Cranial hydatid abscess.

A woman of age 20 years presented with a tender cystic swelling over the right temporal region, with proptosis of the right eye and purulent discharge from the right ear. A computed tomography scan revealed a mixed density lesion involving both extra- and intracranial spaces, which was not enhanced with contrast. Following an operation, histopathology revealed the structure to be a hydatid abscess (infected hydatid cyst).