Miliary sarcoidosis is a rare thoracic manifesation of sarcoidosis where there are numerous miliary-like nodules scattered throughout the lungs. It is thought to represent less than 1% of cases.
From the limited case reports available, there is some suggestion that this form may occur in a slightly older age group (e.g. fifth decade 2)
In this form, the tiny nodules may be distributed in a random miliary-like manner without the typical galaxy configuration. Concurrent supportive features such as lymphadenopathy may be present in some cases.
On CT imaging, consider other causes of miliary nodular opacities, such as
For a broader differential for miliary pattern in the lungs - refer to miliary opacities
- 1. Criado E, Sánchez M, Ramírez J, Arguis P, de Caralt TM, Perea RJ, Xaubet A. Pulmonary sarcoidosis: typical and atypical manifestations at high-resolution CT with pathologic correlation. Radiographics : a review publication of the Radiological Society of North America, Inc. 30 (6): 1567-86. doi:10.1148/rg.306105512 - Pubmed
- 2. Taki M, Ikegami N, Konishi C, Nakao S, Funazou T, Ariyasu R, Yoshida M, Nakagawa K, Morita K, Hee Hwang M, Yoshimura C, Wakayama T, Nishizaka Y. Pulmonary Sarcoidosis Presenting with Miliary Opacities. Internal medicine (Tokyo, Japan). 54 (19): 2483-6. doi:10.2169/internalmedicine.54.4681 - Pubmed
- 3. Hatzakis K, Siafakas NM, Bouros D. Miliary sarcoidosis following miliary tuberculosis. Respiration; international review of thoracic diseases. 67 (2): 219-22. doi:29492 - Pubmed