How should I urgently evaluate and manage a 72-year-old patient with new severe progressive shooting pain involving the shoulders, chest, and back, now unable to walk, and a close relative recently diagnosed with multiple myeloma?

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Immediate Urgent Evaluation for Suspected Spinal Cord Compression and Multiple Myeloma

This patient requires SAME-DAY urgent imaging with MRI of the entire spine to rule out spinal cord compression, which is a medical emergency that can result in permanent paralysis if not treated within hours. The combination of severe progressive pain across shoulders, chest, and back with new inability to walk in a 72-year-old with a family history of multiple myeloma is highly concerning for pathologic fracture with cord compression from possible multiple myeloma 1, 2, 1.

Immediate Actions Today

1. Urgent Neurologic Assessment

Perform a focused neurologic examination immediately:

  • Motor strength in all extremities (document specific muscle groups and grade 0-5)
  • Sensory level to identify any dermatomal loss
  • Rectal tone and perianal sensation (saddle anesthesia indicates cauda equina)
  • Deep tendon reflexes and presence of pathologic reflexes (Babinski sign)
  • Gait assessment if patient can attempt walking safely

The inability to walk suggests either severe pain limiting mobility OR neurologic compromise—you must distinguish between these immediately.

2. Emergency Imaging

Order STAT MRI of the entire spine (cervical, thoracic, lumbar) 1. MRI is specifically recommended when spinal cord compression is suspected and provides superior detail for detecting:

  • Vertebral compression fractures
  • Epidural masses
  • Spinal cord compression
  • Bone marrow involvement

If MRI is unavailable or contraindicated, obtain urgent CT of the spine, though this is inferior for detecting early cord compression 1.

3. Immediate Laboratory Workup

Draw blood TODAY for multiple myeloma screening 1, 3:

Essential labs:

  • Complete blood count with differential (check for anemia)
  • Comprehensive metabolic panel including calcium (hypercalcemia) and creatinine (renal insufficiency)
  • Serum protein electrophoresis (SPEP) with immunofixation
  • Serum-free light chains (kappa and lambda with ratio)
  • Quantitative immunoglobulins (IgG, IgA, IgM)
  • Beta-2 microglobulin and LDH (prognostic markers)
  • 24-hour urine collection for protein electrophoresis and immunofixation

These tests evaluate for the "CRAB" criteria (hypercalcemia, renal insufficiency, anemia, bone lesions) that define symptomatic multiple myeloma requiring treatment 1.

4. Skeletal Survey

Order a complete skeletal survey including spine, pelvis, skull, humeri, and femurs to detect lytic bone lesions 1, 2, 1. This can be done same-day or next day if MRI confirms myeloma-related pathology.

Clinical Reasoning

The patient's presentation is concerning for symptomatic multiple myeloma with pathologic vertebral fracture and possible spinal cord compression. Key red flags include:

  • Age 72 years (median age for MM diagnosis is 65-72 years) 1, 4
  • Severe progressive pain in axial skeleton distribution (classic for vertebral involvement)
  • Inability to walk (suggests either severe pain from fracture OR neurologic compromise from cord compression)
  • Family history of multiple myeloma (though MM is not typically hereditary, this raises clinical suspicion)

Spinal cord compression occurs in 5-10% of myeloma patients and represents an oncologic emergency. Without treatment within 24-48 hours, permanent paralysis can result, devastating the patient's quality of life and functional independence 2.

Common Pitfalls to Avoid

  1. Do NOT delay imaging to wait for lab results—if there is any concern for cord compression based on neurologic exam, MRI must be done emergently regardless of lab availability
  2. Do NOT assume this is musculoskeletal pain from degenerative disease given the rapid progression and inability to walk
  3. Do NOT order only lumbar spine imaging—myeloma can affect any vertebral level, and the pain distribution suggests thoracic involvement
  4. Do NOT send the patient home with pain medication and follow-up—this requires same-day evaluation and likely hospital admission

Next Steps Based on Imaging Results

If MRI shows spinal cord compression:

  • Immediate hospital admission
  • Urgent hematology/oncology consultation
  • High-dose dexamethasone (typically 40mg daily) to reduce cord edema
  • Urgent radiation oncology consultation for emergent radiation therapy
  • Neurosurgery consultation if surgical decompression needed

If MRI shows vertebral fractures without cord compression:

  • Hematology/oncology referral (can be urgent outpatient if labs confirm MM)
  • Pain management with analgesics
  • Consider vertebroplasty/kyphoplasty for symptomatic fractures
  • Initiate bisphosphonates once diagnosis confirmed

If imaging is negative but labs suggest myeloma:

  • Proceed with bone marrow biopsy (≥10% clonal plasma cells required for diagnosis) 1
  • Cytogenetics and FISH studies on bone marrow for risk stratification 3

The diagnosis of symptomatic multiple myeloma requires ≥10% clonal bone marrow plasma cells PLUS evidence of end-organ damage (CRAB criteria) 1, 5, 6. This patient likely meets criteria based on clinical presentation, but confirmation requires the workup outlined above.

Your priority today is ruling out spinal cord compression—this takes precedence over confirming the myeloma diagnosis, as hours matter for neurologic outcomes.

References

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