Dr. Bidhan Koirala — Head & Neck Oncosurgeon | Bharatpur, CMC Cancer Institute
📅 HamroPatro
🏥 Thyroid Oncosurgery

Thyroid Cancer Care
Diagnosis · Surgery · RAI · Recovery

थाइराइड क्यान्सर उपचार
निदान · सर्जरी · RAI · स्वस्थ जीवन

One of the most curable cancers — with expert care, most patients return to full, healthy lives. Understand your journey from first symptom to complete recovery.

🦋 Thyroid Gland 🔬 FNAC / TI-RADS ✂️ Thyroidectomy ☢️ RAI Therapy 💊 TSH Suppression
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What is Thyroid Cancer?

  • Cancer arising from the thyroid gland — the butterfly-shaped gland in the front of the neck
  • Papillary thyroid cancer (PTC) — most common (85%), excellent prognosis
  • Follicular thyroid cancer (FTC) — 10%, spreads via blood, still very treatable
  • Medullary thyroid cancer (MTC) — 3–4%, can run in families (RET mutation)
  • Anaplastic thyroid cancer (ATC) — rare but aggressive, requires urgent multimodal care
90%+ of thyroid cancers are papillary or follicular — both carry an excellent long-term prognosis with proper treatment.
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Symptoms — When to See a Doctor

  • A painless lump or swelling in the front of the neck
  • Voice change — hoarseness or persistent voice alteration
  • Difficulty swallowing (dysphagia)
  • Difficulty breathing or stridor (high-pitched sound on breathing)
  • Neck lymph node enlargement that persists beyond 2–3 weeks
  • Pain in the front of the neck occasionally radiating to ears
💡 Many thyroid cancers are painless in early stages and discovered incidentally on routine neck ultrasound. Don't wait for pain — a persistent lump always needs evaluation.
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Your Care Pathway — Step by Step

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Step 1
Clinical Exam
Neck palpation, voice assessment
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Step 2
Ultrasound
TI-RADS scoring of nodule
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Step 3
FNAC
Bethesda cytology report
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Step 4
NPL / Laryngoscopy
Vocal cord mobility check
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Step 5
CT / MRI
Advanced cases: check invasion
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Step 6
Surgery
Hemithyroidectomy or Total
🔬 After surgery, histopathology confirms final diagnosis and staging (pTNM). RAI, TSH suppression, or radiation is decided based on this report.
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Diagnosis in Detail

  • Ultrasound (TI-RADS) — First-line imaging; scores nodule risk from 1 (benign) to 5 (highly suspicious); guides biopsy decision
  • FNAC (Fine Needle Aspiration Cytology) — Bethesda I–VI classification determines next steps: observation, repeat, or surgery
  • NPL / Flexible Laryngoscopy — Checks vocal cord mobility before surgery; crucial baseline for recurrent laryngeal nerve monitoring
  • Thyroid function tests (TSH, T3, T4) — Most thyroid cancers do NOT affect hormone levels
  • Serum Calcitonin — Elevated in medullary thyroid cancer; important screening marker
  • CT / MRI neck & chest — Used in Bethesda V–VI or when invasion of trachea, oesophagus, or vessels is suspected
  • Molecular markers (BRAF, RAS) — Used in indeterminate FNAC to guide surgical extent
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Treatment — Complete Guide

