**1. Introduction**

Tuberculosis (TB) has decreased its incidence in the industrialized countries in the last 100 years; despite this it remains within the top 10 of infectious diseases that cause death (above HIV). Millions of people contract TB every year [1]. Tuberculous pericarditis, caused by *Mycobacterium tuberculosis* (Mtb), is a rare disease, observed in about 2% of people suffering from pulmonary tuberculosis and about 1% in autopsies of people who die from tuberculosis [2].
