Preoperative Imaging Thyroid Cancer

Publication Date: January 9, 2015

Key Points

Key Points

Though thyroid cancer is associated with high overall survival rates, exceeding 90% for most subtypes, the risk of recurrence has been reported to be as high as 35%.

Most of these recurrences are detected within the first five years after diagnosis and thus may actually represent persistent rather than truly recurrent disease.

It is known that the majority of reoperations for thyroid cancer are preventable and that inadequate preoperative imaging frequently is the root cause of incomplete initial surgery.

Ultrasound remains the most important imaging modality in the evaluation of thyroid cancer and should be used routinely to assess both the primary tumor and all associated cervical lymph node basins preoperatively.

Ultrasound evaluation (‘‘mapping’’) of bilateral lymph node compartments 1–6 should be performed routinely in the preoperative evaluation of patients with definitive cytologic evidence of carcinoma (positive FNA).

Screening for distant metastasis is generally not performed prior to initial surgery for differentiated thyroid cancers.

Diagnosis

...agnosis...

...unctional Imaging...

...ng with positron emission tomography (PET), PET...


...asound-guided Fine-needle Aspiration of...

...aluation (‘‘mapping’’) of bilatera...

...stant metastasis is generally not...

...mandatory that the needle tip is visual...


...1. Preoperative Ultrasound Scanning Tech...


...ound Features Predictive of Malignant Lymph Node...


...ure 1. Ultrasound Features of Benign L...


...trasound Features of Malignant Lymph NodesA)...


...ted Tomography and Magnetic Resonan...


.... Findings That May Prompt Axial Imaging Ho...


...3. Cross-sectional Images of Invasive Prima...