Primary peritonitis due to brucellosis mimicking tuberculous peritonitis.

Peritonitis due to brucellosis is extremely rare and the reported cases are mostly chronic hepatic failure patients with ascites or chronic renal failure patients on continuous ambulatory peritoneal dialysis. We report a 20-year-old male patient, with no underlying disease, who was diagnosed as peritonitis due to brucellosis mimicking tuberculosis, with ascites with pleocytosis, lymphocytic predominance and high levels of adenosine deaminase.