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Addison’s disease refers to a chronic endocrine disorder characterized by primary adrenal insufficiency. The disease can occur due to various causes including autoimmune disease, infection, tumor and vascular disease. In the past, Mycobacterium tuberculosis (TB) infection was a major cause of adrenal failure and was associated primarily with early co-pulmonary infection. In the present era however, Addison’s disease secondary to primary adrenal TB infection is somewhat rare. We describe a patient who was admitted to our hospital and was diagnosed with Addison’s disease secondary to TB proven only following laparoscopic adrenalectomy.

We measured the photoluminescence (PL), the optical absorption and the magneto-optical absorption of β- FeSi2 single crystals which were fabricated by a chemical vapor transport method. The characteristic 0.8 eV-PL bands of β- FeSi2 thin films were not observed in our single crystals. However, we found new two PL lines (0.717 and 0.737 eV) and new two absorption peaks (0.858 and 0.909 eV) at low temperatures. All the samples which were measured in this study were classified into two groups according to the absorption peak energies. The two types of samples showed different absorption energies, but the magnetic field dependencies of the energy shifts are quite the same. Furthermore, the evaluated effective g factor is about 4 for both types of samples.