hot nodule

hot nod·ule

a thyroid nodule with a much higher uptake of radioactive iodine than the surrounding parenchyma; usually benign but sometimes causing hyperthyroidism.
A focal increase in radioisotope uptake on a 123I scintillation scan in a solid organ—e.g., liver or thyroid—seen by immunoscintigraphy. Thyroid hot nodules often correspond to toxic nodular or multinodular goiter, as functional thyroid lesions suppress TSH synthesis; they are rarely malignant

hot nodule

Nuclear medicine A focal ↑ in radioisotope uptake on a 123I scintillation scan in a solid organ–eg, liver or thyroid, seen by immunoscintigraphy; thyroid HNs often correspond to toxic nodular or multinodular goiter, as functional thyroid lesions suppress TSH synthesis; HNs are rarely malignant. See Scintigraphy. Cf Cold nodule, Warm nodule.

hot nod·ule

(hot nod'yūl)
A thyroid nodule with a much higher uptake of radioactive iodine than the surrounding parenchyma; usually benign but sometimes causing hyperthyroidism.

hot nod·ule

(hot nod'yūl)
Thyroid nodule with a much higher uptake of radioactive iodine than the surrounding parenchyma.
References in periodicals archive ?
5-cm nodule; thyroid scan showed hot nodule with cold areas 2 15/F Warm nodule noted on thyroid scan 3 11/M Not performed Case No.
Thyroid ultrasound showed a large nodule in the right lobe of the thyroid gland, and thyroid scan showed a hot nodule.
We report an unusual case of an autonomous hot nodule suppressing the remainder of the gland that was found to be a papillary carcinoma, follicular variant, on final pathological diagnosis.
Overall, a cold nodule was associated with a significantly higher incidence of malignancy than was a hot nodule (sensitivity = 91%; specificity = 19%; accuracy = 38%; [chi square] = 7.
In our study, hot nodules were found to be cancerous in two of 35 patients (5.
Its role in identifying hot nodules and areas of autonomous thyroid function is well established.
Fine-needle aspriration of hot nodules, which are generally benign and represent follicular adenomas, may result in indeterminate cytologic findings.