*THYROID IMAGING INTERPRETATION*

1.SOLITARY COLD NODULE
-ADENOMA
-ADENOMATOUS HYPERPLASIA
-COLLOID CYST
-PRIMARY THYROID CARCINOMA

2.MULTIPLE COLD NODULES
-MULTINODULAR GOITER

3.HOT NODULES
-ADENOMA -AUTONOMOUS FUNCTION

4.WARM NODULES
-ADENOMA-FUNCTIONING NON-AUTONOMOUS OR FUNCTIONING AUTONOMOUS

5.OWL EYE SIGN
-TOXIC NODULAR GOITER

6.FISH-EYE SIGN
-ADENOMA

7.UPTAKE IN ONLY ONE PORTION OR ONE LOBE
-FOLLOWING SURGERY
-HEMIAGENESIS
-HYPERFUNCTIONING AUTONOMOUS ADENOMA

8.DISPARATE RESULTS BETWEEN TECHNETIUM AND IODINE
-ADENOMATOUS HYPERPLASIA
-FOLLICULAR ADENOMA
-PRIMARY TYROID CARCINOMA

9.DIFFUSED INCREASED ACTIVITY
-HYPERTHYROIDISM

10.DIFFUSELY DECREASED ACTIVITY OR NON-VISUALIZATION
-ANTITHYROID MEDICATION
-INCREASED IODINE POOL-RECENT CONTRAST MEDIA STUDY OR EXOGENOUS IODINE
-THYROID SUPPRESSION SECONDARY TO THYROID REPLACEMENT THERAPY

11.EXTRATHYROIDAL ACTIVITY
-ECTOPIC THYROID-SUBSTERNAL,SUBLINGUAL,PYRAMIDAL LOBE
-METASTATIC THYROID CARCINOMA
-PHARYNX/ESOPHAGUS-SWALLOWED SECRETIONS
-PHYSIOLOGIC CONCENTRATION-SALIVARY GLANDS, GI TRACT, BREAST, ETC

12.ELEVATED UPTAKE
-GEOGRAPHIC VARIATION
-GRAVES' DISEASE
-TOXIC ADENOMA
-TOXIC MULTINODULAR GOITER

13.DECREASED UPTAKE
-HYPOTHYROIDISM-PRIMARY, SECONDARY, OR TERTIARY
-MEDICATIONS OTHER THAN THYROID MEDICATION
-RECENT IODINE LOAD
-THYROID MEDICATIONS
-THYROIDITIS-ACUTE, SUBACUTE, OR CHRONIC

14.LOW T4 AND ELEVATED UPTAKE
-OVERTREATMENT WITH ANTITHYROID DRUGS
-THYROIDITIS-SUBACUTE AND CHRONIC

15.ELEVATED T4 AND LOW OR NORMAL THYROID UPTAKE
-EXOGENOUS IODINE ADMINISTRATION (CONTRAST, MEDICATIONS,ETC.)
-THYROID MEDICATIONS
-THYROIDITIS-SUBACUTE OR CHRONIC.

16.CLINICAL SYNDROMES ASSOCIATED WITH HYPERTHYROIDISM
-GRAVES' DISEASE
-TOXIC MULTINODULAR GOITER.


* THYROID-USEFUL TIPS *
*THYROID CLINICAL APPLICATIONS*
* ENDOCRINE *