✂️
Hemithyroidectomy
Removal of one lobe. Used for low-risk papillary/follicular cancer ≤4 cm, no lymph node involvement, no extra-thyroidal extension.
Risks: Bleeding 1–2% · Voice change (RLN) 1–3% · No calcium issues
⚕️
Total Thyroidectomy
Complete removal of both lobes. Required for tumours >4 cm, bilateral disease, lymph node metastasis, extra-thyroidal extension, or when RAI is planned.
Risks: Low calcium (transient 20–30%, permanent <2%) · RLN injury 1–5% · Rare airway issues
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Completion Thyroidectomy
Second surgery to remove remaining thyroid lobe when histopathology after hemi-thyroidectomy reveals high-risk features requiring total removal + RAI.
Same risks as total thyroidectomy, but slightly higher due to scar tissue
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Neck Dissection
Central (level VI) or lateral neck dissection when lymph node metastasis confirmed by imaging or intraoperatively. Performed simultaneously with thyroidectomy.
Risks: Accessory nerve injury · Chylous fistula · Shoulder weakness
☢️
Radioactive Iodine (RAI / I-131)
Oral radioactive iodine given after total thyroidectomy. Destroys residual thyroid tissue and metastatic cells that absorb iodine. Requires low-iodine diet + thyroid hormone withdrawal or rhTSH injection beforehand.
Side effects: Dry mouth · Salivary gland swelling · Nausea (temporary)
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TSH Suppression Therapy
Lifelong levothyroxine (T4) after total thyroidectomy. Replaces hormones AND suppresses TSH to prevent cancer stimulation. Dose adjusted by risk category.
Monitoring: Thyroglobulin + Anti-Tg + Ultrasound every 6–12 months
External Beam Radiation
Used in anaplastic thyroid cancer, iodine-non-avid differentiated cancer with local invasion, or medullary cancer with residual disease after surgery.
Side effects: Skin reaction · Dysphagia · Dry mouth
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Targeted Therapy / Chemotherapy
Kinase inhibitors (sorafenib, lenvatinib) for RAI-refractory differentiated cancer. Vandetanib / cabozantinib for progressive medullary cancer. Dabrafenib + trametinib for BRAF-mutant anaplastic cancer.
Monitored by medical oncologist; used in advanced/metastatic disease
🚨 In advanced disease with airway compromise, tracheostomy may be required to secure the airway before or during surgery. This decision is made jointly by the oncosurgeon and anaesthesia team.
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Prognosis — Survival by Type

Papillary (PTC)
>98%
10-year Overall Survival
Follicular (FTC)
85–95%
10-year Overall Survival
Medullary (MTC)
75–85%
10-year Overall Survival
Anaplastic (ATC)
Stage-
dependent
Requires urgent multimodal care
🌟 Thyroid cancer is one of the most curable of all cancers. The vast majority of patients — even those with lymph node spread — are cured with surgery ± RAI and live completely normal, long lives.
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Common Questions & Myths

Will I need to take medicine for life after surgery?
After total thyroidectomy, yes — daily levothyroxine (T4) replaces what your thyroid produced and suppresses TSH. It is a simple, once-a-day tablet and most patients tolerate it well with no side effects.
Is RAI (radioactive iodine) dangerous or painful?
RAI is an oral capsule or liquid. It is not painful. It specifically targets thyroid cells — side effects (dry mouth, mild nausea) are temporary. Most patients are discharged within 24–48 hours. It is a safe, established treatment used for 70+ years.
Will my voice change permanently after surgery?
Permanent voice change (recurrent laryngeal nerve injury) occurs in only 1–3% of cases when performed by an experienced surgeon using nerve monitoring. Temporary voice change (weeks) is more common. Specialist surgeons have significantly lower rates.
Any surgeon can operate thyroid cancer — do I need a specialist?
High-volume thyroid surgeons have significantly lower complication rates (voice change, low calcium) and better oncological outcomes. The initial surgery is the most important determinant of cure — it must be performed correctly the first time.
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Why Choose a Specialist Thyroid Oncosurgeon?

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Correct First SurgeryThe extent of the first surgery determines cure, RAI candidacy, and surveillance. Errors are irreversible.
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Nerve MonitoringIntraoperative recurrent laryngeal nerve (RLN) monitoring protects your voice.
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Parathyroid PreservationExpert technique preserves parathyroid glands, reducing calcium complications.
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Accurate StagingCorrect surgical staging determines whether RAI, TSH suppression level, and follow-up interval are needed.
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Multidisciplinary CareEndocrinology, nuclear medicine, oncology and pathology all coordinated for you.
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Structured Follow-upThyroglobulin monitoring, ultrasound, and RAI surveillance personalised to your risk category.
Choosing an experienced thyroid oncosurgeon is the single most important decision you can make for your outcome. The complication rate for voice change and low calcium drops significantly with volume and expertise.
Book a Consultation
Dr. Bidhan Koirala — Head & Neck Oncosurgeon | CMC Cancer Institute, Bharatpur
कर्मण्येवाधिकारस्ते मा फलेषु कदाचन Act on time without fear — early treatment saves life.
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