Pleomorphic lobular carcinoma in situ of the breast: Clinicopathological review of 47 cases

Thaer Khoury, Rouzan G. Karabakhtsian, David Mattson, Li Yan, Susanna Syriac, Fadi Habib, Song Liu, Mohamed M. Desouki

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Aims: Pleomorphic lobular carcinoma in situ (PLCIS) of the breast is a distinctive entity, but its behaviour and management are unclear. The purpose of this study was to review a relatively large number of cases and to evaluate the risk of recurrence. Methods and results: Cases of PLCIS (n = 47) from a 12-year period were reviewed. The clinical, radiological and pathological findings were recorded. Immunohistochemistry for oestrogen receptor (ER), progesterone receptor (PR) and HER2 was performed. Thirty-one patients had no concurrent breast cancer or past history of breast cancer, and six (19.4%) of these had local recurrence; all tumours (four invasive carcinoma and two PLCIS) were ipsilateral. Younger age at presentation was a risk factor for local recurrence: patients with recurrence had a mean age (range) of 52.5 years (44-59 years), versus 60.6 years (40-81 years) for those without (P = 0.03). Three of 31 patients were treated with radiation therapy (RT), and none of these developed local recurrence. PLCIS had an adverse ER/PR/HER2 molecular profile, with at least 41.2% of the cases overexpressing HER2. Moreover, at least 11.7% of the cases were triple-negative. Conclusions: This study included the largest number of patients who had no concurrent breast cancer or past history of breast cancer with the longest clinical follow-up, providing insights into management practices for PLCIS and the risk of recurrence.

Original languageEnglish (US)
Pages (from-to)981-993
Number of pages13
JournalHistopathology
Volume64
Issue number7
DOIs
StatePublished - Jun 2014

Keywords

  • Adjuvant therapy
  • Breast
  • Local recurrence
  • Pleomorphic lobular carcinoma in situ

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology

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    Khoury, T., Karabakhtsian, R. G., Mattson, D., Yan, L., Syriac, S., Habib, F., Liu, S., & Desouki, M. M. (2014). Pleomorphic lobular carcinoma in situ of the breast: Clinicopathological review of 47 cases. Histopathology, 64(7), 981-993. https://doi.org/10.1111/his.12353