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Updated: Jul 15, 2025

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
Unilateral metastatic pulmonary calcification in context of ipsilateral central pulmonary embolism
Alexandre Semionov1, Ilan Azuelos2, Arielle Mendel3
1Department of Diagnostic Radiology, Montreal General Hospital, McGill University Health Centre, 1650 Cedar Ave, Montreal, QC H3G 1A4, Canada.
Abstract:
We report a case of unilateral left metastatic pulmonary calcification (MPC) in a 30-year-old woman with systemic lupus erythematosus, acute nephritis, and left main pulmonary artery pulmonary embolism. Unilateral MPC is rare and is mostly seen in the context of ipsilateral pulmonary embolism. The proposed mechanism is the promotion of calcium salts precipitation by focal alkalosis resulting from reduced blood flow to the lung affected by the pulmonary arterial obstruction.
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