ORBITAL TUMOURS
OVERVIEW
Orbital tumours are abnormal tissue growths that occur in the structures surrounding the eye. This tissue growth may be benign (non-cancerous) or malignant (cancerous) and primarily arise from the orbit or spread (metastasise) from somewhere else in the body.
TYPES OF ORBITAL TUMOURS
- SQUAMOUS CELL CARCINOMA
this cancer usually starts on the ocular surface and then spreads to the orbit if left untreated. It is a very aggressive cancer that also has the potential to spread via the back of the orbit to the brain and result in loss of life. - CAVERNOUS HEMANGIOMA
an abnormal cluster of tightly packed, thin-walled, small blood vessels called capillaries. This tumour causes symptoms such as facial drooping, headaches, blurred vision, double vision or vision loss. - MENINGIOMAS
non-cancerous tumours of the meninges, the membranes that cover and protect the brain and spinal cord. These tumours can compress adjacent brain tissue and also extend into the orbit, causing the eye to bulge forward abnormally. - ORBITAL LYMPHOMAS
These are a group of tumours that occur in the reticuloendothelial and lymphatic systems. Lymphomas may affect the lymph nodes/glands, thymus gland, spleen and bone marrow, as well as other organs throughout the body. - RETINOBLASTOMA
This is the cancer of the retina that affects children specifically.
SYMPTOMS OF ORBITAL TUMOURS
In some cases, orbital tumours may not cause any symptoms, or symptoms may occur gradually over a long period. Some patients, however, may experience rapid onset symptoms. Common symptoms of orbital tumours include the development of a bulging eye, abnormal appearance of the eye, decreased vision, episodes of vision loss, and double vision.
TREATMENT
Surgery is performed to remove orbital tumours. The ophthalmologist may also recommend radiation and chemotherapy for rare malignant tumours. In addition, stereotactic radiosurgery may also be indicated, which involves the use of a highly focused beam of radiation that targets the cancer cells and destroys them.