A case of primary papillary carcinoma arising in a thyroglossal duct c
yst is reported in a young girl. This is a rare finding, with only fiv
e pediatric cases in the total of 115 cases reported in the literature
. Subsequent management is described, including the role of scintigrap
hy and radioiodine ablation. Copyright (C) 1998 by W.B. Saunders Compa
ny.