Thymic hyperplasia associated with primary Sjogren's syndrome cured by thymectomy.

Thymus hyperplasia associated with Sjogren's syndrome is a rare morbid state. The present study described a 55-year-old woman who presented with a dryness of the oral cavity, and itchy eyes. Chest computed tomography identified a mass, measuring 4×2.5×2.5 cm, located at the anterior mediastinum. The mass was suspected as thymoma, thymic cyst, or teratoma, and resected by thymectomy. The postoperative pathological diagnosis was thymic lymphoid hyperplasia. After 1-year follow-up period, her sicca syndrome has been resolved. The present study records a successful case for thymectomy to treat the patients with thymic hyperplasia associated with primary Sjogren's syndrome (pSS).