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Korean J Pathol. 2012 Jun;46(3):282-6. doi: 10.4132/KoreanJPathol.2012.46.3.282. Epub 2012 Jun 22.

Papillary carcinoma of thyroid metastatic to adenocarcinoma in situ of lung: report of an unusual case.

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1
Department of Pathology, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Korea.

Abstract

The tumor-to-tumor metastasis is a rare event. The lung tumors are the most common donor tumors in tumor-to-tumor metastasis, but are exceedingly rare as a recipient. Here, we report a case of papillary thyroid carcinoma (PTC) metastasizing to adenocarcinoma in situ (AIS, formerly bronchioloalveolar carcinoma) of the lung in a 44-year-old woman who underwent total thyroidectomy for PTC 8 years ago. To the best of our knowledge, the present case is the first case reporting on PTC metastasized to AIS. A review of the relevant literature is presented.

KEYWORDS:

Adenocarcinoma in situ; Neoplasm metastasis; Thyroid cancer, papillary; Tumor-to-tumor

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