Small renal cell carcinoma: MRI with pathologic correlation

Hiroshi Shinmoto, Yuji Yuasa, Akihiro Tanimoto, Yoshiaki Narimatsu, Masahiro Jinzaki, Kyoichi Hiramatsu, Makio Mukai

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The MRI features of small renal cell carcinomas (RCCs) were retrospectively reviewed and correlated with histology in 24 patients. MRI features on both T1- and T2-weighted images were classified into hypointensity, isointensity, and hyperintensity. Each tumor was pathologically classified into four types: alveolar, papillary, tubular, and cystic. These findings were correlated with MR signal intensities. Alveolar tumors showed hypointensity to isointensity on T1-weighted image and isointensity to hyperintensity on T2-weighted image. In contrast, all papillary tumors showed hypointensity on T2-weighted image. Four of six tumors with hypointensity on T2-weighted image were caused by hemosiderin deposition, hemorrhage, and necrosis. However, there were two papillary RCCs that showed hypointensity on T2-weighted image despite no hemosiderin deposition and no hemorrhage. We conclude that papillary RCC is associated with T2-hypointense appearance as well as hemosiderin deposition, hemorrhage, and necrosis.

Original languageEnglish
Pages (from-to)690-694
Number of pages5
JournalJournal of Magnetic Resonance Imaging
Volume8
Issue number3
DOIs
Publication statusPublished - 1998 May 1

Keywords

  • Hemosiderin
  • MRI
  • Papillary renal cell carcinoma
  • Renal neoplasm

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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