THYROID (ENDOCRINE) Exam Question
and Answers Latest Updates 2026 Graded A+
These questions are commonly asked in medical student finals,
OSCEs, MRCP PACES, and clinical examinations focusing on
thyroid status assessment. They test knowledge of clinical signs,
differential diagnoses, and examination findings. Answers are
elaborated with explanations, pathophysiology, and clinical
relevance.
1: What is **silent thyroiditis** vs **postpartum thyroiditis**?
<<Answer>>
- Silent: Painless destructive thyroiditis, often autoimmune,
transient thyrotoxic → hypo → recovery.
- Postpartum: Occurs 1–6 months post-delivery, similar phases,
higher risk if TPO positive or type 1 diabetes.
,**Elaboration:** Both low uptake on scan. Postpartum affects
5–10% deliveries; screen high-risk. Levothyroxine if
symptomatic hypo; avoid ATDs in toxic phase.
2: Describe **ectopic thyroid tissue** locations and clinical
implications.
<<Answer>>Lingual (base of tongue – most common), sublingual,
thyroglossal duct, intrathoracic (mediastinal), struma ovarii
(ovarian teratoma).
Implications: May be only functioning thyroid tissue; remove
only after confirming cervical thyroid present (scan). Lingual
causes dysphagia/bleeding.
**Elaboration:** Technetium/Tc-99m scan to locate. Carcinoma
can arise in ectopic tissue.
3: What is the role of **PET-CT** in thyroid disease?
<<Answer>>
- FDG-PET: Aggressive/dedifferentiated thyroid cancers
(radioiodine-negative), anaplastic, Hürthle cell.
- Not routine for differentiated (low avidity).
,- Incidental focal uptake in nodules → higher malignancy risk
(~30–40%).
**Elaboration:** Guides biopsy of suspicious incidentalomas.
PSMA or other tracers emerging for redifferentiation.
4: On palpation of the thyroid, what features suggest a
**diffuse goiter** in Graves' disease?
<<Answer>>Smooth, symmetrically enlarged thyroid, often with
a audible/palpable bruit (due to increased vascularity).
**Elaboration:** Graves' disease causes uniform hyperplasia
from TSH receptor stimulation. Bruit indicates high blood flow
from angiogenesis and hyperfunction. Tenderness is absent
(unlike thyroiditis).
5: What palpation findings suggest **Hashimoto's
thyroiditis**?
<<Answer>>Firm, irregular, "woody" or bosselated texture; may
be diffusely enlarged or nodular; usually non-tender.
**Elaboration:** Autoimmune destruction leads to fibrosis and
lymphocytic infiltration, giving a hard, irregular feel. It often
, causes hypothyroidism. Difficult to distinguish clinically from
carcinoma without further investigation (e.g., ultrasound/FNA).
6: A patient has a **solitary thyroid nodule**. What are
possible causes, and which features raise concern for
malignancy?
<<Answer>>Possible causes: Benign adenoma, colloid cyst,
dominant nodule in multinodular goiter, carcinoma
(papillary/follicular).
Concerning features: Hard consistency, fixed to tissues,
associated cervical lymphadenopathy, rapid growth, history of
radiation exposure.
**Elaboration:** Most solitary nodules are benign (>90%), but
malignancy risk is higher than in multinodular goiter. Red flags
prompt fine-needle aspiration (FNA) per guidelines. Mobility
with swallowing confirms thyroid origin.
7: How would you distinguish a thyroid swelling from other
neck lumps on examination?
<<Answer>>Thyroid swellings move upwards on swallowing (due
to attachment to trachea via pre-tracheal fascia). Ask patient to
and Answers Latest Updates 2026 Graded A+
These questions are commonly asked in medical student finals,
OSCEs, MRCP PACES, and clinical examinations focusing on
thyroid status assessment. They test knowledge of clinical signs,
differential diagnoses, and examination findings. Answers are
elaborated with explanations, pathophysiology, and clinical
relevance.
1: What is **silent thyroiditis** vs **postpartum thyroiditis**?
<<Answer>>
- Silent: Painless destructive thyroiditis, often autoimmune,
transient thyrotoxic → hypo → recovery.
- Postpartum: Occurs 1–6 months post-delivery, similar phases,
higher risk if TPO positive or type 1 diabetes.
,**Elaboration:** Both low uptake on scan. Postpartum affects
5–10% deliveries; screen high-risk. Levothyroxine if
symptomatic hypo; avoid ATDs in toxic phase.
2: Describe **ectopic thyroid tissue** locations and clinical
implications.
<<Answer>>Lingual (base of tongue – most common), sublingual,
thyroglossal duct, intrathoracic (mediastinal), struma ovarii
(ovarian teratoma).
Implications: May be only functioning thyroid tissue; remove
only after confirming cervical thyroid present (scan). Lingual
causes dysphagia/bleeding.
**Elaboration:** Technetium/Tc-99m scan to locate. Carcinoma
can arise in ectopic tissue.
3: What is the role of **PET-CT** in thyroid disease?
<<Answer>>
- FDG-PET: Aggressive/dedifferentiated thyroid cancers
(radioiodine-negative), anaplastic, Hürthle cell.
- Not routine for differentiated (low avidity).
,- Incidental focal uptake in nodules → higher malignancy risk
(~30–40%).
**Elaboration:** Guides biopsy of suspicious incidentalomas.
PSMA or other tracers emerging for redifferentiation.
4: On palpation of the thyroid, what features suggest a
**diffuse goiter** in Graves' disease?
<<Answer>>Smooth, symmetrically enlarged thyroid, often with
a audible/palpable bruit (due to increased vascularity).
**Elaboration:** Graves' disease causes uniform hyperplasia
from TSH receptor stimulation. Bruit indicates high blood flow
from angiogenesis and hyperfunction. Tenderness is absent
(unlike thyroiditis).
5: What palpation findings suggest **Hashimoto's
thyroiditis**?
<<Answer>>Firm, irregular, "woody" or bosselated texture; may
be diffusely enlarged or nodular; usually non-tender.
**Elaboration:** Autoimmune destruction leads to fibrosis and
lymphocytic infiltration, giving a hard, irregular feel. It often
, causes hypothyroidism. Difficult to distinguish clinically from
carcinoma without further investigation (e.g., ultrasound/FNA).
6: A patient has a **solitary thyroid nodule**. What are
possible causes, and which features raise concern for
malignancy?
<<Answer>>Possible causes: Benign adenoma, colloid cyst,
dominant nodule in multinodular goiter, carcinoma
(papillary/follicular).
Concerning features: Hard consistency, fixed to tissues,
associated cervical lymphadenopathy, rapid growth, history of
radiation exposure.
**Elaboration:** Most solitary nodules are benign (>90%), but
malignancy risk is higher than in multinodular goiter. Red flags
prompt fine-needle aspiration (FNA) per guidelines. Mobility
with swallowing confirms thyroid origin.
7: How would you distinguish a thyroid swelling from other
neck lumps on examination?
<<Answer>>Thyroid swellings move upwards on swallowing (due
to attachment to trachea via pre-tracheal fascia). Ask patient to
