Hello! The physician who performed your biopsy
(or the one who ordered it done) would be best qualified to answer this question, since he/she/they are more familiar with your case. However, I'll try to translate it into more meaningful language for you.
As you probably know, FNAC stands for "fine needle aspirate cytology," which simply means this is the pathologist's interpretation of what the cells in your lymph
node look like. First, the cells in the biopsy were mixed with a little blood, which is normal. When viewed under a microscope, the biopsy contained granulomas (knots of specialized immune cells called macrophages) that had assumed the appearance of skin cells. (A granuloma is your body's way of walling off a microorganism or substance that it cannot otherwise eliminate. Epithelioid granulomas are typical of several conditions that are associated with granuloma formation, such as Crohn's disease, sarcoidosis
, so that terminology, per se, doesn't help much.) These granulomas were mixed with normal-appearing lymph node tissue. Giant cells are an indication that some of the macrophages in the granuloma have been activated, or stimulated, to deal with the irritant that triggered the granuloma -- again, not a particularly helpful clue. Ziehl-Neelson (ZN) stain is a specific cellular stain used by pathologists to detect acid fast bacteria (AFB), such as tuberculosis. In your case, the ZN stain didn't reveal any acid fast bacteria, but the pathologist still thought your biopsy was most consistent with tuberculosis.
I hope that helps. Your doctor will let you know if any further investigation is warranted or if any specific treatment is needed.