Thanks to God Almighty, the medical team at king Abdulaziz university succeeded to treat a case of brain metastasis from primary lung cancer using stereotactic radio-surgery (SRS) technique for the first time, under the supervision of Dr Rolina Kamal AL-Wassia, assistant professor and consultant radiation oncologist at King Abdul Aziz University, Dr. Professor Yasser Abdel-Aziz Bahadur, head of radiology department at the University of King Abdul Aziz in Jeddah, and the Medical Physics team.
The treatment was administered in one sitting position to destroy three cancerous deposits, their sizes ranges from 1.5 to 1.9 cm, in a patient aged 56 years.
The patient remained 4 hours after the treatment for observation, and left the hospital in a good and stable condition.
Radiation therapy is used routinely to treat brain tumors after complete and partial surgical resection can be used for malignant or benign tumors.
Also radiation is used when surgery is not possible due to the presence of the tumor in a deep or sensitive area in the brain that makes accessibility by surgery a difficult procedure.
Radiotherapy can cause cell killing through direct DNA damage and can arrest cell reproduction that lead to tumor death.
Stereotactic Radio-surgery, SRS Is type of radiation therapy that treats the patient very accurately due to the technique used in positioning the patient's head in a special mask specified for this purpose. The mask is used to identify the location of the tumor to a reference points on the mask in three dimensions .The other reason to call this technique radio-surgery, is that we use high radiation dose and concentrated in a single session will be similar to its effect on the tumor to a surgical resection procedure.
This technique is either described as a single dose (SRS), Stereotactic radio surgery, or be described in a few sessions and (FSRT) Fractionated stereotactic radiotherapy instead of the usual long treatment schedule of radiotherapy.
The concentration of the dose prescribed is based on the diagnosis and according to international recommendations. The efficacy of the treatment and the possibilities of its side effects are defined accurately.
Situations that require stereotactic radio surgery are:
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Small deep brain tumors that cannot be accessed surgically, whether resulting from brain tissue or metastatic deposits.
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Partial surgical removal of brain tumors.
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Tumors of the pituitary gland.
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Benign tumors of skull base, Shwannoma
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Choroidal Melanoma
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Arteriovenous malformations
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Trigeminal neuralgia.
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Parkinson's disease.
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Epileptic focus.