Discussion
Diagnosis With Brief Discussion
- Diagnosis
- IgG4-related pleural disease
- Radiologic Findings
- Fig 1-3. Chest CT scans reveal multifocal enhancing pleural nodules with soft tissue thickening in right paravertebral area.
- Brief Review
- IgG4-related pleural disease manifests as unilateral or bilateral pleuritis with pleural effusion. On CT images, small pleural nodules, diffuse inflammatory pleural thickening, or pleural plaque can be seen. Paravertebral band-like soft tissue occurs in approximately 8% of IgG4-related disease. It is a major finding included in the 2019 ACR/EULAR criteria. It mainly occurs in the lower part of the thoracic spine, spanning two or more than vertebrae. It can be bilateral, but always involves the right side, which is thought to be related to the location of the thoracic duct. The band shape is most common, but can also be seen as nodular or infiltrative irregular shape. It appears as soft tissue on CT, isosignal intensity on T1 and T2 weighted images on MRI and homogeneous contrast enhancement on CT and MRI. The anterior portion of the spine adjacent to the mass may be extremely rarely involved.
- References
- Kim YK, Choi HY. Immunoglobulin G4-Related Disease in the Thorax: Imaging Findings and Differential Diagnosis. J Korean Soc Radiol 2021;82(4):826-837.
- Keywords