Fine Needle Aspiration Cytology of Invasive Micropapillary Carcinoma of the Breast - Report of four Cases -

유방의 침윤성 미세유두모양 암종의 세침흡인 세포학적 소견 - 4예 보고 -

  • Kwon, Sun-Young (Department of Pathology, Keimyung University School of Medicine) ;
  • Jung, Hae-Ra (Department of Pathology, Keimyung University School of Medicine) ;
  • Kaug, Yu-Na (Department of Pathology, Keimyung University School of Medicine) ;
  • Kim, Sang-Pyo (Department of Pathology, Keimyung University School of Medicine) ;
  • Kwon, Kun-Young (Department of Pathology, Keimyung University School of Medicine) ;
  • Lee, Sang-Sook (Department of Pathology, Keimyung University School of Medicine)
  • 권선영 (계명대학교 의과대학 병리학교실) ;
  • 정혜라 (계명대학교 의과대학 병리학교실) ;
  • 강유나 (계명대학교 의과대학 병리학교실) ;
  • 김상표 (계명대학교 의과대학 병리학교실) ;
  • 권건영 (계명대학교 의과대학 병리학교실) ;
  • 이상숙 (계명대학교 의과대학 병리학교실)
  • Published : 2004.11.30

Abstract

Invasive micropapillary carcinoma (IMPCa) is a rare variant of invasive ductal carcinoma of the breast. This variant is associated with a set of peculiar cytological findings and aggressive biological behaviors. In most reported cases, IMPCa has involved massive axillary lymph node metastases at the time of diagnosis. We experienced four cases of cytological features of IMPCa, all of which were verified by histological examination. Fine needle aspiration cytology (FNAC) revealed malignant epithelial cells, which formed small, oval to angulated papillary clusters, which lacked central fibrovascular cores. The histological findings of the four cases revealed both pure and mixed forms of IMPCa, composed of cohesive malignant epithelial cells, surrounded by distinctive clear spaces and separated by thin fibrous septa. All patients evidenced axillary lymph node metastases at the time of diagnosis. It is important to identify the peculiar cytological findings which would differentiate IMPCa from other diseases.

Keywords

References

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