Least common cause of egg shell calcification in LN.. Silicosis. Sarcoidosis. Histoplasmosis. Lymphoma post rad. Blastomycosis. Amyloidosis. Scleroderma

Least common cause of egg shell calcification in LN:
A- Silicosis… Silicosis. Sarcoidosis. Histoplasmosis. Lymphoma post rad. Blastomycosis. Amyloidosis. Scleroderma.
B- Sarcoidosis.
C- Coal worker's pneumoconiosis.
D- Amyloidosis.
E- Scleroderma... (The least)
F- T.B… (Not at all)