

Rajeev

Köhler

Ryndin

et al. 2007

Journal of Endourology

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A 55-year-old man presented with an exophytic asymptomatic right renal lower-pole mass simulating a renal-cell carcinoma. He underwent retroperitoneoscopic partial nephrectomy, and histopathologic examination revealed a chronic renal infarct with calcifications. We report this case to stimulate the inclusion of focal chronic renal infarct in the differential diagnosis of asymptomatic renal masses, as well as to advocate a minimally invasive approach to appropriate renal lesions.

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Section: Discussionmentioning

confidence: 99%

Case Report: Renal Infarct Mimicking Renal Mass: Further Rationale for Minimally Invasive Management

Rajeev

Köhler

Ryndin

et al. 2007

Journal of Endourology

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“…This is due to the differences in arterial supply to this region of cortex compared with the remainder of the renal parenchyma. 55 Segmental infarcts appear as discrete wedge-shaped areas of nonenhancement compared with the remainder of the normally perfused renal parenchyma. Arterial-phase CT images can demonstrate occluded main or segmental renal arteries but are often not necessary for diagnosis compared with routine portal venous-phase images.…”

Section: Radiation-associated Complicationsmentioning

confidence: 99%

“…Arterial-phase CT images can demonstrate occluded main or segmental renal arteries but are often not necessary for diagnosis compared with routine portal venous-phase images. 19,40,55,56 Ureteral Injuries…”

Section: Radiation-associated Complicationsmentioning

confidence: 99%

Imaging of Iatrogenic Complications of the Urinary Tract

Patel

Gayer

2014

Radiologic Clinics of North America

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“…Segmental absence may be due to renal space-occupying processes, hemodynamic changes in peripheral branches of the renal artery, or small vessel disease such as vasculitides [ 7 , 8 ]. In the setting of renovascular compromise, the rim pattern represents preserved subcapsular perfusion by collateral flow [ 9 , 10 ]. Temporal delay in the progression of the nephrogram may be attributed to a unilateral decrease in renal blood flow [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Allergic Interstitial Nephritis Manifesting as a Striated Nephrogram

Moinuddin

Bracamonte

Thajudeen

et al. 2015

Case Reports in Medicine

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Allergic interstitial nephritis (AIN) is an underdiagnosed cause of acute kidney injury (AKI). Guidelines suggest that AIN should be suspected in a patient who presents with an elevated serum creatinine and a urinalysis that shows white cells, white cell casts, or eosinophiluria. Drug-induced AIN is suspected if AKI is temporally related to the initiation of a new drug. However, patients with bland sediment and normal urinalysis can also have AIN. Currently, a definitive diagnosis of AIN is made by renal biopsy which is invasive and fraught with risks such as bleeding, infection, and hematoma. Additionally, it is frequently unclear when a kidney biopsy should be undertaken. We describe a biopsy proven case of allergic interstitial nephritis which manifested on contrast enhanced Magnetic Resonance Imaging (MRI) as a striated nephrogram. Newer and more stable macrocyclic gadolinium contrast agents have a well-demonstrated safety profile. Additionally, in the presentation of AKI, gadolinium contrast agents are safe to administer in patients who demonstrate good urine output and a downtrending creatinine. We propose that the differential for a striated nephrogram may include AIN. In cases in which the suspicion for AIN is high, this diagnostic consideration may be further characterized by contrast enhanced MRI.

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The cortical rim sign of renal infarction

Cited by 21 publications

References 19 publications

Case Report: Renal Infarct Mimicking Renal Mass: Further Rationale for Minimally Invasive Management

Case Report: Renal Infarct Mimicking Renal Mass: Further Rationale for Minimally Invasive Management

Imaging of Iatrogenic Complications of the Urinary Tract

Allergic Interstitial Nephritis Manifesting as a Striated Nephrogram

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