Ovarian collision tumor

Last revised by Mohammad Taghi Niknejad on 7 Mar 2022

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, Niknejad M, Feger J, et al. Ovarian collision tumor. Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-14475

DOI:

https://doi.org/10.53347/rID-14475

Permalink:

https://radiopaedia.org/articles/14475

rID:

14475

Article created:

29 Jul 2011, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no recorded disclosures.

View Yuranga Weerakkody's current disclosures

Last revised:

7 Mar 2022, Mohammad Taghi Niknejad ◉

Disclosures:

At the time the article was last revised Mohammad Taghi Niknejad had no recorded disclosures.

View Mohammad Taghi Niknejad's current disclosures

Revisions:

11 times, by 8 contributors - see full revision history and disclosures

Systems:

Gynaecology, Oncology

Tags:

cases, case2

Synonyms:

Collision tumours of the ovary

Ovarian collision tumors are an uncommon ovarian neoplasm where there is co-existence of two adjacent but histologically distinct tumors in an ovary with no histologic admixture at the interface.

The exact pathogenesis is not well known. They are most commonly composed of ovarian teratoma (typically mature cystic teratoma of the ovary ⁵) and an ovarian cystadenoma or ovarian cystadenocarcinoma (typically mucinous ⁵) while other histologic combinations are much less common (e.g. teratoma and granulosa cell tumor, cystadenocarcinoma and sarcoma).

Radiographic features

When an ovarian tumor demonstrates imaging findings that cannot be subsumed under one histologic type, especially in cases of ovarian teratoma ^1,4, a collision tumor should be considered.