Lab # 1 Spine Flashcards
Patients usually present with severe ____ and ______ along a particular nerve path to the appropriate extremity.
pain and weakness
Diagnosis can be demonstrated through a ____________ to show metastasis from primary diseases
radionuclide bone scan
________________ tumors refer to a subgroup of intradural spinal tumors that arise from cells within the spinal cord, as opposed to adjacent structures such as the nerve roots or meninges.
Intramedullary spinal cord
Intramedullary spinal cord tumors’ most common initial symptom is
generalized back pain
Intramedullary spinal cord tumor arise from within the
`spinal cord
are Intramedullary spinal cord tumor more or less common than brain tumors
less common
the surgical removal of a lamina, or posterior portion, of a vertebra
laminectomy
which procedure is used to decompress and expose the spinal cord
laminectomy
Post-operative radiation can be used with a spinal tumor dose of?
45000-5000 cGy
name 4 primary brain tumors
Ependymoma,
astrocytoma,
unclassified gliomas, and
glioblastomas
What is primary Intramedullary Neoplasms ?
Primary Tumors that occur inside the spinal cord
What is Metastatic Intramedullary Neoplasms ?
rare occurrence arising from primary breast or lung tumors
Most involve the spinal column and skull
cause spinal cord compression ( emergency situation)
what is the post-operative radiation dose/fractions for medtastatic intramedullary neoplasms?
3000 cGy in 10 fractions
the most common malignancy affecting the spinal cord
metastatic extradural tumors
where do metastatic extradural tumors arise?
breast, lung, prostate, and testicular cancer, as well as lymphomas and tumors of the renal system
metastatic extradural tumors infiltrate into the _____ and into the __________ and extend in each direction along the __________.
dura
vertebral canal
spinal cord
what are the most common sites of metastatic bone disease development?
spine and pelvis
what is the most common primary tumor that mets to bone?
lung
what are other common primaries that mets to bone? (4)
breast, prostate, thyroid, and kidney
define osteolytic
bone destruction
define osteoblastic
bone production
which type of bone lesion is more common?
osteolytic
what fields may be used to treat bone mets
signle fields or parallel opposed fields
how many verteral bodies are there is the cervical region
7
how many verteral bodies are there is the thoracic region
12
how many verteral bodies are there is the lumbar region?
5
what is the treatment depth and width for the cervical region?
depth: 4cm
width: 6 cm
what is the treatment depth and width for the thoracic region?
depth: 5-6 cm
width: 6-8 cm
what is the treatment depth and width for the thoracic region?
depth: 6-7 cm
width: 8 cm
what is the treatment depth and width for the sacrum?
depth: 4-5 cm
width: 12-15 cm spade field
what is the treatment depth and width for the coccyx?
depth: 4-5 cm
width: 12-15 cm spade field
what are the critical structures when treating the spine?
spinal cord
what is the TD 5/5 for the spinal cord
4700 cGy
