Successful Removal of a Ruptured Orbital Cyst Using 2.3% Sodium Hyaluronate and Indocyanine Green.

A healthy 64-year-old man presented with a non-tender soft mass in the upper inner quadrant of the anterior left orbit. Magnetic resonance imaging revealed a 14 x 16 x 14-mm homogeneous cystic lesion in the anterior superonasal orbit with a distinct margin. An orbital cyst was suspected, and its surgical removal was planned. During the operation, the cystic mass ruptured unexpectedly and collapsed. Subsequently, a mixture of 0.5 mL of 2.3% sodium hyaluronate and 0.5 mL of 1% indocyanine green (ICG) was injected into the orbital cyst using a 27-gauge needle. Thereafter, the cyst became easily visible and clearly defined, which was successfully removed without difficulty. The usage of 2.3% sodium hyaluronate and ICG facilitated safe and complete excision of an accidentally ruptured orbital cyst.