PMC7527673_01
An enhanced CT of the neck showed a 11 x 10 mm well enhancing and circumscribed soft tissue mass abutting posterior aspect of the left thyroid lobe. (arrow).
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Contrast-enhanced CT of the neck showed a 11 x 10-mm, well-enhancing, well-circumscribed soft tissue mass abutting the posterior aspect of the left thyroid lobe (Fig. 1).
Representative thyroid and PG ICG fluorescence images.. (a) White light image: Color of the thyroid and PG was similar and identification of PG was indefinite.. (b) Full color near infrared image: Both PG and thyroid had ICG fluorescence, but intensity of the thyroid fluorescence was a little lower than that of the PG fluorescence.. (c) Full color near infrared image using threshold adjustable function of VISION SENSE : We adjust lower 50% of NIR signal value should not show up, and after that clear contour of PG was able to be obtained.
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Since abnormal uptake of Tc-99m-MIBI was located in the lower pole area, we were unable to readily decide whether this area represented the PG (Fig. 2a). ICG was injected intravenously. ICG fluorescence appeared after 45 s from the left thyroid lobe to the PG, and contour of PG was unclear (Fig. 2b). We were able to identify the PG shortly thereafter (Fig. 2c).