PMC5405365_01
(a) Picture of the dome shaped lesion in the upper nasal quadrant. (b) B scan echographic image showing a classical lengthened image with a flattening and weakening of the posterior eye wall, for the presence of silicon oil in the vitreous chamber. (c) A scan echographic image showing a medium-low reflective lesion followed by a chain of multiple signals. (d) B scan echographic image showing a classical lengthened and weakened image due to the presence of silicon oil in the upper medial episcleral space.
CRIOPM2017-5401850.001.jpg
PMC5405365_01_CRIOPM2017-5401850.001.jpg
fig1
In the upper nasal quadrant a dome shaped lesion was detected, which arose with a differential diagnosis with scleral buckling extrusion, tumor, dermoid, ocular cysticercosis, and abscess (Figure 1(a)). The echographic examination showed very poor pictures of the posterior eye wall for a typical shadowing, diagnostic for the presence of silicone oil in the vitreous chamber (Figure 1(b)), and demonstrated a cystic lesion, in the upper medial episcleral space (Figures 1(c) and 1(d)) that had the same echographic features as the silicone oil in the vitreous chamber, with a medium-low reflectivity followed by a chain of multiple signals due to the so-called surface waves, which do not occur in soft tissues but could appear in spherical foreign body-like structures.