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 Indian J Med Microbiol  
 

Figure 5 (A and B): Sarcoidosis: Galaxy sign and cluster sign. (C) Magnified axial high resolution computed tomography (HRCT) image (lung window) shows macronodule with irregular margins (dashed arrow) due to presence of multiple small micronodules at the periphery representing coalescent lesion referred to as “sarcoid galaxy sign” (B) Axial HRCT image (lung window) in the same patient (at different level) shows multiple clusters of micronodules in perilymphatic distribution bilaterally suggestive of “sarcoid cluster” sign

Figure 5 (A and B): Sarcoidosis: Galaxy sign and cluster sign. (C) Magnified axial high resolution computed tomography (HRCT) image (lung window) shows macronodule with irregular margins (dashed arrow) due to presence of multiple small micronodules at the periphery representing coalescent lesion referred to as “sarcoid galaxy sign” (B) Axial HRCT image (lung window) in the same patient (at different level) shows multiple clusters of micronodules in perilymphatic distribution bilaterally suggestive of “sarcoid cluster” sign