Step 1 of 6
EV · MOD–HIGHInitial Presentation & Triage
Detection mode · symptom screen · urgent-vs-elective triage
Thyroid enlargement reaches the clinician through six common entry points: visible neck swelling, palpable enlargement on routine examination, incidental imaging finding (carotid Doppler, neck CT), thyroid-dysfunction symptoms, compressive symptoms, or cervical lymphadenopathy. The first decision is whether this is an urgent presentation requiring same-day assessment or an elective workup.
Same-day red flags — stridor, respiratory distress, rapid enlargement, vocal-cord paralysis, or features of anaplastic carcinoma (elderly + rapidly enlarging hard mass + airway compromise) — trigger the urgent-triage pathway in Step 2.
Everything else proceeds to elective workup via history, examination, biochemistry, and ultrasound.
- Visible neck swelling
- Palpable thyroid enlargement
- Incidental imaging finding
- Symptoms of thyroid dysfunction
- Compressive symptoms (dysphagia · stridor · orthopnoea)
- Solitary thyroid nodule
- Cervical lymphadenopathy
Key statistics
Palpable nodule prevalence
Up to 60% on incidental ultrasound — most are benign
★ High-yield pearls (chapter-wide)
- TSH + thyroid ultrasound is the universal first-line workup — everything else is secondary.
- When TSH is suppressed, scintigraphy is the discriminator: diffuse high (Graves), low/absent (thyroiditis), heterogeneous focal (toxic MNG), single hot nodule (toxic adenoma).
- Total thyroidectomy is preferred over subtotal in Graves — leaving residual gland risks recurrence.
- RAI worsens Graves' ophthalmopathy — relative contraindication in active eye disease; surgery is the alternative.
- Bethesda IV (follicular neoplasm) cannot distinguish carcinoma from adenoma on cytology — diagnostic lobectomy is the standard.
- Suspect primary thyroid lymphoma in a rapidly growing painless mass on an established Hashimoto background — core biopsy, not FNA.
- Anaplastic thyroid carcinoma is one of the few solid tumours where airway management trumps oncology in the first 24 hours.
- Lateral-neck nodal mapping on US changes the operation in PTC — never operate on PTC without comprehensive lateral-neck imaging.
- Pemberton's sign is a useful bedside test for retrosternal compression — facial plethora on raised arms.
- Iodinated contrast should be avoided for 4–6 weeks before RAI — plan imaging accordingly.
Evidence base
3 sources- HIGH
Haugen BR et al. · Thyroid · 2016International guidelinePMID 26462967
ATA 2015 management guideline for adult thyroid nodules and DTC — anchors nodule workup, FNAB thresholds, lobectomy vs total thyroidectomy, RAI indications, TSH suppression targets, and dynamic risk stratification across this chapter. Vol 26(1):1-133.
- HIGH
Hegedüs L · N Engl J Med · 2004Narrative clinical reviewPMID 15496625
Foundational NEJM clinical-practice review of the thyroid nodule — bedside-to-management framework. Vol 351(17):1764-1771.
- HIGH
Gharib H et al. · Endocr Pract · 2016International guideline (AACE/ACE/AME)PMID 27167915
Companion endocrinology-society guideline to the ATA — nodule diagnosis, ultrasound feature interpretation, FNAB indications, and management. Vol 22(5):622-639.