[A case report of actinomycosis of the lung].

This is the report about a case of the infrequently observed actinomycosis of the lung from the clinical-surgical and pathological-anatomical standpoint. Considering existing publications the picture of the disease is described with this case. In consequence of misinterpretation of clinical-cytological and histological findings and of the picture of the disease during seven months of the postoperative phase a progressive generalized actinomycosis developed. The problems and causes of the error are discussed, also the possibilities to recognize this disease. The difficulties in giving a diagnosis are shown. The protracted illness could be cured in spite of the late start of appropriate therapy.