Abstract
Thyroid follicular carcinomas account for 5% to 10% of all thyroid cancers and are classified as minimally or widely invasive. Minimally invasive thyroid follicular carcinomas rarely show distant metastasis and are thus thought to have a relatively good prognosis. We report a case of minimally invasive follicular thyroid carcinoma that became apparent after mandibular metastasis. The patient was aware of mobility of the right mandibular second molar. After the tooth was extracted at a family dental clinic, the wound healed poorly. The patient consulted a former doctor of our hospital. A biopsy was performed and the pathological diagnosis was metastasis from a follicular thyroid carcinoma. The clinical diagnosis was follicular thyroid carcinoma with mandibular metastasis and sternal multiple metastases. The patient underwent total thyroidectomy and mandibular bone segmental resection, followed by reconstruction with a vascularized latissimus dorsi muscle dermal flap. Radioactive iodine was given as postoperative therapy. There has been no tumor recurrence at the surgical site as of 1 year 1 month postoperatively, and the patient maintains a general diet.
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