Conjunctival nodule as a primary manifestation of disseminated histoplasmosis

Area of Science:

• Ophthalmology
• Infectious Diseases
• Mycology

Background:

• Histoplasmosis is a granulomatous infection caused by the dimorphic fungus *Histoplasma capsulatum*.
• Ocular histoplasmosis typically involves the retina or choroid, primarily in immunocompromised individuals.
• Conjunctival, scleral, and adnexal involvement are infrequently documented.

Observation:

• A rare case of disseminated histoplasmosis is presented.
• The initial clinical manifestation was a conjunctival lesion.
• This finding was crucial in diagnosing the disseminated fungal infection.

Findings:

• The study details a case where a conjunctival lesion was the first sign of disseminated *Histoplasma capsulatum* infection.
• This presentation is unusual, as ocular histoplasmosis commonly affects the posterior segment.
• The conjunctival lesion facilitated the definitive diagnosis.

Implications:

• This case expands the spectrum of clinical presentations for ocular histoplasmosis.
• It underscores the need for ophthalmologists to consider conjunctival lesions in the differential diagnosis of *Histoplasma capsulatum* infections, especially in immunocompromised patients.
• Early recognition of atypical presentations can lead to prompt diagnosis and management of disseminated fungal infections.