[Erythema induratum--atypical manifestation of infection Mycobacterium tuberculosis--case report].

The term erythema induratum refers to nodules usually located on the flexion surface of the lower legs, characterized by chronic and recurrent course--usually in women. The lesions are directly related to Mycobacterium tuberculosis infection which may be confirmed by tuberculin skin test, Quantiferon test or PCR. Diagnosis of erythema induratum is a direct indication for antytuberculous therapy extended with vascular drugs. In the presented case all above mentioned skin symptoms were diagnosed and their ethiological connection with Mycobacterium tuberculosis was documented.