| eggshell | 1. The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell. 2. <zoology> A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form. Source: Websters Dictionary (01 Mar 1998) |
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| eggshell calcification | A thin layer of calcification around an intrathoracic lymph node, usually in silicosis, seen on a chest radiograph. (05 Mar 2000) |
| eggshell lymph node calcification | <radiology> Silicosis, sarcoid, treated Hodgkin's lymphoma (12 Dec 1998) |