Invasive and non invasive methods of diagnosis and the results of surgical treatment in relation to a series of 32 cases operated on benign primary tumors of the mediastinum area within the last 24 years until 1988 are revised. The age ranged between 10 and 65 years with a 65.0% predominance of females. According to the histological diagnosis and incidence, the tumors were 10 cases, 31.2% of thymic origin; seven cases, 21.8% teratodermoid cysts; two cases, 6.3% of thyroid; two cases, 6.3% celomic cysts; two cases, 6.3% bronchogenic systs and two cases, 6.3%, of benign primary cardiac mixoma. Malignant changes were found in two cases, 6.3%. Mortality rate was 6.3%, two cases, in the inmediate posoperative. In one case of teratoma, after three years of surgical removal there was recidive. A favorable evolution and recovery was seen in 91.0% of the cases. We propose to include mixomas in th...

The incessant research for therapeutic elements that dominate the tuberculosis infection accurately oriented by Robert Koch in 1882 to announce the Physiological Society of Berlin and the scientific world if intermediate isolation of the causative agent Mycobacterium Tuberculous offers us now one of its most promising successes with the synthesis of isonicotinic acid hydrazide "new antituberculosis drugs."