Indian Journal of Pathology and Microbiology

CASE REPORT
Year
: 2017  |  Volume : 60  |  Issue : 3  |  Page : 430--432

Metastasis within a metastasis to the thyroid: A rare phenomenon


Yin Ping Wong1, Khairunisa Ahmad Affandi1, Geok Chin Tan1, Rohaizak Muhammad2 
1 Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia
2 Department of Surgery, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia

Correspondence Address:
Yin Ping Wong
Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latiff, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur
Malaysia

Metastatic disease involving the thyroid gland is uncommon. Solitary thyroid metastases from various primary sites particularly kidney, lung, and breast had been previously described. To the best of our knowledge, metastases from two topographically separate primary malignancies to the thyroid have never been documented hitherto. This is the first reported case of cancer-to-cancer metastasis involving an invasive breast carcinoma metastasized within a metastatic renal cell carcinoma in the nonneoplastic thyroid in a 58-year-old woman. Distinguishing a secondary thyroid metastases from a primary thyroid malignancy is utmost crucial as treatment differs. The possibility of tumor metastases from two separated primaries should always be considered in a tumor exhibiting malignant cell populations with two distinctive histomorphological appearances. The role of immunohistochemistry stains in equivocal cases cannot be overemphasized.


How to cite this article:
Wong YP, Affandi KA, Tan GC, Muhammad R. Metastasis within a metastasis to the thyroid: A rare phenomenon.Indian J Pathol Microbiol 2017;60:430-432


How to cite this URL:
Wong YP, Affandi KA, Tan GC, Muhammad R. Metastasis within a metastasis to the thyroid: A rare phenomenon. Indian J Pathol Microbiol [serial online] 2017 [cited 2021 Sep 21 ];60:430-432
Available from: https://www.ijpmonline.org/article.asp?issn=0377-4929;year=2017;volume=60;issue=3;spage=430;epage=432;aulast=Wong;type=0