<prompt> Egg shell calcifiaction of the hilar nodes is seen in-AsbestosisBerylliosisSilicosisCoal workers pneumoconiosis  <response>: Eggshell calcification is a radiographic term describing abnormal hilar or mediastinal lymph nodes. According to Fraser and Pare, Eggshell calcification is uncommon; it consists of a ring of calcification around the periphery of a lymph node and occurs most typically in silicosis. Ref Davidson 23rd edition pg 599 