A case report of differentiated thyroid cancer presenting as a renal mass

Document Type : Case report


1 Karachi Institute of Radiotherapy & Nuclear Medicine, Karachi, Pakistan

2 Liaquat National Hospital, Stadium Road, Karachi, Pakistan

3 Sindh Institute of Urology & Transplant, Chand Bibi Road, Karachi, Pakistan

4 Gujranwala Institute of Nuclear Medicine & Radiotherapy, Nizampur, Gujranwala, Pakistan


The kidney is an unconventional site for thyroid metastasis. As of the writing of this article, only about 30 cases have been reported. It presents like a renal mass. We are reporting a man with thyroid carcinoma presenting with distant metastasis to the kidney. He had complaints of abdominal pain and haematuria. Initial imaging suggested a left renal mass. A diagnosis of renal cell carcinoma was made and a nephrectomy was performed. Histopathology revealed it to be a metastasis from cancer of the thyroid gland. Subsequently, an ultrasound of the thyroid gland was performed, which showed a malignant appearing thyroid nodule. Correlative bone scan showed uptake at multiple skeletal sites. Total thyroidectomy was done and it was found to be papillary thyroid cancer. Subsequently, high dose radioactive iodine was administered. The patient was followed up and has recently found to have metastasis to the brain and is undergoing radiotherapy.


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