<prompt> True about Pendred syndrome is:Diffuse colloid goitreMental retardationBilateral sensory neural deafnessAll of the above  <response>: Ans. D. All of the abovePendred syndrome, a disorder of the pendrin gene, is associated with decreased intracellular transport of iodine and deafness. Transient congenital hypothyroidism may occur following transplacental passage of TSH receptor blocking anti bodies iodine exposure and treatment with drugs like amiodarone. 