Mucinous Cystadenocarcinoma of the Breast: Report of 2 Cases Including One With Long-Term Local Recurrence

Author:

Nayak Anupma12ORCID,Bleiweiss Ira J.12,Dumoff Kimberly12,Bhuiya Tawfiqul A.3

Affiliation:

1. University of Pennsylvania, Philadelphia, PA, USA

2. Hospital of the University of Pennsylvania, Philadelphia, PA, USA

3. Northwell Health, Lake Success, NY, USA

Abstract

Primary mucinous cystadenocarcinoma (MCA) of breast is an exceedingly rare tumor with histologic resemblance to MCA arising in ovary, pancreas, and gastrointestinal tract. In this article, we present 2 additional cases of MCA of breast, one highlighting the diagnostic challenges of a rare entity that may potentially lead to unnecessary chemotherapy and the second case presenting with recurrence after 8 years of primary surgical excision defying the indolent behavior reported in the literature. To our knowledge, this is the first reported instance of such behavior.

Publisher

SAGE Publications

Subject

Pathology and Forensic Medicine,Surgery,Anatomy

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