Formation of a rare curve-shaped thoracolith documented on serial chest computed tomography images: A case report

Figure 5 Serial computed tomography images obtained during a 5-year follow-up. Coronal images showing gradual thickening of the right pleura near the lower posterior mediastinum and several sporadic calcified nodules (blue arrow) in the same region with increasing intensity over time, which eventually formed a large curve-shaped calcified thoracolith measuring approximately 9 cm in length. A: 5-year follow-up in 2017; B: 5-year follow-up in 2018; C: 5-year follow-up in 2019; D: 5-year follow-up in 2022.