Dr. Alex Jimenez, El Paso's Chiropractor
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Spinal Neoplasms Diagnostic Imaging Approach Part I

Metastatic Bone Disease (aka Mets) or “Secondaries.” Are the most common malignant bone neoplasms affecting the spine, aka spinal neoplasms (>70%) and the rest of the skeleton in adults.

  • 5-Primaries are m/c involved:
  • Breast (16-37%)
  • Lung (12-15%)
  • Thyroid (4%)
  • Renal (3-6%)
  • Prostate (9-15%)
  • Spine, pelvis, proximal femurs & proximal humeri are m/c affected in that particular order of frequency
  • Thoracic & upper Lumbar spine considered the m/c site of spinal Mets

Pathophysiology & Etiology of Metastasis

  • Malignant cells a very good at evading immune detection and elimination
  • They gain access to circulation expressing Vascular Endothelial Adhesion Molecules (e.g., integrines & selectins)
  • Once reaching their target organs, malignant cells stimulate the production of various vasogenic growth factors and by exiting blood vessels invade their target tissues
  • Lung, Liver, and Bone are particularly at risk due to the character of their blood supply
  • Baston venous plexus-is a network of valveless freely communicating  veins connecting axial skeleton/meninges and proximal femurs/humeri with abdomino-pelvic and thoracic cavities
  • The risk of Mets is increased during daily variations in the intra-abdominal and intra-thoracic pressure
spinal neoplasms diagnostic imaging el paso tx.
spinal neoplasms diagnostic imaging el paso tx.
  • In adults, the axial skeleton is involved in hematopoiesis, and it is particularly vulnerable to metastatic deposits via an abundant network of sinusoids within a spongy bone
  • The vast majority of bone Mets will be detected in the axial skeleton

Clinical Presentation

  • Back pain often mimicking “mechanical back pain” is the m/c and often misleading symptom
  • Chiropractors and other manipulators should be particularly aware of this dangerous pitfall.
  • Nocturnal pain or pain unresponsive to NSAID may be reported in more advanced cases
  • Advanced cases may also present with a neurological deficit due to pathologic vertebral fractures and spinal cord/nerves compression
  • Metastatic hypercalcemia may occasionally develop in severe cases and considered a medical emergency that potentially presents with confusion, muscle weakness, and renal signs
  • Imaging plays a significant role in the Dx and management of bone metastasis
  • Lab tests are of limited value, but hypercalcemia and alkaline phosphatase (Alk Phos) may be elevated
  • In some cases, a bone biopsy may be used to confirm bone Mets

When Bone Mets are Detected, Patients Prognosis is Significantly Worsened

  • Median survival:
  • Thyroid – 48 – months
  • Prostate – 40 – months
  • Breast – 24 – months
  • Renal Cell – may vary, can be as low as 6 – months
  • Lung – 6 – months

Imaging Diagnosis

  • Begins with radiography investigating a clinical complaint of back/bone pain
  • If radiographs are unrewarding or equivocal, unique imaging modalities are required
  • MRI may help to show marrow replacement by Mets foci but limited to specific regions
  • Tc99 radionuclide bone scan (scintigraphy) is considered one of the most sensitive and reliable imaging steps in evaluating bone Mets
  • Bone scintigraphy is good at detecting both lytic and blastic Mets
  • However, very aggressive/vascular osteolytic Mets and Multiple Myeloma often appear “cold” or photopenic on bone scan due to greater stimulation/activation of osteoclasts which “outpace” osteoblasts ability to uptake the radiopharmaceutical
  • CT scanning is an excellent modality to show bone destruction, but it is not widely used during bone Mets Dx especially if radiography, bone scintigraphy, and MRI provide adequate information about the process
  • CT scanning may be particularly helpful with delineation of pathological fractures

