A 42-year-old woman from Delhi presents with a 2-year history of progressive neck swelling and recent-onset dysphagia. On examination, a firm, multinodular goiter is palpable with deviation of the trachea to the right. Thyroid function tests are normal. Ultrasound shows multiple nodules (largest 3.5 cm) with heterogeneous echotexture; fine-needle aspiration cytology (FNAC) of the dominant nodule is benign (Bethesda II). The patient reports no family history of thyroid disease or radiation exposure. What is the most appropriate indication for thyroid surgery in this case?

Explanation

## Indications for Thyroid Surgery in Benign Disease **Key Point:** Compressive symptoms (dysphagia, dyspnea, stridor) with objective evidence of tracheal deviation constitute a definitive surgical indication, regardless of benign cytology or normal TSH. ### Surgical Indications in Benign Thyroid Disease | Indication | Rationale | Urgency | |---|---|---| | **Compressive symptoms** (dysphagia, dyspnea, stridor) | Airway/esophageal obstruction risk | Elective | | **Tracheal/esophageal deviation** on imaging | Anatomic compression documented | Elective | | **Cosmetic concern** (patient preference) | Quality of life | Elective | | **Hyperthyroidism** (medical failure) | Antithyroid drugs/RAI contraindicated | Elective | | **Suspicious nodule** (Bethesda III–VI) | Malignancy risk | Urgent | | **Retrosternal extension** | Risk of superior vena cava syndrome | Elective | **High-Yield:** Benign nodules >3 cm with compressive symptoms and imaging evidence of tracheal deviation meet the gold standard for surgery. FNAC Bethesda II (benign) does NOT preclude surgery when compression is present. ### Why Surgery Is Indicated Here 1. **Compressive symptoms present:** Dysphagia is an objective symptom of obstruction. 2. **Anatomic evidence:** Tracheal deviation confirms mass effect. 3. **Nodule size:** 3.5 cm is substantial and likely contributing to compression. 4. **Normal TSH:** Rules out hyperthyroidism as the driver; compression is the indication. **Clinical Pearl:** In benign multinodular goiter, surgery is NOT indicated by size, multinodularity, or benign cytology alone. The presence of **compressive symptoms + objective imaging evidence** (deviation, narrowing) is the surgical trigger. [cite:Sabiston Textbook of Surgery Ch 37] ### Extent of Surgery ```mermaid flowchart TD A[Benign Multinodular Goiter<br/>with Compression]:::outcome --> B{Hyperthyroid?}:::decision B -->|Yes| C[Total Thyroidectomy]:::action B -->|No| D{Dominant nodule<br/>suspicious?}:::decision D -->|Yes| E[Total Thyroidectomy]:::action D -->|No| F[Subtotal or Total<br/>Thyroidectomy]:::action C --> G[Lifelong TSH suppression<br/>+ levothyroxine]:::outcome E --> G F --> H{Recurrence risk<br/>acceptable?}:::decision ``` **Tip:** In this case, given normal TSH and benign FNAC, either subtotal or total thyroidectomy is acceptable; total is preferred to avoid recurrent goiter requiring reoperation.