**7. Conclusion**

Actinomycosis is a chronic bacterial infection able to cause pathological invasion and destruction of multiple tissue mimicking other conditions as systemic and inflammatory diseases, other infections and cancer. Diagnosis is difficult and often take prolonged time, with the need of invasive procedures, and the requirement of tissue samples for diagnosis. From the microscopic to the macroscopic findings, this bacteria is capable of simulating being other that what really is, and has a unique physical and pathogenic characteristics that allow it to survive and resist in inhospitable environments, making its identification a real challenge when invading the human host.

*Actinobacteria - Diversity, Applications and Medical Aspects*
