We report two cases of tuberculosis in patients undergoing maintenance
dialysis. In both cases Mycobacterium tuberculosis was not isolated i
n spite of mutiple localizations and diagnosis was made with delay. Se
vere hypocalcemia was the main symptom in one patient, who had pulmona
ry, genito-urinary and spinal tuberculosis. The other patient had tube
rculous lymphadenitis. The two patients survived their disease on anti
tuberculous therapy. From the literature the authors give the actuaria
l data of tuberculosis occurring in patients undergoing hemodialysis.