Sarcoidosis and tuberculosis: a connection to the human leukocyte antigen system.

Infectious, genetic factors, and autoimmunity have been considered as potential causes of sarcoidosis (SA). Pathological similarities between SA and tuberculosis (TB) suggest M. tuberculosis antigen(s) as causative agent(s).

Investment in radiotherapy infrastructure positively affected the economic status of an oncology hospital.

Background: Radiotherapy is among the most efficient treatment methods of cancer. However, a radiotherapy base needs a substantial financial investment, especially before the beginning of its operation, and in some cases, in developing countries such a huge investment may cause some financial disturbances for a hospital concerned.

Aim: To assess the influence of investments modernizing the radiotherapy base in the period between 2000 and 2007 on the financial condition of the oncology hospital in the region with population of about 3 million.