Abstract
Papillary thyroid carcinoma and primary lung cancer have vastly different treatment approaches and prognosis. If lung mass is found in patients with papillary thyroid carcinoma, we have to be aware of the possibility of primary lung cancer especially when the lesion is not iodine-avid, or is not typical to metastatic thyroid carcinoma, or serum thyroglobulin is not elevated. Here we present two cases of non-small cell lung cancer masquerading as metastatic papillary thyroid carcinoma and think of the approach of the lung mass which is found in patients with papillary thyroid carcinoma.
References
1. The Korea Central Cancer Registry. National Cancer Center. Annual report of cancer statistics in Korea in 2008. 2010. Seoul, Korea: Ministry of Health and Welfare.
2. Lee YJ, Han JY. Current trends in early diagnosis and treatment of lung cancer. Korean J Med. 2011. 80(5):529–531.
3. Sipos JA, Mazzaferri EL. Thyroid cancer epidemiology and prognostic variables. Clin Oncol (R Coll Radiol). 2010. 22(6):395–404.
4. Sampson E, Brierley JD, Le LW, Rotstein L, Tsang RW. Clinical management and outcome of papillary and follicular (differentiated) thyroid cancer presenting with distant metastasis at diagnosis. Cancer. 2007. 110(7):1451–1456.
5. Lee J, Soh EY. Differentiated thyroid carcinoma presenting with distant metastasis at initial diagnosis clinical outcomes and prognostic factors. Ann Surg. 2010. 251(1):114–119.
6. Yi KH, Park YJ, Koong SS, Kim JH, Na DG, Ryu JS, et al. Revised Korean Thyroid Association management guidelines for patients with thyroid nodules and thyroid cancer. Endocrinol Metab. 2010. 25(4):270–297.