Chronic granulomatous 'Aspergillus lung mass'.

The diverse clinicopathological spectrum of pulmonary aspergillosis is a consequence of varying levels of invasiveness of this ubiquitous fungus, which largely depends on the host immune response and pre-existing lung disease. The clinical presentation of pulmonary aspergillosis spans a wide spectrum from hypersensitivity to life threatening angio-invasive and disseminated disease. We report the case of a young immunocompetent male with no underlying lung disease, who presented with an incidentally detected 'infective mass' lesion in the lung associated with minimal respiratory symptoms. The diagnostic challenges posed by the unusual clinical, radiological and histological picture as well as the therapeutic dilemmas faced are discussed in this report.