Source:http://linkedlifedata.com/resource/umls/id/C0041321
MSH: An acute form of TUBERCULOSIS in which minute tubercles are formed in a number of organs of the body due to dissemination of the bacilli through the blood stream.,NCI: I would say the hematogenous widespread dissemination of tuberculosis in the body. The term derives from the chest X-ray image of the tiny (1-5 mm) tuberculosis lesions which are seen through out the lung parenchyma.