| ORIGINAL ARTICLE |
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| Year : 2007 | Volume
: 24
| Issue : 3 | Page : 119-124 |
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Hashimoto's thyroiditis - A Malaysian perspective
G Jayaram, KR Iyengar, P Sthaneshwar, JN Hayati
Department of Pathology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
Correspondence Address:
K R Iyengar
Department of Pathology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur
Malaysia
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-9371.41898
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This study was undertaken to analyze the fine needle aspiration (FNA) cytologic, functional and immunologic features in Hashimoto's thyroiditis (HT) with special reference to ethnicity in Malaysian patients. 88 cases of HT retrieved from the archives of the cytology laboratory were reviewed. Ethnic, clinical, cytologic, biochemical, and immunologic features were correlated. HT was more common in Indian patients (57%). 33% of HT cases presented with nodular thyroid enlargement (47.5% were Chinese). 57.5% were euthyroid and 35% hypothyroid. Thyroglobulin antibody (TG Ab) and thyroid peroxidase antibody (TPO Ab) (tested in 29/88 cases) were elevated in 83% and 93% cases respectively. Review of cytologic smears showed Hurthle cells in 56% cases, high lymphoid to epithelial ratio in 38%, lymphoid follicles in 67%, follicular cell infiltration by lymphoid cells in 69% and lymphohistiocytic clusters in 40%. Giant cells and/or granulomas were present in 45% and plasma cells and/or immunoblasts in 40% of cases. 17% showed neutrophils and/or eosinophils infiltrating follicular epithelial cells. Follow up FNA of eight cases showed appearance of a diagnostic cytologic pattern in all and changes in clinical presentation in four. Hashimoto's thyroiditis was more common among Indian women with nodular presentation seen more often in Chinese. Hurthle cell change, lymphoid follicles and follicular cell infiltration by lymphoid cells, considered histologic hallmarks of HT, were seen less frequently. 17% cases showed infiltration of follicular cells by neutrophils and eosinophils, a hitherto undescribed feature in HT. Follow up cytology was helpful in monitoring progression of disease and arriving at a definitive diagnosis. |
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