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African Journal of Urology
Published in: African Journal of Urology 1/2023

Open Access 01-12-2023 | Nephrectomy | Case Reports

Concomitant clear cell renal cell carcinoma with osseous metaplasia and papillary thyroid microcarcinoma: a case report with literature review

Authors: Saman S. Fakhralddin, Deedar K. Qader, Abdulwahid M. Salih, Ari M. Abdullah, Hiwa O. Baba, Soran H. Tahir, Aras J. Qaradakhy, Dilan S. Hiwa, Fahmi H. Kakamad

Published in: African Journal of Urology | Issue 1/2023

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Abstract

Backgrounds

Although calcifications have been observed in various renal masses, osseous metaplasia has very rarely been reported. Here, we present a case of concomitant clear cell renal cell carcinoma with osseous metaplasia and papillary thyroid microcarcinoma.

Case presentation

A 52-year-old male was being investigated for having post-prandial gaseous abdominal distention. Computed tomography of the abdomen showed a heterogeneous mass lesion measuring 27 × 24 mm at the upper/mid pole of the right kidney. It also revealed two small (10 and 11 mm) benign bone islands in the body of the D4 and L4 vertebrae. The patient underwent a metastatic workup by computed tomography, which revealed a 93 × 35 mm mass in the left thyroid lobe with coarse calcification. A partial nephrectomy was planned for the renal mass, but the site of the mass deemed this impossible. Six months after the operation, the patient underwent total thyroidectomy. Histopathology of both tissue samples revealed concomitant clear cell renal cell carcinoma with heterotopic bone formation and papillary thyroid microcarcinoma.

Conclusion

Although rare, osseous metaplasia in renal cell carcinoma can occur and may indicate an early-stage carcinoma with a favorable prognosis.
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Metadata
Title
Concomitant clear cell renal cell carcinoma with osseous metaplasia and papillary thyroid microcarcinoma: a case report with literature review
Authors
Saman S. Fakhralddin
Deedar K. Qader
Abdulwahid M. Salih
Ari M. Abdullah
Hiwa O. Baba
Soran H. Tahir
Aras J. Qaradakhy
Dilan S. Hiwa
Fahmi H. Kakamad
Publication date
01-12-2023
Publisher
Springer Berlin Heidelberg
Published in
African Journal of Urology / Issue 1/2023
Print ISSN: 1110-5704
Electronic ISSN: 1961-9987
DOI
https://doi.org/10.1186/s12301-023-00352-8

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