1. Pulmonary sarcoidosis: calcification within the galaxy sign

    A relevant and very well described case, useful for ongoing comprehension of sarcoidosis'pathogenesis. The "galaxy sign" summons for a spreading of causal agents (mineral dusts ? bacteria ? others ?)from a "mother" lesion to surrounding areas, in coherence with recent interpretations of sarcoidosis as a peculiar, common reaction to different xenobiotics, particularly in contexts of "heavy" exposomes. Calcification is a common feature with silicosis. It could be really interesting which exposures' profile characterized the patient. Please, see a recent paper of mine about a case of lung fibrosis in a woman occupationally exposed to amorphous silica and expoy rosins vapours.

    Conflict of Interest:

    None declared

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