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Metastatic papillary carcinoma of thyroid masquerading as a renal tumour
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Differentiated papillary carcinomas constitute 80–90% of thyroid malignancies and are known for regional nodal metastasis.1 Only 2% of patients present with haematogenous metastases involving lungs, brain and bone.2
A man in his 50s presented elsewhere with flank pain and haematuria. Computed tomography scan revealed a 5 cm cystic, necrotic mass in the upper pole of the right kidney. Following a right radical nephrectomy for a primary renal malignancy the patient was referred to our institute.
Gross examination of a kidney measuring 8.5×5×5 cm revealed a 5×5×4 cm mass, with gelatinous brown areas, adherent to the renal capsule in the …
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Competing interests: None.