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Medicine

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Endocrine

Question
7 out of 18
 

Decreased Radio iodine uptake is seen in (LQ)



A Toxic multinodular goiter
B Grave's disease

C Toxic nodule
D Factitious thyrotoxicosis

Ans. D

Factitious thyroiditis

Isotope scan: (123I, 125I, 131I or 99Technetium pertechnetate).

1). Useful for determining the cause of hyperthyroidism.

2). Detect retrosternal goiter.

3). Ectopic thyroid tissue

4). Thyroid metastases (using whole body CT scan).

20% of 'cold' nodules are malignant. (MCQ)

Few neutral and almost no hot nodules are malignant. (MCQ)

Extra Edge:

1). Hyperthyroid with reduce RAIU

a. Factitious hyperthyroid

b. De Quervain thyroiditis (Sub acute thyroiditis)

2). Hypothyroid with increased RAIU = I2 deficiency Hypothyroid (endemic hypothyroid)

Endocrine Flashcard List

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