08 July 2026
: Case report 
Misdiagnosis of Endometrioid Borderline Ovarian Tumors by Intraoperative Frozen Section Pathology: A Case Report and Review of the Literature
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Unexpected drug reaction, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)
Huifen Wang AB 1, Hongqin Du A 1*DOI: 10.12659/AJCR.952134
Am J Case Rep 2026; 27:e952134
Figure 1 Microscopic view of the ovarian tumor (hematoxylin and eosin stain)(A) Ovarian biopsy, ×40: complex architecture with crowded, fused, and cribriform glands, characteristic of a borderline tumor without destructive stromal invasion. (B) Ovarian biopsy, ×100: stratified endometrioid epithelium with mild to moderate nuclear atypia and increased mitotic activity, but overall epithelial polarity preserved.