Mycobacterium kansasii is the second most common non-tuberculous mycobacterium associated with lung disease in the United States.¹ Diseases are almost always cavitary, involving the upper lobes with fibrosis and infiltrations. Underlying pulmonary diseases associated with M kansasii infection include pneumoconiosis, chronic obstructive lung disease, AIDS and malignancy. To our knowledge, M kansasii has never been reported in the English literature in the aetiology of infected pulmonary sequestration. We report a case of intralobar sequestration complicated by infection with M kansasii.

A 33 year old man was previously healthy. An abnormal finding on the chest radiograph had been noted at a routine health check 1.5 years earlier. He had no history of medical illness and no risk factors for HIV infection. No symptoms attributed to his respiratory system, such as cough, haemoptysis or dyspnoea, were noted. Constitutional symptoms including malaise, fever, night sweats, anorexia, or weight …