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The Korean Journal of Cytopathology 2000;11(2): 109-114.
Fine Needle Aspiration Cytology of Amyloid Goiter: A Case Report .
Seoung Wan Chae, Jin Hee Sohn, Eun Sook Nam, Duck Hwan Kim, Hyung Sik Shin
Department of Pathology, Hallym University College of Medicine, Chunchon, Korea. jhsohn@www.hallym.or.kr
ABSTRACT
Amyloid goiter is a rare disease entity that is defined as a symptomatic mass or clinically detectable thyroid enlargement because of amyloid deposition. We present a case of amyloid goiter diagnosed in the fine needle aspiration cytology(FNAC) in a 73-year-old Korean woman presented with nephrotic syndrome and thyroid enlargement. The thyroid function was in normal range. Thyroid scan showed a nodule, 4x2 cm in the right lobe with underlying diffuse goiter. Aspirates revealed benign looking follicular cells and scattered eosinophilic material. The sections of the cell block showed nodular deposit of eosinophilic hyalinized material in the interfollicular area. It showed apple-green birefringence under polarization with Congo red stain. The renal biopsy also exhibited deposition of eosinophilic materials in the glomeruli and interstitial vascular wall, which were confirmed as amyloidosis. This material was morphologically distinct from the colloid.
Key Words: Amyloid goiter; Fine needle aspiration cytology; Thyroid