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  • Title: Collision tumor of the mediastinum: a rare entity.
    Author: Kaidar-Person O, Naroditsky I, Guralnik L, Kremer R, Bar-Sela G.
    Journal: Ann Thorac Surg; 2013 Jan; 95(1):330-2. PubMed ID: 23272853.
    Abstract:
    A collision tumor is a rare entity consisting of 2 different tumors that, because of proximity, merge together. The diagnosis of a collision tumor requires that the 2 tumors be histologically distinct. This phenomenon has been described mostly at the esophagogastric junction, where a squamous cell carcinoma of esophageal origin collides with a gastric adenocarcinoma. The present case is of 2 histologically distinct tumors with aggressive features occurring at the mediastinum.
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