General Radiographic Features of Bone Mets

  • Osteolytic (lytic), osteoblastic (blastic) aka sclerotic Mets or misec Mets can be identified radiographically 
  • However, it takes between 30-50% of lamella (cortical) bone and 50-75% of trabecular (cancellous) or spongy bone to be destroyed before it can be detected on plain film radiographs
  • This can make early radiographic detection of bone Mets very difficult, requiring particular imaging modalities (e.g., MRI)
  • Also, bowel gas/fecal matter and numerous soft tissue densities in the abdomino-pelvic and thoracic cavities may pose challenges of bone Mets detection
  • Different tumors often manifest with different metastatic appearance, depending on tumor activity and release of cytokines (IL6, IL11), endothelin 1 or other growth factors that will be responsible for either osteolytic, osteoblastic or mixed Mets
  • For example: purely lytic bone Mets are noted in Lung, Thyroid, and Renal cell CA (very vascular)
  • Breast CA may present with 60% of blastic Mets
  • Prostate CA presents with 90% of blastic Mets
  • Other blastic Mets may derive from urinary bladder, melanoma and GI adenocarcinomas
  • Sclerotic foci may also represent as previously treated primaries
  • Very vascular  Mets like Renal cell and Thyroid may present with markedly  lytic and expansile foci often called “blow out Mets.”
  • Mets found distal to elbows and knees (acro-metastasis) are commonly associated with Lung CA
spinal neoplasms diagnostic imaging el paso tx.
  • PA chest view of a routinely screened patient with a known Hx of Prostatic adenocarcinoma
  • Note sclerotic lesion identified in the left posterior Rib 5
  • What imaging modality is required next?
  • Radionuclide bone scan should be suggested
spinal neoplasms diagnostic imaging el paso tx.
  • Multiple foci of high uptake of the Tc99 radiopharmaceutical
  • This is due to Mets and increased osteoblastic activity in the thoracic and lumbar spine, ribs and other sites of the skeleton
spinal neoplasms diagnostic imaging el paso tx.
  • Comparison of purely lytic (a and b) versus blastic (d) and mixed (c) Mets
  • What primaries to consider?
spinal neoplasms diagnostic imaging el paso tx.
  • Frog leg view of the hip
  • Clinical Dx: Prostatic adenocarcinoma
  • Note diffuse blastic Mets in the proximal femur
spinal neoplasms diagnostic imaging el paso tx.
  • Hx: severe shoulder and arm pain unrelieved by rest
  • Rad DDx: Mets, Myeloma or less frequently Lymphoma
  • This classic DDx is used by the majority of Radiologists when aggressive osteolytic bone lesions are noted
  • The patient had a known Hx of Breast CA
spinal neoplasms diagnostic imaging el paso tx.
  • A 51-year-old female with Breast CA
  • Large lytic destructive lesion in the distal femoral metaphysis characteristic of aggressive osteolytic Mets
spinal neoplasms diagnostic imaging el paso tx.
  • Sudden onset of severe leg pain and inability to stand in a 53-year-old female with Breast CA
  • Dx: Pathological fracture through the distal femoral shaft
  • Pathological Mets fractures in the spine and extremities are dreaded by most Oncologists due to higher association with severe complications and poor clinical prognosis
spinal neoplasms diagnostic imaging el paso tx.
  • Radiographic Dx of vertebral Mets should be suspected if a “missing pedicle sign” aka “winking owl sign” is noted
  • DDx: pedicle agenesis (above left) shows hypertrophy and sclerosis of a contralateral pedicle d/t increased mechanical stress
  • Pedicle Mets are often thought of as the m/c initial site of spinal Mets
spinal neoplasms diagnostic imaging el paso tx.

Vertebral Body Pathologic Fracture (VERTEBRA PLANA)

  • Isolated compression fracture at the T8 segment noted (above arrow)
  • The loss of the posterior and anterior height suggest an underlying pathologic condition for which the differential diagnosis includes:
  • Multiple myeloma
  • Metastatic Carcinoma
  • Other malignancy
  • Osteoporosis
  • Differentiating Pathological Fx of the vertebral body from an osteoporotic insufficiency Fx can be a significant challenge
  • Close inspection of the posterior body height is helpful but often not reliable
  • In metastasis, the posterior body is collapsed
  • In OSP, the posterior body may be maintained appearing more as anteriorly wedge fracture
  • MR imaging and/or radionuclide bone scan need to be performed
spinal neoplasms diagnostic imaging el paso tx.
  • A skeletal radiographic survey may be used occasionally for the evaluation of bone Mets especially in well-established cases
  • It includes bilateral AP & lateral Thoracic and Lumbar views, AP pelvis, humeri, femurs, and the skull
  • Availability of special imaging has supplanted the use of skeletal radiographic survey
  • However, in a clinical practice skeletal radiographic study of Multiple Myeloma may still be used primarily if the diagnosis was previously established
spinal neoplasms diagnostic imaging el paso tx.

Technetium-99 (99mTc) bone scintigraphy is very sensitive and cost-effective study:

