Hydatid Cyst : Brood Capsule
The patient was a 29 y/o male immigrant from the middle east and he presented with respiratory symptoms. Chest x-ray showed a cystic lesion in the lung suspicious for echinococcosis. Diagnosis was confirmed serologically. The patient underwent pneumonectomy. The image shows a brood capsule containing several scoleces within. Image copyright: pathorama.ch.