[A Case of Thyroid-Like Follicular Carcinoma of the Kidney]

Hinyokika Kiyo. 2017 Apr;63(4):145-149. doi: 10.14989/ActaUrolJap_63_4_145.
[Article in Japanese]

Abstract

A 51-year-oldwoman with a right renal mass was referredto our hospital. Computedtomographic (CT) scan demonstrated a 30 mm-diameter renal mass with delayed enhancement. She underwent a robotassistedlaparoscopic right partial nephrectomy. The pathological examination showedthat tumor cells with eosinophilic, clear cytoplasm formedtubules of various sizes containing colloid-like material, which resembled the findings of thyroidfollicular carcinoma. The tumor was immunoreactive for vimentin andcytokeratin (CK) 7, whereas it lackedreactivity for thyroidtranscription factor-1 (TTF-1) or thyroglobulin. No tumors were detectedin the thyroidglandor other organs of the patient. Subsequently, the diagnosis of thyroidlike follicular carcinoma of the kidney (TLFCK) was determined. At 4 months postoperatively, the patient is alive with no evidence of disease recurrence. TLFCK is an extremely rare subtype of renal cancer, and only 26 cases have been reportedpreviously. We provide a brief literature review on this cancer.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Adenocarcinoma, Follicular* / diagnosis
  • Adenocarcinoma, Follicular* / surgery
  • Female
  • Humans
  • Kidney Neoplasms / diagnosis
  • Kidney Neoplasms / pathology*
  • Kidney Neoplasms / surgery
  • Middle Aged
  • Nephrectomy
  • Thyroid Neoplasms / pathology*
  • Tomography, X-Ray Computed