Tiny but Mighty: Collision Tumor of a Superficial Adenocarcinoma Arising From a Tubulovillous Adenoma with Associated Low-Grade Follicular Lymphoma

Author:

Lin Yee Sing12ORCID,Hamilton Auerilius E. R.34,Henderson Christopher12,Farzin Mahtab1

Affiliation:

1. Liverpool Hospital, Liverpool, Australia

2. Western Sydney University, Campbelltown, Australia

3. Campbelltown Hospital, Campbelltown, Australia

4. University of New South Wales, South Western Sydney Clinical School, Liverpool, Australia

Abstract

Collision tumors are rare and there have only been a few previously described cases between an intestinal adenoma and a lymphoma. We report the first case of a 74-year-old woman who on investigation for iron deficiency had a tubulovillous adenoma with underlying follicular lymphoma. The atypical lymphoid proliferation showed immunohistochemical positivity for cluster of differentiation 20 (CD20), B-cell lymphoma 2 (BCL2), and B-cell lymphoma 6 (BCL6). Subsequent right hemicolectomy showed a superficially invasive adenocarcinoma.

Publisher

SAGE Publications

Subject

Pathology and Forensic Medicine,Surgery,Anatomy

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