Iris Tumours

  • Iris tumours can range from benign lesions such as cysts, naevi, melanocytoma and vascular growths to malignant lesions such as iris melanoma, metastasis and lymphoma.
  • A biopsy of the lesion is sometimes required to ascertain the diagnosis of suspicious lesions.
  • Treatment for suspicious or malignant lesions may involve a combination of surgical excision or radiation therapy.

Plaque Radiation Therapy

  • Plaque radiation therapy or plaque brachytherapy is a treatment where focal radiation is delivered to the tumour inside the eye by suturing a radioactive plaque to the outside of the eye.
  • This focused delivery allows the sparing of critical structures of the eye and body from unnecessary radiation damage.
  • This treatment involves two separate operations, usually a few days apart. The first operation is to insert the radioactive plaque and the second operation to remove it from the eye.
  • These procedures are performed under general anaesthesia at the Royal Adelaide Hospital.
  • Following insertion of the plaque, the patient is admitted to the hospital as an inpatient until the second operation. Visitors are allowed.
  • After the second operation, the patient can be discharged home with eye drops to use.
  • This procedure has a very high success rate of greater than 90% to treat the tumour in the eye.

Tumour Biopsy

  • Tumour biopsy is performed to either confirm a suspicious lesion or to provide prognostic information regarding risk of metastasis.
  • Depending on the location of the tumour, this procedure can be performed from the inside of the eye or from the outside.
  • It is usually performed at the same time as plaque radiation therapy but can be performed separately for indeterminate lesions.

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