Papillary Thyroid Cancer in a Child with Progressive Transformation of Germinal Centers.
2016
Objectives. To describe the presentation and management of a child with Progressive Transformation of
Germinal Centers(PTGC), an uncommon condition characterized by significant persistent lymphadenopathy, who developed papillary thyroid carcinoma and to explore and review potential links between PTGC and neoplastic processes in the head and neck. Methods. Case presentation and literature review are used. Results. A 10-year-old female presented with a right parotid mass and
cervical lymphadenopathy. Multiple biopsies revealed PTGC without malignancy. Two years later, she developed fatigue and weight gain, and a
thyroid nodulewas found. Fine needle aspiration was strongly suggestive of papillary thyroid carcinoma. The patient underwent total thyroidectomy and central
neck dissectionwithout surgical management of the longstanding right lateral neck lymphadenopathy. Final pathology confirmed papillary thyroid carcinoma. She was treated with
radioactive iodinetherapy postoperatively and remains free of disease at three years of follow-up. Conclusions. PTGC is considered a benign condition but has previously been associated with Nodular Lymphocyte Predominant Hodgkin Lymphoma (NLPHL). This is the first reported case of
papillary thyroid cancerin a child with preexisting cervical PTGC and no defined risk factors for thyroid malignancy. No link has been established with thyroid carcinoma, but patients with PTGC may have a defect in immune surveillance that predisposes them to malignancy.
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