A Rare Collision Tumor Composed of Follicular Lymphoma and Adenocarcinoma in the Ampulla of Vater: A Case Report

<table>Cross-sections of the resected specimen. The tumor is composed of follicular lymphoma (enclosed by curved yellow line) and adenocarcinoma (enclosed by curved red line) of the ampulla of Vater (arrow). Adenocarcinoma includes the lower part of the common bile duct (arrowheads).</table>

Case Reports in Pathology

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Figure 4

Figure 4: A Rare Collision Tumor Composed of Follicular Lymphoma and Adenocarcinoma in the Ampulla of Vater: A Case Report 