Thyroglossal cyst in detail for 50 marks with diagram and flow charts from Scott Brown, Cummings, stell and marans, Zakir Hussain, dhingra, hazarika and related articles with recent advances according to rguhs university
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thyroglossal duct cyst
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thyroglossal duct cyst RGUHS 50 marks answer embryology Sistrunk procedure recent advances 2023 2024
SUGGESTED MARKS DISTRIBUTION (RGUHS 50-Mark Format)
| Section | Suggested Marks |
|---|---|
| Definition + Incidence | 2 |
| Embryology (detailed) | 10 |
| Pathology (gross + microscopy) | 5 |
| Clinical features + Sites | 8 |
| Investigations + Flowchart | 5 |
| Differential Diagnosis | 5 |
| Treatment (Sistrunk - detailed steps) | 10 |
| Complications + Recurrence | 3 |
| Malignancy in TGDC | 5 |
| Recent Advances | 5 |
| TOTAL | 58 (compress as needed for 50) |
IMPORTANT EXAMINER HIGHLIGHTS (RGUHS Tips)
- Never forget - "moves on swallowing AND tongue protrusion" - this is the pathognomonic sign asked in every exam
- Sistrunk 1920 - year must be correct; the reason for including hyoid bone is the embryological relationship - examiners test this
- Never excise without USS confirming normal thyroid - a classic pitfall question: "what if you excise a lingual thyroid thinking it is TGDC?"
- Recurrence rates - 46% simple excision vs 5% Sistrunk - frequently asked
- PTC is the commonest malignancy in TGDC - not squamous cell carcinoma
- For recent advances: Endoscopic/robotic (Du et al. 2024), risk-stratified TDCC management (Thimsen et al. 2025), BRAF molecular markers
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