51 years old, Female, Reason: evaluate for neck mass History: neck mass for past 4 months, freely mobile and nontender RIGHT LOBE MEASUREMENTS: 5.4 x 1.4 x 1.8 centimetersLEFT LOBE MEASUREMENTS: 5.2 x 1.4 x 1.8 cmISTHMUS MEASUREMENTS: 0.7 cmRIGHT LOBE: Hypoechoic spongiform nodule in the inferior right thyroid lobe without peripheral capsule measures 0.6 x 2.5 x 0.4 cm, which is favored to represent colloid nodule. There is no calcification within this nodule.LEFT LOBE: Solid appearing left inferior thyroid lobe nodule has a discontinuous hypoechoic rim measuring 1.0 x 0.7 x 0.4 cm. This nodule is amenable to biopsy. There is no calcification within this nodule.ISTHMUS: There is an anechoic well defined, semi-complex 1.8 x 1.4 x 0.6 centimeter nodule which partially deforms the trachea. There is not significant nodularity within the cystic structure itself. There is thyroid tissue around this entire structure. The structure may represent a minimally complex colloid cyst or less likely a thyroglossal duct cyst.PARATHYROID GLANDS: No significant abnormality noted.LYMPH NODES: No significant abnormality noted.OTHER: No significant abnormality noted.
1. Midline anechoic cystic structure which minimally deforms the trachea is favored to represent a mildly complex colloid cyst versus less likely a thyroglossal duct cyst.2. Solid appearing left inferior lobe nodule is indeterminate on this exam and is amenable to biopsy.3. Subcentimeter spongiform right thyroid nodule is favored to represent a colloid cyst.