A1 Refereed original research article in a scientific journal
Tumor-to-tumor metastasis to Warthin tumor presenting as an initial sign of breast carcinoma: A case report
Authors: Mansikka Iisa, Kinnunen Ilpo, Hirvonen Jussi, Vainio Paula, Velhonoja Jarno
Publisher: WILEY
Publication year: 2023
Journal: Clinical Case Reports
Journal name in source: CLINICAL CASE REPORTS
Journal acronym: CLIN CASE REP
Article number: e06817
Volume: 11
Number of pages: 4
ISSN: 2050-0904
eISSN: 2050-0904
DOI: https://doi.org/10.1002/ccr3.6817
Web address : https://onlinelibrary.wiley.com/doi/10.1002/ccr3.6817
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/178659304
Metastases of distant primary tumors on the parotid gland are very rare. Tumor-to-tumor metastasis to salivary gland tumors is extremely rare. A case of a 69-year-old woman with a large left parotid gland mass with no previous salivary gland problems or cancer. Fine-needle aspiration (FNA) showed evidence of a Warthin tumor. A total left parotidectomy was performed. The final pathology report showed a Warthin tumor containing two metastases of adenocarcinoma. The immunohistochemistry of the metastases led to the diagnosis of primary breast cancer. A negative FNA does not rule out the possibility of a malignant parotid tumor or metastasis, and a parotid lump should be presumed to be a secondary tumor until proven otherwise if the patient has a history of any distant primary cancer. Our patient case serves as a reminder that a new distant primary cancer might be the cause of a parotid lump.
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