Magnetic resonance imaging of the hypothalamic-pituitary region revealed a duplication of the pituitary stalk in a patient with a heterozygous deletion of chromosome 14 harboring the thyroid transcription factor-1 gene.
Unit of Internal Medicine and Endocrinology, Fondazione Salvatore Maugeri Instituto di Ricovero e Cura a Carattere Scientifico, University of Pavia, Via Maugeri 10, 27100 Pavia, Italy.