Recurrent toxoplasmic retinochoroiditis. Significance of perilesional satellite dark dots seen by indocyanine green angiography.

PURPOSE: To suggest an explanation for the satellite dark dots seen by indocyanine green angiography (ICGA) around the main focus of a toxoplasmic retinochoroiditis.

METHODS: The authors analysed the evolution of ICG satellite dark dots in two cases of recurrent toxoplasmic retinochoroiditis receiving anti-toxoplasmic treatment not including corticosteroids.

RESULTS: Both patients had a recurrence on the peripheral aspect of scars from previous retinochoroiditis and were treated with pyrimethamine (50 mg/day) and sulfadiazine (4 g/day) for seven weeks. Resolution of satellite ICG dark dots was observed in both cases on the follow-up ICG angiogram performed at the end of treatment.

CONCLUSION: Resolution of ICG satellite dark dots after anti-toxoplasmic treatment not including corticosteroids tends to indicate that there is probably an infectious component in these hypofluorescent dots and that they probably do not represent a purely inflammatory perilesional reaction.