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Updated: Jul 15, 2026

04:44
Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
[Iris granulomas of unknown aetiology]
M Zinkernagel1, L Zografos, R Rüesch
1Augenklinik Kantonsspital St. Gallen, Switzerland. Martin.Zinkernagel@kssg.ch
Summary
Isolated iris granulomas are rare and mimic malignant tumors. This case highlights a non-pigmented iris tumor, likely an ocular manifestation of sarcoidosis, responding to corticosteroid treatment.
Area of Science:
- Ophthalmology
- Pathology
- Immunology
Background:
- Non-pigmented iris tumors are uncommon and challenging to diagnose without systemic signs.
- Distinguishing these lesions from malignancies like melanoma is clinically difficult.
Observation:
- A case study of a 47-year-old patient with a unilateral, vascular, non-pigmented iris tumor exhibiting progressive growth.
- Initial systemic evaluation did not reveal any underlying systemic disease.
Findings:
- Biopsy confirmed a non-necrotizing granuloma.
- The iris lesion demonstrated significant regression following systemic corticosteroid therapy.
Implications:
- Isolated iris granulomas represent a rare clinical entity.
- This case suggests that iris granulomas can be an isolated ocular manifestation of sarcoidosis.
- Prompt diagnosis and treatment with corticosteroids can lead to favorable outcomes, preventing misdiagnosis as malignant tumors.
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