Abstract
Introduction
Collision tumor means the coexistence of two adjacent, but histologically distinct tumors without histologic admixture in the same tissue or organ. Collision tumors involving ovaries are extremely rare.
Case
We present a case of 45-year-old parous woman with a left dermoid cyst, with unusual imaging findings, massive ascites and peritoneal carcinomatosis. The patient underwent cytoreductive surgery. The histopathology revealed a collision tumor consisting of an invasive serous cystadenocarcinoma and a dermoid cyst.
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Acknowledgments
The authors thank Dr. Kenneth Robert Lee (Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA) for the review of the slides and confirmation of the diagnosis.
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Bige, O., Demir, A., Koyuncuoglu, M. et al. Collision tumor: serous cystadenocarcinoma and dermoid cyst in the same ovary. Arch Gynecol Obstet 279, 767–770 (2009). https://doi.org/10.1007/s00404-008-0781-6
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DOI: https://doi.org/10.1007/s00404-008-0781-6