  • For the detection/localization of Mets and often an assessment of their biologic activity and response to treatment
  • This modality is a well-established part of the workup for known as well as unknown primaries
  • It may also help with determination of lesions that will be most accessible and easy to biopsy
spinal neoplasms diagnostic imaging el paso tx.
  • When the burden of Mets is significantly high as shown in the case above
  • The radiotracer uptake is being almost entirely taken in by metastatic lesions
  • No material is left for the kidneys to excrete
  • This is known as a “super scan”
spinal neoplasms diagnostic imaging el paso tx.
  • Sagittal Lumbar and Lower Thoracic MRI. Multiple metastasis are noted on T1 (above right) and T2 (above left)  WI as hypointense foci of marrow replacement of the vertebral bodies in a patient with Hx of Prostate CA
  • MR imaging protocol with T1, T2, and T1+C gad can be used in many cases if x-radiography is unrewarding or questionable
  •  MRI can reveal bone marrow changes due to bone marrow replacement by Mets and surrounding edema
  • Typically blastic Mets appear as abnormally decreased signal intensity (hypointense) lesions on T1 and T2 pulse sequences
  • Purely lytic Mets often appear as hypo-intense on T1 and hype-intense on T2
  • Increased gadolinium uptake may also be evident on T1+C fat suppressed sequence d/t increased vascularity of malignant foci especially in very aggressive vascular neoplasms

Spinal Neoplasms

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Professional Scope of Practice *

The information herein on "Spinal Neoplasms Diagnostic Imaging Approach Part I" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.

Blog Information & Scope Discussions

Our information scope is limited to Chiropractic, musculoskeletal, acupuncture, physical medicines, wellness, contributing etiological viscerosomatic disturbances within clinical presentations, associated somatovisceral reflex clinical dynamics, subluxation complexes, sensitive health issues, and/or functional medicine articles, topics, and discussions.

We provide and present clinical collaboration with specialists from various disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the injuries or disorders of the musculoskeletal system.

Our videos, posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate to and directly or indirectly support our clinical scope of practice.*

Our office has reasonably attempted to provide supportive citations and has identified the relevant research studies supporting our posts. We provide copies of supporting research studies available to regulatory boards and the public upon request.

We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez, DC, or contact us at 915-850-0900.

We are here to help you and your family.

Blessings

Dr. Alex Jimenez DC, MSACP, RN*, CCST, IFMCP*, CIFM*, ATN*

email: coach@elpasofunctionalmedicine.com

Licensed as a Doctor of Chiropractic (DC) in Texas & New Mexico*
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Disclaimer *

The information herein is not intended to replace a one-on-one relationship with a qualified health care professional, licensed physician, and is not medical advice. We encourage you to make your own health care decisions based on your research and partnership with a qualified health care professional. Our information scope is limited to chiropractic, musculoskeletal, physical medicines, wellness, sensitive health issues, functional medicine articles, topics, and discussions. We provide and present clinical collaboration with specialists from a wide array of disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the injuries or disorders of the musculoskeletal system. Our videos, posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate to and support, directly or indirectly, our clinical scope of practice.* Our office has made a reasonable attempt to provide supportive citations and has identified the relevant research study or studies supporting our posts. We provide copies of supporting research studies available to regulatory boards and the public upon request.

We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez or contact us at 915-850-0900.

Dr. Alex Jimenez DC, MSACP, CCST, IFMCP*, CIFM*, ATN*

email: coach@elpasofunctionalmedicine.com

phone: 915-850-0900

Licensed in Texas & New Mexico *

Dr. Alex Jimenez DC, MSACP, CIFM, IFMCP, ATN, CCST
My Digital Business Card

Post Disclaimer

Professional Scope of Practice *

The information herein on "Knee Pain & Acute Trauma Diagnosis Imaging Part II | El Paso, TX" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.

Blog Information & Scope Discussions

Our information scope is limited to Chiropractic, musculoskeletal, acupuncture, physical medicines, wellness, contributing etiological viscerosomatic disturbances within clinical presentations, associated somatovisceral reflex clinical dynamics, subluxation complexes, sensitive health issues, and/or functional medicine articles, topics, and discussions.

We provide and present clinical collaboration with specialists from various disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the injuries or disorders of the musculoskeletal system.

Our videos, posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate to and directly or indirectly support our clinical scope of practice.*

Our office has reasonably attempted to provide supportive citations and has identified the relevant research studies supporting our posts. We provide copies of supporting research studies available to regulatory boards and the public upon request.

We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez, DC, or contact us at 915-850-0900.

We are here to help you and your family.

Blessings

Dr. Alex Jimenez DC, MSACP, RN*, CCST, IFMCP*, CIFM*, ATN*

email: coach@elpasofunctionalmedicine.com

Licensed as a Doctor of Chiropractic (DC) in Texas & New Mexico*
Texas DC License # TX5807, New Mexico DC License # NM-DC2182

Licensed as a Registered Nurse (RN*) in Florida
Florida License RN License # RN9617241 (Control No. 3558029)
Compact Status: Multi-State License: Authorized to Practice in 40 States*

Presently Matriculated: ICHS: MSN* FNP (Family Nurse Practitioner Program)

Dr. Alex Jimenez DC, MSACP, RN* CIFM*, IFMCP*, ATN*, CCST
My Digital Business Card