title: Diffuse skeletal metastasis and low thyroglobulin level in a pediatric patient with papillary thyroid carcinoma.
abstract: Thyroglobulin (Tg) is frequently measured in follow-up of patients with differentiated thyroid carcinoma. A low stimulated Tg level (<1 ng/ml) associated with normal neck ultrasonography is considered as the most reliable criteria for complete remission in low risk patients. We are reporting a case of pediatric thyroid cancer with diffuse skeletal metastasis associated with low serum Tg level bringing a point of caution in evaluation of patients with low Tg.
authors.affiliation: Nuclear Medicine Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Seyed Rasoul
authors.initials: SR
authors.lastname: Zakavi
authors.affiliation: Nuclear Medicine Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Narjess
authors.initials: N
authors.lastname: Ayati
authors.affiliation: Thyroid Center and Clinic for Radiology and Nuclear Medicine, St. Elisabeth Hospital, Dorsten, Germany.
authors.forename: Jamshid
authors.initials: J
authors.lastname: Farahati
authors.affiliation: Department of Radiology, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Behrooz
authors.initials: B
authors.lastname: Davachi
keywords: Bone metastasis; papillary; thyroglobulin; thyroid cancer; whole body iodine scans