Question: Do patients with Pendred syndrome present congenital deafness?

Context:
Pendred Syndrome can be characterized by the triad composed of familial goitre, abnormal perchlorate discharge and congenital deafness.
Pendred syndrome is an autosomal recessive disorder characterized by congenital deafness and goiter. 
Pendred syndrome comprises congenital sensorineural hearing loss, thyroid goiter, and positive perchlorate discharge test. 
The cause of the congenital deafness in Pendred syndrome is obscure, although a Mondini type malformation of the cochlea exists in some patients.
Pendred syndrome is an autosomal recessive disorder characterized by congenital deafness and goiter.
Pendred syndrome is the autosomal recessively transmitted association of familial goiter and congenital deafness.
Pendred syndrome (PDS) is an autosomal recessive disorder characterized by congenital deafness, goiter and iodide organification defect.
Pendred syndrome is a recessively inherited disorder with the hallmark features of congenital deafness and thyroid goitre.
Pendred syndrome, a common autosomal-recessive disorder characterized by congenital deafness and goiter, is caused by mutations of SLC26A4, which codes for pendrin.
These studies provide compelling evidence that defects in pendrin cause Pendred syndrome thereby launching a new area of investigation into thyroid physiology, the pathogenesis of congenital deafness and the role of altered sulphate transport in human disease.
Mutations in the Pendred syndrome gene have been observed in patients with deafness and vestibular aqueduct dilatation, in the absence of other Pendred syndrome features.
The occurrence of congenital deafness, mutism and goitre unassociated with cretinism or mental retardation in euthyroid patients is known as Pendred's Syndrome.
The autosomal recessive Pendred's syndrome is defined by congenital sensorineural deafness, goiter, and impaired iodide organification.
Pendred's syndrome is an autosomal recessive disease characterized by goiter, impaired iodide organification, and congenital sensorineural deafness.
Pendred syndrome is an autosomal recessive disorder characterized by congenital sensorineural deafness, goiter, and impaired iodide organification.
Pendred's syndrome is manifested by congenital sensorineural deafness in association with familial goiter due to defective organic binding of iodine in the thyroid gland.
Although the textbook view of the Pendred syndrome is that of an autosomal recessive condition characterised by deafness and goitre, it is increasingly clear that not all patients present this classical clinical description.
Pendred's syndrome may account for up to 10% of the cases with hereditary hearing loss, and pendrin mutations have also been found in a kindred with non-syndromic deafness.
Pendred syndrome comprises the association of severe congenital sensorineural deafness with thyroid pathology.
The first one is named Pendred Syndrome (PS) when deafness is associated with thyroid goiter; the second is called DFNB4, when no other symptoms are present.
Pendred syndrome is an autosomal recessive disorder characterized by sensorineural deafness, a partial defect in iodide organification, and dyshormonogenetic goiter.
Pendred syndrome and non-syndromic recessive deafness associated with enlarged vestibular aqueduct (NSRD with EVA) are caused by mutations in the SLC26A4 (PDS) gene.
Although the textbook view of Pendred syndrome is that of an autosomal recessive condition characterized by deafness and goitre, it is increasingly clear that not all such patients present this classical clinical picture. 
The occurrence of congenital deafness, mutism and goitre unassociated with cretinism or mental retardation in euthyroid patients is known as Pendred's Syndrome. 
The cause of the congenital deafness in Pendred syndrome is obscure, although a Mondini type malformation of the cochlea exists in some patients. 
The discovery of mutations in the SLC26A4 gene in patients with Pendred syndrome (congenital deafness, goiter, and defective iodide organification) suggested a possible role for the encoded protein, pendrin, as an apical iodide transporter. 
Pendred syndrome is a recessively inherited disorder with the hallmark features of congenital deafness and thyroid goitre. 
Pendred&apos;s syndrome is manifested by congenital sensorineural deafness in association with familial goiter due to defective organic binding of iodine in the thyroid gland. The majority of patients with Pendred&apos;s syndrome are euthyroid. We report on an unusual case of a patient with Pendred&apos;s syndrome presenting with amenorrhea and late-onset hypothyroidism.
 Although the textbook view of Pendred syndrome is that of an autosomal recessive condition characterized by deafness and goitre, it is increasingly clear that not all such patients present this classical clinical picture. Malformations of the inner ear, specifically enlargement of the vestibular aqueduct, are common in Pendred syndrome and mutations in the PDS (Pendred Syndrome) gene have been recorded in patients presenting with deafness and vestibular aqueduct dilatation only, without other features of Pendred syndrome.
The occurrence of congenital deafness, mutism and goitre unassociated with cretinism or mental retardation in euthyroid patients is known as Pendred&apos;s Syndrome. It has been estimated that 4-10 % of children with congenital deafness suffer from this condition.
Malformations of the inner ear, specifically enlargement of the vestibular aqueduct, are common in Pendred syndrome and mutations in the PDS (Pendred Syndrome) gene have been recorded in patients presenting with deafness and vestibular aqueduct dilatation only, without other features of Pendred syndrome. Since this is the most common radiological malformation of the cochlea in deaf patients, we investigated what proportion of such cases were due to mutation of the PDS gene.
Although the textbook view of Pendred syndrome is that of an autosomal recessive condition characterized by deafness and goitre, it is increasingly clear that not all such patients present this classical clinical picture. Malformations of the inner ear, specifically enlargement of the vestibular aqueduct, are common in Pendred syndrome and mutations in the PDS (Pendred Syndrome) gene have been recorded in patients presenting with deafness and vestibular aqueduct dilatation only, without other features of Pendred syndrome.

Answer: Congenital deafness is one of the characteristics of Pendred syndrome patients.
Exact answer: yes