This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Egg shell calcification are seen: 
Select and explain. 
A. Sillicosis, B. T.B., C. Carcinoma metastatic to Lymphonode, D. Lymphoma
C: Carcinoma metastatic to Lymphonode
Answer: C: Carcinoma metastatic to Lymphonode 
Explanation: 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