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01-08-2018 | Pictorial essay

Ovarian collision tumors: imaging findings, pathological characteristics, diagnosis, and differential diagnosis

Authors: Yang Peng, Jinhua Lin, Jian Guan, Lili Chen, Xiaoling Zhang, Shurong Li, Huanjun Wang, Mingjuan Liu, Yan Guo

Published in: Abdominal Radiology | Issue 8/2018

Abstract

Collision tumors are uncommon neoplasms in which elements of differing histologic origins coexist in a single mass. Ovarian collision tumors are a rare subtype of such lesions. The identification of collision tumors by radiologic examinations is essential to ensure that comprehensive biopsies are performed to guide appropriate treatments. According to the clinical and imaging findings of 12 patients and reviews of previous studies, ovarian collision tumors are mixtures of different combinations of epithelial tumors, germ cell tumors, and sex-cord-stromal tumors. The smaller tumors are usually located inside (“nested tumor”) or on the wall (“back to back”) of the larger tumors. Each type of ovarian collision tumors presents specific CT/MRI features in accordance with their histologic origins and collision patterns. Knowledge of the imaging features of ovarian collision tumors is crucial to aid preoperative diagnostic accuracy.

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Title: Ovarian collision tumors: imaging findings, pathological characteristics, diagnosis, and differential diagnosis
Authors: Yang Peng
Jinhua Lin
Jian Guan
Lili Chen
Xiaoling Zhang
Shurong Li
Huanjun Wang
Mingjuan Liu
Yan Guo
Publication date: 01-08-2018
Publisher: Springer US
Published in: Abdominal Radiology / Issue 8/2018
Print ISSN: 2366-004X
Electronic ISSN: 2366-0058
DOI: https://doi.org/10.1007/s00261-017-1419-6

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