True about miliary tuberculosis:
Systemic miliary tuberculosis ensues when the organisms disseminate hematogenously throughout the body. Systemic miliary tuberculosis is most prominent in the liver, bone marrow, spleen, adrenal glands, meninges, kidneys, fallopian tubes, and epididymis. Both progressive primary tuberculosis and secondary tuberculosis can result in systemic seeding, causing life-threatening forms of disease such as miliary tuberculosis and tuberculous meningitis.
Reference: Robbins page 530,532
Occurs following primary reactivation
Occurs following secondary reactivation
Commonly affects liver, kidney and spleen
Both 1 and 2