Eggshell calcification is the granular calcification along the margin of a mass, and it generally relates to lamellar lymph nodes. The calcifications are either broken or solid and are seen in almost 1% of patients suffering from this disease. They appear as round nodular opacities (1-5 mm), with reticular or reticulonodular opacities observed on rare occasions.
They can be easily diagnosed with a chest radiograph. This question is from the Editorial team of Docplexus and is meant for educational purposes only. Source: Radiopedia
