Thyroid disease in the west of Ireland: an atypical incidence of neoplasia.

This study was established to review the spectrum of thyroid disease presenting to a regional centre in the West of Ireland. Over a ten year period 414 thyroidectomies were performed. The most common histological diagnosis was nodular goitre (238 patients). There were 134 thyroid neoplasms; 87 (65%) adenomas, 40 (30%) carcinomas and 7 (5%) lymphomas. A breakdown of the cancers revealed 17 (36%) papillary and 14 (30%) follicular carcinomas with 7 (15%) lymphomas. Six (13%) patients presented with anaplastic tumors. Solitary nodules had a high cancer risk (25%) in comparison with multinodular or diffuse goitres (5%). Thyroiditis accounted for 38 cases while only 10 thyroidectomies were performed for Graves' disease.