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Review
. 2020 Jan;39(1):72-78.
doi: 10.1097/PGP.0000000000000565.

Wilms Tumor of the Ovary: Review of the Literature and Report of 2 Cases

Gulisa Turashvili  1 , Daniel J Fix, Robert A Soslow, Kay J Park
Affiliations
Review

Wilms Tumor of the Ovary: Review of the Literature and Report of 2 Cases

Gulisa Turashvili et al. Int J Gynecol Pathol. 2020 Jan.

Abstract

Primary extrarenal Wilms tumor of the gynecologic tract is extremely rare with scattered case reports occurring in the ovary, uterine corpus and cervix. Only 9 cases of primary ovarian Wilms tumor have been reported to date. Here, we provide an extensive literature review and describe 2 patients with ovarian Wilms tumor: a 36-yr-old female (patient 1) and a 16-yr-old female (patient 2), both presenting with abdominal pain and suspected ovarian torsion. They were each found to have unilateral ovarian masses measuring >15 cm in size which were removed by unilateral salpingo-oophorectomy. Microscopically, the tumors exhibited the typical triphasic histology of Wilms tumor. In addition, the tumor from patient 1 contained elements of mature cystic teratoma, while an extensive rhabdomyosarcomatous component was identified in patient 2. Both tumors were diffusely and strongly positive for WT1 with variable staining for other biomarkers. The cases were diagnostically challenging and referred to our center for an expert opinion. Teratoid Wilms tumor in patient 1 is the second reported case of ovarian Wilms tumor arising in association with teratoma. Recognition of primary ovarian Wilms tumor requires a high index of suspicion and exclusion of other entities based on tumor morphology and immunohistochemical studies.

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Conflict of interest statement

CONFLICT OF INTEREST

The authors have no conflicts of interest to declare.

Figures

Figure 1.
Figure 1.
Tumor from patient 1 comprised of mature teratomatous elements (A), blastemal and epithelial components (B) and spindle cell mesenchymal component (C). WT1 is positive in epithelial and blastemal cells (D). Hematoxylin-eosin stain (A-C), immunohistochemical stain (D); magnification x100 (A, B), x200 (C, D).
Figure 2.
Figure 2.
Tumor from patient 2 comprised of blastemal and epithelial components (A, B), mesenchymal component containing rhabdomyosarcoma and hyaline cartilage (C). WT1 is positive in epithelial and blastemal cells (D). Hematoxylin-eosin stain (A-C), immunohistochemical stain (D); magnification x100 (A, C), x200 (B, D).
See this image and copyright information in PMC

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