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Leiomyoma of the iris
H G Jellie1, J R Gonder, N R Willis
1Ivey Institute of Ophthalmology, Victoria Hospital, London, Ont.
Summary
A rare iris leiomyoma, a benign spindle-cell tumor, was diagnosed in a patient presenting with a suspected iris melanoma. This case highlights the importance of detailed histopathological examination for accurate diagnosis of iris lesions.
Area of Science:
- Ophthalmology
- Oncology
- Pathology
Background:
- Iris lesions require accurate diagnosis to differentiate between benign and malignant conditions.
- Iris melanoma is a significant concern, necessitating careful clinical and pathological evaluation.
- Spindle-cell tumors can present in various ocular tissues, requiring precise identification.
Observation:
- A 77-year-old woman presented with a lightly pigmented iris lesion.
- The lesion was initially suspected to be an iris melanoma based on clinical presentation.
- Surgical excision of the iris lesion was performed for diagnostic purposes.
Findings:
- Light microscopy revealed the excised tumor to be composed of spindle cells.
- Electron microscopy definitively diagnosed the iris lesion as a leiomyoma.
- The findings excluded the initial clinical suspicion of iris melanoma.
Implications:
- Accurate histopathological diagnosis is crucial for managing iris tumors.
- Leiomyoma is a rare, benign smooth muscle tumor that can occur in the iris.
- This case underscores the need for advanced microscopy techniques in ophthalmopathology.
- Distinguishing benign leiomyoma from malignant melanoma is critical for patient prognosis and treatment planning.