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Canadian Journal of Gastroenterology and Hepatology
Volume 2016, Article ID 7486473, 2 pages
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An Unusual “Collision Tumour” of the Prostate Gland and Rectum

Department of Abdominal Imaging, Vancouver General Hospital, Vancouver, BC, Canada V57 1M9

Received 10 November 2015; Accepted 31 December 2015

Copyright © 2016 C. F. Healy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Collision tumours of two different histopathological processes are rare. We describe a case of a patient with known low grade prostate adenocarcinoma developing a rectal GIST, which was diagnosed with combined imaging modalities of MR and ultrasound and confirmed by transrectal ultrasound guided biopsy.