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Summary
Thyroid malignancies are one of the fastest growing cancers in the world, with the majority being papillary thyroid cancer. Follicular variant of papillary thyroid cancer accounts for about 10%–20% of papillary thyroid carcinomas. The usual sites for metastases of these tumours are lungs and bones with renal metastases being extremely rare. We describe a case of a 64-year-old woman who presented with abdominal pain. On subsequent imaging, she was found to have a colonic mass with metastatic lesions in the lungs and tumour involving left kidney. On biopsy and immunohistochemical staining, the renal mass showed positivity for thyroid cancer markers. Thyroid scan was noted to be negative and the patient was placed on active surveillance after undergoing chemotherapy for colonic adenocarcinoma.
- oncology
- colon cancer
- endocrine cancer
- urological cancer
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Footnotes
Contributors AKS wrote the manuscript with support from MM, ARM and AL; collected the patient information and diagrams and did all the groundwork for this submission. MM contributed to all the sections, especially the discussion part and helped collect patient information. ARM organised the manuscript and also contributed to literature search and discussion part of the manuscript. AL provided the images and detailed description of the pathology section along with revision of the pathology section. DP reviewed and suggested major changes to the initial manuscript and guided the entire process.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.