T C Chang1, C C Tung, Y L Hsiao, M H Chen. 1. Department of Internal Medicine, National Taiwan University Hospital, Taipei, Republic of China.
Abstract
OBJECTIVE: To determine whether immunoperoxidase staining could be used for differential diagnosis of parathyroid from thyroid origin in fine needle aspirates of suspected parathyroid lesions. STUDY DESIGN: Immunoperoxidase staining of parathyroid hormone and thyroglobulin was performed on aspirated smears from 10 patients with parathyroid lesions (6 of 10 patients also associated with thyroid lesions) and 10 patients with thyroid lesions. All of them had surgical tissue proof of the diagnosis. RESULTS: Aspirated smears of six patients with parathyroid lesions had strong to moderate staining for parathyroid hormone and negative staining for thyroglobulin. Another four patients with parathyroid lesions had equivocal staining for parathyroid hormone and negative staining for thyroglobulin. All aspirated smears from the 16 thyroid lesions had negative staining for parathyroid hormone and positive staining for thyroglobulin. CONCLUSION: Immunoperoxidase staining of parathyroid hormone and thyroglobulin, done for each suspected parathyroid lesion, was helpful in the differential diagnosis of parathyroid vs. thyroid origin.
OBJECTIVE: To determine whether immunoperoxidase staining could be used for differential diagnosis of parathyroid from thyroid origin in fine needle aspirates of suspected parathyroid lesions. STUDY DESIGN: Immunoperoxidase staining of parathyroid hormone and thyroglobulin was performed on aspirated smears from 10 patients with parathyroid lesions (6 of 10 patients also associated with thyroid lesions) and 10 patients with thyroid lesions. All of them had surgical tissue proof of the diagnosis. RESULTS: Aspirated smears of six patients with parathyroid lesions had strong to moderate staining for parathyroid hormone and negative staining for thyroglobulin. Another four patients with parathyroid lesions had equivocal staining for parathyroid hormone and negative staining for thyroglobulin. All aspirated smears from the 16 thyroid lesions had negative staining for parathyroid hormone and positive staining for thyroglobulin. CONCLUSION: Immunoperoxidase staining of parathyroid hormone and thyroglobulin, done for each suspected parathyroid lesion, was helpful in the differential diagnosis of parathyroid vs. thyroid origin.