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Case report


"Tram-line" Calcifications in Granulomatosis with Polyangiitis

David Livingston1Celin Rajan2J. Mark McKinney1Shweta Bhatt1
1Department of Radiology, Mayo Clinic, Jacksonville, Florida, United States, 2Department of Radiology, Christian Medical College and Hospital, Ludhiana, Punjab, India
Date of Submission: 08-Nov-2018, Date of Acceptance: 11-Feb-2019, Date of Web Publication: 30-Apr-2019.
Corresponding Author:
Corresponding Author

Shweta Bhatt

Department of Radiology, Mayo Clinic, Jacksonville, Florida 32224, United States
E-mail: bhatt.shweta@mayo.edu

Corresponding Author:
Corresponding Author

Shweta Bhatt

Department of Radiology, Mayo Clinic, Jacksonville, Florida 32224, United States
E-mail: bhatt.shweta@mayo.edu

DOI: 10.25259/JCIS-5-2019 Facebook Twitter Google Linkedin

ABSTRACT


Nephrocalcinosis consists of deposition of calcium in the renal parenchyma. Renal cortical calcification is a rare entity in comparison to calcium deposits in the medulla and is seen only in a handful of pathologies with corresponding characteristic patterns on imaging. Thin linear calcifications may get deposited in the peripheral renal cortex suggestive of cortical necrosis due to a vascular insult (vasculitis), and rarely due to glomerulonephritis. This pattern of calcification has also been referred to as the “tramline” or “railroad track” sign.
Keywords: Granulomatosis with polyangiitis, Renal calcification, Tram line, Renal failure

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