Abstract
Purpose To characterize the computed tomography (CT) imaging findings in patients with pulmonary chondroma. Methods We examined CT imaging findings of eight patients with histopathologically verified pulmonary chondroma. We assessed the location, size, shape, margins, amount of calcification, calcification pattern, and attenuation on precontrast and enhancement CT. Results All patients exhibited solitary, mildly lobulated pulmonary masses, which were located in the right lung in four cases and the left lung in four cases. The mean lesion size was 3.7 cm (range 0.9–10.7 cm). All eight tumours had a well-defined margin. On plain CT images, seven of the cases (87.5%) showed a mass with varying degrees of calcification, which included strip-like punctate (n=5) and ring (n=2) patterns. One patient with a large lesion (10.7 cm) showed chest wall adhesion. On contrast-enhanced CT images, all lesions demonstrated slight inhomogeneous enhancement ≤14 HU. Conclusion CT is the reference standard diagnostic technique for locating pulmonary chondroma. In most cases, CT findings show some characteristics that are important in the diagnosis, surgical planning, and follow-up of the tumour.
Highlights
Chondromas are benign tumours that originate from chondrocytes
On plain computed tomography (CT) images, seven of the cases (87.5%) showed a mass with varying degrees of calcification, which included five masses with strip-like punctate patterns defined as scoring 1 (Figure 2) and two lesions with ring (Figure 3) patterns defined as scoring 3
Pulmonary chondroma often originates from the ectopic cartilage of the lung tissue, while chondrocytes within the bloodstream can flow into the lungs
Summary
Chondromas are benign tumours that originate from chondrocytes. Chondromas are typically found in the long bones and rarely arise in the lung parenchyma, with pulmonary chondroma only accounting for 0.04% of lung tumours [1]. The pulmonary chondroma is a benign condition, the association with Carney triad prompts further investigation [2]. Accurate and comprehensive evaluation is very important to pulmonary chondroma. Because of the low associated morbidity, there are only a few reports of pulmonary chondroma [3,4,5,6,7,8,9,10,11,12], and the imaging features were not well examined. The aim of the present study was to determine the computed tomography (CT) imaging findings of pulmonary chondroma
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