Egg shell calcification are seen:
C i.e. Pleuro-pericardial cyst Spring water cyst also k/a Pleuro-pericardial cystQ or pericardial coelomic cystQ is most commonly found in pericardiophrenic angle more often on right side. Hydatid cyst is also k/a Water-lilly/Camalotte cystQ
Sillicosis
T.B.
Carcinoma metastatic to Lymphonode
Lymphoma