Collision tumor of ovary: a case report on bilateral dermoid cyst with co-existing unilateral mucinous cystadenoma

Authors

  • Sowmya Sampurna Maddipati Department of Obstetrics and Gynecology, Kempegowda institute of Medical sciences, Bengaluru, Karnataka, India
  • Sudha C. P. Department of Obstetrics and Gynecology, Kempegowda institute of Medical sciences, Bengaluru, Karnataka, India
  • Sowmya K. Department of Obstetrics and Gynecology, Kempegowda institute of Medical sciences, Bengaluru, Karnataka, India

DOI:

https://doi.org/10.18203/2320-1770.ijrcog20202764

Keywords:

Benign cystic teratoma, Collision tumor, Frozen section, Mucinous cystadenoma

Abstract

A collision tumor is the coexistence of two adjacent, but histologically distinct tumors without histological admixture in the same tissue or organ. Such tumors have often been reported in various organs, but location in the ovary is rare. The juxtaposition with dermoid cysts has been reported as comprising approximately 5% of benign mucinous ovarian tumors and rare examples of proliferating mucinous tumors. Authors are reporting a case of collision tumor which included benign mucinous cystadenoma and benign cystic teratoma. The gynecologists and pathologists should be aware of such combination of tumors. The case was diagnosed post-operatively. It is important to correctly diagnose the component of tumor for further management and favourable prognosis. Frozen section intra-operatively plays an important role in diagnosing such tumors.

References

Mittal S, Gupta N, Sharma AK, Dadhwal V. Laparoscopic management of a large recurrent benign mucinous cystadenoma of the ovary. Arch Gynecol Obstet. 2008;277:379-80.

Vang R, Gown AM, Zhao C, Barry TS, Isacson C, Richardson MS, et al. Ovarian mucinous tumors associated with mature cystic teratomas: morphologic and immunohistochemical analysis identifies a subset of potential teratomatous origin that shares features of lower gastrointestinal tract mucinous tumors more commonly encountered as secondary tumors in the ovary. Am J Surg Pathol. 2007;31:854-69.

Okada S, Ohaki Y, Ogura J, Ishihara M, Kawamura T, Kumazaki T. Computed tomography and magnetic resonance imaging findings in cases of dermoid cyst coexisting with surface epithelial tumors in the same ovary. J Comput Assist Tomogr. 2004;28:169-73.

Bige O, Demir A, Koyuncuoglu M. Collision tumor: serous cystadenocarci-noma and dermoid cyst in the same ovary. Arch Gynecol Obstet. 2009;279:767-70.

Chandanwale S, Pal S, Kumar H, Sammi A. Serous cystadenoma and fibrothecoma: a rare combination in collision tumor of ovary with pseudo-meigs syndrome. J Pathol Translat Medic. 2015;49:163-6.

Marana R, Muzii L, Catalano GF, Caruana P, Oliva C, Marana E. Laparoscopic excision of adnexal masses. J Am Assoc Gynecol Laparosc. 2004;11:162-6.

Downloads

Published

2020-06-25

Issue

Section

Case Reports