CTICasesCalcified Pleural Mouse
Imaging findings
CT chest shows a solitary, 1-2 cm calcified pleural body in the left hemithorax. The calcification has a cortex and medulla-like appearance, mimicking a piece of bone. Serial CT scans confirm that the body is mobile and has shifted dependent positions in the pleural space.
Key takeaways
Thoracoliths (pleural mice) can calcify and show a rim/laminated calcified appearance. They are benign, mobile, and require no treatment, but must be distinguished from displaced ribs or calcified pleural plaques.
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