Are all granulomatous lesions tuberculosis?

Introduction: Granulomatous reactions are seen in a wide variety of diseases.

Methods: We present 3 cases referred to our clinic with presumptive diagnosis of tuberculosis (TB) were diagnosed as nontuberculous granulomatous diseases.

Results: Three cases were diagnosed as Tularemia, Cat-Scratch Disease (CSD) and idiopathic granulomatous mastitis (IGM) respectively.

Conclusion: In countries with high incidence of TB, TB is considered firstly in differential diagnosis of granulomatous diseases. Detailed anamnesis and physical examinations should be done in differential diagnosis of granulomatous diseases, and TB must be excluded.