Orbital hydatid cyst.
A 46-year-old man presented with unilateral proptosis of the right eye for 3 months. The patient was a shepherd and had contact with dogs. Visual acuity was 20/800 in the right eye and 20/25 in the left eye. Physical examination revealed an axile, irreducible and painless proptosis, without breath or thrill, associated with lower chemosis (Figure 1A, asterisk), lagophthalmos and exposure keratitis (Figure 1A, arrowheads). The CT scan showed a right intra conial hypodense mass measuring 42 mm × 29 mm, well limited, with sharp and spontaneously hyperdense edges (Figure 1B, asterisk). It pushes forward the eyeball, resulting in a grade III proptosis (figure 1B, arrows). Blood count …