Thoracic Vertebral Actinomycosis Secondary to a Pulmonary Origin.

Actinomycosis is a chronic infection caused by a gram-positive anaerobic bacteria from the species Actinomycesand causes a chronic colliquative inflammatory reaction known as actinomycotic granuloma, which is characterized macroscopically by suppuration, sinus tract formation, and purulent discharge containing yellowish sulfur granules. It can invade any part of the human body. This is a case report of a 40-year-old male patient known to the cardiothoracic team due to a sarcoma of the left lung. He presented with progressive thoracic myelopathy. Initially, the diagnosis was thought to be a spinal metastasis from the lung lesion. Further investigation revealed a thoracic actinomycosis with epidural granuloma tissue causing a spinal compression.