Download - Lung Cancer
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Lung Cancer
Understanding the disease Treatment options Side effects of treatment
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Three lobes on the right and two on the left
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Three lobes on the right and two on the left
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Lung Lymph Nodes
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Importance of the Lymph Nodes
Nodes on the side (hilar or N1) are not as significant if nodes in the middle or higher up are involved (N2 or mediastinal nodes)
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Lymph Node Stations
N2 Nodes: all N2 nodes lie within the mediastinal pleural envelope on the ipsilateral side
10. hilar, 11. interlobar, 12 lobar nodes bronchi, 12 segmental, 14. subsegmental
N1 Nodes: all N1 nodes lie distal to the mediastinal pleural reflection and within the visceral pleura
1. highest mediastinal, 2. upper paratracheal, 3. prevascular/ retrotracheal, 4. lower paratracheal, 5. subaortic/AP window, 6. para-aortic, 7.subcarcinal, 8. paraesophageal, 9. pulmonary ligament
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Superior Mediastinal Nodes (1-4) 1. Highest Mediastinal: above the left brachiocephalic vein. 2. Upper Paratracheal: above the aortic arch, but below the left brachiocephalic vein. 3. Pre-vascular or Pre-vertebral: these nodes are not adjacent to the trachea like the nodes in station 2. They are either anterior to the vessels (3A) or behind the esophagus, which is prevertebral (3P). 4. Lower Paratracheal (including Azygos Nodes): below upper margin of aortic arch down to level of main bronchus.
Aortic Nodes (5-6) 5. Subaortic (A-P window): nodes lateral to ligamentum arteriosum. These nodes are not located between the aorta and the pulmonary trunk, but lateral to these vessels. 6. Para-aortic (ascending aorta or phrenic): nodes lying anterior and lateral to the ascending aorta and the aortic arch.
Inferior Mediastinal Nodes (7-9) 7. Subcarinal. 8. Paraesophageal (below carina). 9. Pulmonary Ligament: nodes lying within the pulmonary ligaments.
Hilar, Interlobar, Lobar, Segmental and Subsegmental Nodes (10-14) 10-14: these are located outside of the mediastinum.They are all N1-nodes.
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Reading a Chest Xray
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Reading a CT Scan
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Cross Section Anatomy of the Chest
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Cross Section Anatomy of the Chest
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PET Scan Anatomy
spineSpinal cord
ribs
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Xray versus CT versus PET scan
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PET/CT Scan showing lung cancer in three different planes
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Types of Lung Cancer
Non-small cell carcinoma (NSCC)– Adenocarcinoma– Squamous cell– Large cell
Small cell carcinoma
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Stages of Lung Cancer
Stage I – small spot no nodes Stage II – larger or nodes on the side of the
lung (hilar or N1 nodes) Stage III – very large tumor or lymph nodes in
the middles of the chest (mediastinum or N2 nodes)
Stage IV – metastases to other organs
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Treatment of Lung Cancer
Stage I and II – surgery (if possible) and sometime postOp chemo or radiation
Stage III – usually chemo plus radiation, sometime followed by surgery
Stage IV – chemo or radiation, depending on the site of spread
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In the simulation process the CT and PET scan images are used to create a computer plan
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PET/CT Lung Cancer Image
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Initial CT Lung Image Prior to PET Fusion
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Initial CT
PET Scan
Fused on Treatment Planning
Computer
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In the treatment the lasers are used to line up the beam and the patient receives the radiation treatment
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Combine a CT scan and linear accelerator to ultimate in targeting (IGRT) and ultimate in delivery (dynamic, helical IMRT) ability to daily adjust the beam (ART or adaptive radiotherapy)
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Computer generated images of small lung cancer (in blue) in the left upper lung and the radiation target zone (green) that surrounds it
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Computer generated images showing the radiation beam passing through the patient to hit the small lung cancer
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Computer generated images showing the volume and dose of normal lung receiving radiation
The computer monitors the total lung dose to keep it below a dose level that could cause problems
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Computer generated lung cancer target in red
and radiation zone (yellow) surrounds it
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Using CT scans the computer can generate the target for a cancer in the upper part of the lung
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Using CT scans the computer can generate the target for a small cancer growing inside the trachea
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Computer generated images to target the tumor
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Tomotherapy images showing the radiation zone in red surrounds the cancer area (in blue) and limits the dose of radiation that hits the normal lung, heart or spinal cord
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Cyberknife of Tampa Bay
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Cyberknife for Lung Cancer
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Radiation Results
Some lung cancers (like small cell) shrink quickly, other cancers may take weeks or months to slowly regress
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PET Scan showing complete remission of the cancer in the left lung at 7 months
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PET scan showing near complete remission, 2 months after radiation alone for NSCL
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PET scan showing degree of tumor shrinkage 6 weeks after completion chemoradiation for NSCL lung cancer (the tumor will continue to shrink for weeks to months)
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Very large lung cancer, prior to radiation
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PET scan of the same patients, 2 years later, there is still a large density in the lung, but it is ‘cold’ on the PET scan, so just radiation fibrosis or scar tissue
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Side Effects of Lung Radiation
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Side Effects of Lung Radiation
Esophagus – sore throat or trouble swallowing
Trachea or lungs – cough or shortness of breath
Chest wall – tenderness Skin – sunburn Fatigue
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Radiation Prescription for #
Cancer
Target
diagnosis: Stage # NSCL of #number of radiation treatments: #