Tuberculous Serositis Coexisting with Reversible High-Grade Atrioventricular Block

We report two young male patients with documented tuberculous serositis that were complicated with high-degree atrioventricular block (AV block) during the course of the disease. In contrast to the previously reported irreversible nature of tuberculosis-related AV block, these conduction abnormalities in our cases resolved spontaneously under antituberculosis treatment. Such reversible tuberculosis-related AV block, to our knowledge, has never been reported before and could be important for physicians who treat patients with tuberculosis and newly-developed conduction block.