Thyroid Goiter 
Describes the causes of thyroid enlargement. Contains photos and illustrations. By EndocrineWeb.
http://www.endocrineweb.com/goiter.htmlGoiter 
Describes the background, pathophysiology, frequency, and clinical features of thyroid enlargement. By eMedicine.
http://www.emedicine.com/MED/topic916.htm
Pendred Syndrome 
A genetic condition associated with deafness and goiter.
http://ghr.nlm.nih.gov/condition=pendredsyndrome
Pendred Syndrome 
An inherited autosomal recessive condition which consists of deafness from the time of birth and enlargement of the thyroid gland. From MedicineNet.
http://www.medicinenet.com/pendred_syndrome/article.htm
Goiter 
Patient handout discusses the symptoms, causes, diagnosis, and treatment.
http://www.thyroid.org/patients/brochures/Goiter_brochure.pdf