Korean J Otorhinolaryngol-Head Neck Surg.  2021 Sep;64(9):659-663. 10.3342/kjorl-hns.2020.00654.

A Case of Occult Anaplastic Thyroid Cancer Presenting as Huge Renal Mass

Affiliations
  • 1Department of Otorhinolaryngology-Head and Neck Surgery, Jeonbuk National University School of Medicine, Jeonju, Korea
  • 2Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea

Abstract

Anaplastic thyroid cancers (ATC) are a rapid growing and highly lethal form of thyroid cancer. Distant metastases of ATC are detected in about half of patients. Clinically, it is very rare to metastasize to the kidney. The most common initial symptoms of ATC are a palpable neck mass and accompanying compression symptoms of the upper aerodigestive tract. A 68-year-old patient was referred with a huge renal mass, which was detected during the evaluation of abdominal pain. Left total nephrectomy was performed. Histologically, the kidney tumor was a metastatic anaplastic thyroid carcinoma. To our knowledge, it is the first case of occult ATC presenting as a huge renal mass.

Keyword

Kidney neoplasms; Neoplasm metastasis; Thyroid cancer, anaplastic
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