[Diagnostic and therapeutic procedures in actinomycosis of the liver--a case report].

Actinomycosis is a rare disease. Clinical symptoms and diagnostic imaging results need to be differentiated from those of malignancies and abscesses. We report the case of a 51-year-old woman who presented with nocturnal sweating, weight loss, fever, and abdominal pains. Ultrasound and MRI showed a mass in the liver that was diagnosed as actinomycosis by fine needle -biopsy. Antibiotic therapy led to an initial de-crease of both the complaints and the size of the mass, but was followed by progressing inflammation and deterioration of the patient's general condition. Surgical intervention and resection of the liver lesion led to a near full recovery. Aetiology, symptoms, diagnostic measures and therapy are discussed in the context of the presented clinical case.