GOOD SYNDROME: CYTOMEGALOVIRUS RETINITIS CASE CHALLENGE.

Purpose: To describe cytomegalovirus retinitis in a patient with Good syndrome (hypogammaglobulinemia and thymoma), ocular progression despite treatment and fatal outcome.
Methods: A 71-year-old woman with unilateral panuveitis of unknown cause and a history of thymoma resection was referred to the clinic. Visual acuity was 20/100 in her right eye and light perception in her left eye. In slit-lamp examination, the right eye had inferior, fine, pigmented keratic precipitates, 2+ anterior chamber cells, cataract, and 2+ vitreous cells, with no fundus detail and normal ocular ultrasound results. Left eye presented a white cataract, chronic hypotony, and increased choroidal thickness with calcifications. Laboratory evaluations showed normal or negative results for common causes of infection and inflammation. Prednisolone acetate eye drops were started, with improvement of AC inflammation. Cataract surgery was performed, reaching visual acuity of 20/30. Two years later, visual acuity had decreased and 2+ vitritis and retinitis were found. On clinical suspicion of masquerade syndrome, a vitrectomy biopsy was performed; pathologic assessments reported no data on ocular lymphoma. Leukopenia and lymphopenia were found: immunoglobulin levels, CD4 count, and viral load revealed systemic immunosuppression. The aqueous tap was positive for cytomegalovirus. Oral valganciclovir and intravitreal ganciclovir were initiated.
Results: In a patient with previous resection of thymoma and hypogammaglobulinemia, final diagnosis was Good syndrome, with cytomegalovirus retinitis being secondary to immunosuppression. Despite treatment, cytomegalovirus retinitis progressed and systemic deterioration resulted in mortal outcome.
Conclusion: Good syndrome is an extremely rare disease, and association with cytomegalovirus retinitis is uncommon. To the authors' knowledge, only 14 cases exist in the literature.