Hybrid SPECT/CT evaluation of Marine-Lenhart syndrome.

Marine-Lenhart syndrome has been described as a variant of Graves disease with the following criteria: (1) the thyroid scan shows an enlarged gland and 1 or 2 poorly functioning nodules; (2) the nodule is TSH dependent and the paranodular tissue is TSH independent; (3) after endogenous or exogenous TSH stimulation, the return of function in the nodule can be demonstrated; and (4) the nodule is histologically benign. We report a 57-year-old woman with Marine-Lenhart syndrome evaluated with technetium scanning and hybrid SPECT/CT.

Hybrid SPECT/CT evaluation of dual ectopia of thyroid in the absence of orthotopic thyroid gland.

Ectopic thyroid tissue (ETT) refers to all cases in which the thyroid gland is present at a location other than its usual site. The prevalence of ETT is approximately 1 per 100,000 to 300,000 persons and is reported to occur in 1 of 4000 to 8000 patients with thyroid disease. Multiple ectopia of the thyroid is extremely rare, with fewer than 35 cases published in literature to date.