Neck Technetium Uptake in Post-Operation PTC Patients
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Thyroid remnant after thyroidectomy is a major predictor for future recurrence of thyroid cancers; for which assessment, the accuracy of imaging is not optimal. The study aimed to evaluate the value of the technetium uptake in the neck compared with neck ultrasonography, this application is used to predict future recurrence of differentiated thyroid cancer (DTC).

The neck technetium uptake (NTU) value was acquired 20 min after injection of 1 mCi technetium by a camera. Patients were scheduled for forthcoming iodine ablation. Baseline risk factors were collected. Patients were followed for 10.5 months when the records of the whole body scan, thyroglobulin, anti-thyroglobulin, neck ultrasonography, and the history of repeated iodine and surgical treatments were collected.

The correlation between NTU and recurrence was studied. Out of 73 participants, 63 patients completed the study with established recurrence status and a valid NTU assessment.

--Baseline lymph node invasion, extra-thyroid extension, and tumor size were higher in patients with future recurrence.

--But the NTU was similar in subjects with and without recurrence.

--NTU was significantly lower in subjects with surgeries more extensive than thyroidectomy.

In particular, recurrence cannot be predicted by NTU, but NTU may be used as a surrogate factor to determine the extent and completeness of the thyroidectomy surgery.

Indian Journal of Surgery
Source: https://doi.org/10.1007/s12262-021-02840-z
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