Abstract
A patient with a history of squamous cell carcinoma of the right upper lung lobe treated 14 years before by concomitant chemo-radiotherapy was referred on account of dyspnea. Bronchial endoscopy revealed complete obstruction of the right main bronchus highly suggestive of a tumor recurrence. However, biopsy samples only showed inflammatory and necrotic tissue with no evidence of malignancy. Despite complete tissue resection by rigid bronchoscopy, a rapid and complete recurrence occurred requiring the placement of a Y-shaped bronchial prosthesis. Repeat histological, bacteriological and mycological analyses were negative. The patient was soon readmitted to hospital for a lung infection due to recurrence of obstruction inside and around the prosthesis. Bacterial examination of biopsy samples identified Actinomyces meyeri. Appropriate antibiotic therapy led to a complete regression of the bronchial obstruction. Unfortunately, the patient died a few months later due to massive hemoptysis after the removal of the prosthesis. Autopsy examination showed a fistula between the right main bronchus and pulmonary artery, with no evidence of neoplastic recurrence nor the persistence of lesions associated with actinomycosis.
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