Primary Conjunctival Molluscum Contagiosum in a Patient With Ocular Graft-Versus-Host Disease.

Purpose: Primary conjunctival molluscum contagiosum (MC) is rare and usually reported in patients with acquired immunodeficiency syndrome. In this study, we present a case of bilateral primary conjunctival MC in a patient with ocular graft-versus-host disease (oGVHD).

Methods: This is a case report study. Clinical evaluation, in vivo confocal microscopy imaging, and histopathology were used to confirm the diagnosis.

Results: A 38-year-old woman with a history of allogeneic bone marrow transplant and secondary chronic oGVHD presented with ocular discomfort, redness, and dryness. On examination, clusters of white gelatinous nodular lesions, stained with fluorescein and Lissamine green, were observed on the bulbar conjunctiva, along with similar solitary nodular lesions in all quadrants of both eyes. In vivo confocal microscopy revealed nests of epithelial cells with bright inclusions measuring approximately 30-35 μm. Excisional biopsy confirmed the diagnosis of MC. A 6-month post-operative follow-up showed healed conjunctiva with no recurrence and improved ocular comfort.

Conclusions: Molluscum contagiosum should be considered in the differential diagnosis of conjunctival lesions in patients with impaired immunity such as oGVHD. In diagnosing MC lesions, in vivo confocal microscopy proves to be valuable. In the absence of topical antiviral treatment, surgical excision is warranted.