Caplan Syndrome

Caplan Syndrome

This is also known as rheumatoid pneumoconiosis

The patient has a background of pneumoconiosis.

Features

• Rapidly developing well-defined nodules of 5–50 mm
• The nodules can cavitate, becoming thick-walled and calcifying
• Typically located in the upper lobes of the lungs
• Background parenchymal changes are consistent with pneumoconiosis
• May have small pleural effusion

References

1. Gaillard F, Yu Y, Bell D, et al. Caplan syndrome. Reference article, Radiopaedia.org (Accessed on 10 Aug 2024) https://doi.org/10.53347/rID-1049

2. Dahnert, Wolfgang F. Radiology Review Manual. Available from: Wolters Kluwer, (8th Edition). Wolters Kluwer Health, 2017. p664