Virchows Archiv

, Volume 446, Issue 1, pp 10–14

Immunophenotype of lymphocytic infiltration in medullary carcinoma of the breast

  • Hajime Kuroda
  • Jun-ichi Tamaru
  • Goi Sakamoto
  • Kiyoshi Ohnisi
  • Shinji Itoyama
Original Article

DOI: 10.1007/s00428-004-1143-9

Cite this article as:
Kuroda, H., Tamaru, J., Sakamoto, G. et al. Virchows Arch (2005) 446: 10. doi:10.1007/s00428-004-1143-9

Abstract

Medullary carcinoma (MC) of the breast is characterized by large anaplastic cells and infiltration by benign lymphocytes. Patients with this pattern of breast carcinoma are considered to have a better prognosis than those with other histological subtypes. We reviewed cases of primary breast carcinoma that were surgically resected between 1990 and 2004. Of these, 13 cases of medullary carcinoma of the breast with lymphocyte infiltration were reported. Tests for CD3, CD4, CD8, CD20, CD56, TIA-1, and granzyme B were performed on paraffin sections. We found that the MC contained very few NK cells, as assessed by their reactivity with the CD56 antibodies. However, MC had a significantly greater percentage of CD3, CD8, TIA-1, and granzyme B lymphocytes infiltrating the stroma of the tumor. Furthermore, more CD8-positive than CD4-positive T-cell lymphocytes were present within the tumor cell nests in MC, as opposed to the proportion in usual ductal carcinoma. The infiltrating cytotoxic/suppressor T cells in MC represent host resistance against cancer, and the high grading of the T-cell infiltration could explain, in part, a key mechanism controlling the good prognosis for this type of tumor and solve the pathological paradox of MC.

Keywords

Medullary carcinomaCD8CD56TIA-1Granzyme B

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Hajime Kuroda
    • 1
  • Jun-ichi Tamaru
    • 1
  • Goi Sakamoto
    • 3
  • Kiyoshi Ohnisi
    • 2
  • Shinji Itoyama
    • 1
  1. 1.Department of PathologySaitama Medical Center, Saitama Medical School 1981Kawagoe, SaitamaJapan
  2. 2.Department of SurgerySaitama Medical CenterSaitamaJapan
  3. 3.Department of Breast PathologyCancer Institute and Hospital, Japanese Foundation for Cancer ResearchJapan