A case of refractory pulmonary mycobacterium fortuitum infection with lipoid pneumonia due to sesame oil

A 49-year-old woman with refractory pulmonary Mycobacterium fortutium infection was referred to our hospital. Bronchoscopy was reexamined in suspect of other diseases, because the disease was progressive and resistant to multidrug antibiotic therapy. However, no new findings were obtained which suggested malignancy or other infections. Since it was difficult to control by medical treatment, pneumonectomy was performed. On the other hand, it turned out that she regularly performed gargling of sesame oil prior to admission. In addition, there were a large number of lipid droplets in the resected lung. We finally reached the diagnosis of M.fortuitum infection associated with lipoid pneumonia. In case of intractable nontuberculous mycobacterial infection, it is necessary to suspect the possibility of concomitant lipoid pneumonia.