Acid-fast stain demonstrates focal slender rod shaped organisms present in caseous material.
Bacteriologic cultures of the liver mass grew Mycobacterium tuberculosis.
Reference
Oliva A, Duarte B, Jonasson O, Nadimpalli V. The nodular form of local hepatic tuberculosis. J Clin Gastroenerol 1990;12(2):166-73.
Contributed by Ed Weir, M.D. and Jeff Nine, M.D.