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Head & Neck

Staging Tips: Drive the Read Off Resectability

Fellowship-level neuroradiology teaching by E. Brooke Schrickel, MD. Open this topic in the interactive reading room →

Core clinical idea

Know your lane in head & neck staging: concede T1–T2 to endoscopy and drive the imaging read off three resectability questions — deep fat invasion (T3), cartilage/adjacent-structure invasion (T4a), and unresectable spread to carotid/skull base/prevertebral/mediastinum (T4b). The report sets the surgical-vs-nonsurgical pathway.

Bottom line

Stage H&N from T3 up — fat invasion is T3, cartilage is T4a, carotid/prevertebral is unresectable T4b; concede T1–T2 to the scope.

Core workstation questions

  • Is there paraglottic/pre-epiglottic fat invasion (→ T3)?
  • Is there cartilage destruction or invasion of trachea/thyroid/strap muscles/mandible (→ T4a)?
  • Is the carotid encased, or is there prevertebral/skull-base/mediastinal extension (→ T4b)?
  • Is this early mucosal disease I should defer to endoscopy rather than overcall?
  • Am I inferring cord fixation (a clinical call) rather than claiming it from MRI?

What changes reporting / management

  • Explicitly hunt and report paraglottic/pre-epiglottic fat invasion — most common imaging-driven upstage to T3.
  • Describe cartilage destruction specifically (T4a) as a primary radiologist value-add.
  • Report carotid encasement and prevertebral/skull-base/mediastinal extension unambiguously — they make disease unresectable (T4b) and flip the patient to a non-surgical pathway.
  • When imaging is negative in early disease, say imaging is negative; do not downstage endoscopic findings.

Practical traps

  • Overcalling early (T1–T2) mucosal disease off CT/MRI when it belongs to endoscopy.
  • Missing subtle pre-epiglottic/paraglottic fat invasion (the key T3 finding).
  • Claiming cord fixation from imaging when it remains a clinical determination.
  • Reciting the site-by-site TNM grid instead of leading with the resectability decision.
  • Treating subsite size cutoffs as universal across edition/subsite.

Teaching pearls

  • We don't see early H&N cancers — we earn our value from T3 upward.
  • Pre-epiglottic/paraglottic fat invasion is automatically T3 — hunt for it.
  • Carotid encasement and prevertebral extension mean unresectable — report them unambiguously.
  • Cord fixation is inferred on MRI but stays a clinical call — flag, don't claim.

Source lectures

  • Quick Radiology Staging Tips

Educational material for radiology residents and neuroradiology fellows. Nothing here drives individual patient care, and it contains no patient data.