Clinical disease resulting from hematogenous dissemination of mycobacterium tuberculosis bacilli. originally described by the appearance of millet seed-like granulomas in the lungs, its progression from sustained bacteremia to extrapulmonary involvement is suggestive of a poor prognosis.

Miliary tuberculosis is a form of tuberculosis that is characterized by a wide dissemination into the human body and by the tiny size of the lesions (1–5 mm). Its name comes from a distinctive pattern seen on a chest radiograph of many tiny spots distributed throughout the lung fields with the appearance similar to millet seeds—thus the term "miliary" tuberculosis...