ORIGINAL RESEARCH

Borderline ovarian tumors in pregnancy

About authors

1 Family Planning and Reproduction Center, Moscow, Russia

2 Pirogov Russian National Research Medical University, Moscow, Russia

Correspondence should be addressed: Pyotr A. Klimenko
Sevastopolsky prospect, 24а, Moscow, 117209; ur.liam@oknemilk.ap

About paper

Compliance with ethical standards: the study was approved by the Ethics Committee of Pirogov Russian National Research Medical University (protocol № 176 dates June 25, 2018). The informed consent was submitted by all study participants.

Author contribution: all authors contributed to the research and manuscript preparation equally, read the approved the final version of the article before publishing.

Received: 2020-04-07 Accepted: 2020-04-21 Published online: 2020-04-27
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Fig. 1. Ovarian tumors/tumor-like formations distribution in accordance with the histological structure, stage (BOTs/ malignant ovarian tumors) and abnormality degree (ovarian cancer)
Fig. 2. Morphology of BOTs and malignant ovarian tumors in pregnant women. А. Borderline serous ovarian cystadenoma (×10, hematoxylin and eosin staining). B. Poorly differentiated serous ovarian carcinoma (×10, hematoxylin and eosin staining). C. Borderline mucinous ovarian cystadenoma (×10, hematoxylin and eosin staining). D. Mucinous ovarian carcinoma (×10, hematoxylin and eosin staining).
Fig. 3. CD31 expression in the malignant ovarian tumor (×20). Vessels are marked with arrows
Fig. 4. CD31 expression in the borderline ovarian tumor (×20). Vessels are marked with arrows