Rad Onc 1
Terms
undefined, object
copy deck
- Describe multiple myeloma
- Nonosseous malignant tumor arising in marrow
- Most common anatomical sites osteosarcoma
- Distal femur or proximal tibia
- What is the most common prognosis factor in Ewing's sarcoma?
- Extent of disease at time of diagnosis
- Why does sacral involvement in Ewing's sarcoma carry a negative prognosis?
- Ease of treatment and local recurrence.
- Skip mets occur in osteosarcomas via what route?
- From lesion into bone marrow cavity
- Most common anatomical sites chondrosarcoma
- Shoulder, proximal femur or tibia
- Sarcomas tend to metastasize to lung, but osteosarcomas also spread via this mechanism to opposing joint spaces.
- Skip mets
- List some suspected causes of STS.
- Prior radiation, exposure to chemicals
- Lobes of the lung almost all drain to this node.
- Subcarinal
- What is the tradition dose schema for STS?
- Up to 6ooo cGy with reduction fields
- Infiltrating chondrosarcomas in marrow are indicated by...
- necrosis or hemorrhage
- When is the lymphatic spread of bone tumors of concern?
- For tumors in the trunk of the body
- MFH is another name for this type of connective tissue disease.
- fibrosarcomas and malignant histiocytoma
- Suggested maximum dose to heart in treatment planning for lung carcinoma.
- 40 Gy
- What three variables affect patient prognosis for lung carcinoma?
- stage, weight loss, Karnofsky performance status < 70
- What is the definitive dose range for localized bronchogenic carcinoma?
- 6000-7500 cGy
- Name the two groups of lymphatics responsible for regional spread of bronchogenic carcinoma
- mediastinal and intrapulmonic
- Name the nodes affected by regional disease for lung carcinoma
- mediastinal, paratracheal, parahilar,subcarinal
- In what part of lung is squamous cell carcinoma frequently found?
- centrally
- In which type of bone cancer does radiation play a definitive role?
- Ewing's sarcoma, very radiosensitive
- Name two of the most common primary malignant joint and bone tumors in children
- osteosarcoma, Ewing's sarcoma
- How many new cases of primary malignant bone tumors in the United States each year among children and adults?
- 2500