Pulmonary hydatid disease with coexistent aspergillosis: an incidental finding.

There are only a few case reports in the literature on the coexistence of aspergillosis and echinococcosis. We report a case of a 45-year-old immunocompetent patient who presented with a history of intermittent fever and cough with haemoptysis. Chest x-ray and CECT showed a large cystic lesion in right lower lobe with multiple floating membranes. Histopathological examination of cyst wall revealed the laminated membrane of hydatid cyst along with infiltration of its wall with septate fungal hyphae with acute angle branching suggestive of aspergillosis.