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Thyroid scintigrams illustrating the major patterns of thyroid disease with one to six areas of sodium pertechnetate uptake in the 2096 cats. (a) One nodule (unilateral disease). (b) Two nodules (bilateral cervical disease). (C) Three nodules (bilateral disease with third ectopic midline nodule in thorax). (d) Six nodules (multifocal disease resulting from suspected thyroid carcinoma)
