The diverse morphology and immunophenotype of ovarian endometrioid carcinomas. 2023

Karen L Talia, and W Glenn McCluggage
Royal Children's Hospital, Royal Women's Hospital and Australian Centre for the Prevention of Cervical Cancer, Melbourne, Vic, Australia. Electronic address: Karen.Talia2@rch.org.au.

Endometrioid carcinoma (EC) accounts for approximately 10-12% of ovarian epithelial malignancies but compared to its relative frequency, results in a disproportionate number of diagnostically difficult cases with potential for misdiagnosis. In this review the protean and diverse morphologies of ovarian EC are discussed, including 'metaplastic' changes, EC with spindle cell differentiation/corded and hyalinised features and EC with sex cord-like formations. The propensity for 'transdifferentiation' in ovarian ECs is also discussed, one example being the association with a somatically derived yolk sac tumour. Although immunohistochemistry may be extremely useful in diagnosing EC and in distinguishing between EC and other ovarian epithelial malignancies, metastatic neoplasms and sex cord-stromal tumours, this review also discusses the propensity for ovarian EC to exhibit an aberrant immunophenotype which may compound diagnostic uncertainty. The genomic characteristics of these tumours and the recent 'incorporation' of seromucinous carcinoma into the EC category are also discussed.

UI MeSH Term Description Entries
D010051 Ovarian Neoplasms Tumors or cancer of the OVARY. These neoplasms can be benign or malignant. They are classified according to the tissue of origin, such as the surface EPITHELIUM, the stromal endocrine cells, and the totipotent GERM CELLS. Cancer of Ovary,Ovarian Cancer,Cancer of the Ovary,Neoplasms, Ovarian,Ovary Cancer,Ovary Neoplasms,Cancer, Ovarian,Cancer, Ovary,Cancers, Ovarian,Cancers, Ovary,Neoplasm, Ovarian,Neoplasm, Ovary,Neoplasms, Ovary,Ovarian Cancers,Ovarian Neoplasm,Ovary Cancers,Ovary Neoplasm
D003937 Diagnosis, Differential Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures. Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000077216 Carcinoma, Ovarian Epithelial A malignant neoplasm that originates in cells on the surface EPITHELIUM of the ovary and is the most common form of ovarian cancer. There are five histologic subtypes: papillary serous, endometrioid, mucinous, clear cell, and transitional cell. Mutations in BRCA1, OPCML, PRKN, PIK3CA, AKT1, CTNNB1, RRAS2, and CDH1 genes are associated with this cancer. Epithelial Ovarian Cancer,Epithelial Ovarian Carcinoma,Ovarian Cancer, Epithelial,Ovarian Epithelial Cancer,Ovarian Epithelial Carcinoma,Cancer, Epithelial Ovarian,Cancer, Ovarian Epithelial,Carcinoma, Epithelial Ovarian,Epithelial Cancer, Ovarian,Epithelial Carcinoma, Ovarian,Epithelial Ovarian Cancers,Epithelial Ovarian Carcinomas,Ovarian Carcinoma, Epithelial,Ovarian Epithelial Cancers,Ovarian Epithelial Carcinomas
D014408 Biomarkers, Tumor Molecular products metabolized and secreted by neoplastic tissue and characterized biochemically in cells or BODY FLUIDS. They are indicators of tumor stage and grade as well as useful for monitoring responses to treatment and predicting recurrence. Many chemical groups are represented including HORMONES; ANTIGENS; amino and NUCLEIC ACIDS; ENZYMES; POLYAMINES; and specific CELL MEMBRANE PROTEINS and LIPIDS. Biochemical Tumor Marker,Cancer Biomarker,Carcinogen Markers,Markers, Tumor,Metabolite Markers, Neoplasm,Tumor Biomarker,Tumor Marker,Tumor Markers, Biochemical,Tumor Markers, Biological,Biochemical Tumor Markers,Biological Tumor Marker,Biological Tumor Markers,Biomarkers, Cancer,Marker, Biochemical Tumor,Marker, Biologic Tumor,Marker, Biological Tumor,Marker, Neoplasm Metabolite,Marker, Tumor Metabolite,Markers, Biochemical Tumor,Markers, Biological Tumor,Markers, Neoplasm Metabolite,Markers, Tumor Metabolite,Metabolite Markers, Tumor,Neoplasm Metabolite Markers,Tumor Markers, Biologic,Tumor Metabolite Marker,Biologic Tumor Marker,Biologic Tumor Markers,Biomarker, Cancer,Biomarker, Tumor,Cancer Biomarkers,Marker, Tumor,Markers, Biologic Tumor,Markers, Carcinogen,Metabolite Marker, Neoplasm,Metabolite Marker, Tumor,Neoplasm Metabolite Marker,Tumor Biomarkers,Tumor Marker, Biochemical,Tumor Marker, Biologic,Tumor Marker, Biological,Tumor Markers,Tumor Metabolite Markers
D018269 Carcinoma, Endometrioid An adenocarcinoma characterized by the presence of cells resembling the glandular cells of the ENDOMETRIUM. It is a common histological type of ovarian CARCINOMA and ENDOMETRIAL CARCINOMA. There is a high frequency of co-occurrence of this form of adenocarcinoma in both tissues. Adenocarcinoma, Endometrioid,Endometrioid Adenocarcinoma,Adenocarcinomas, Endometrioid,Carcinomas, Endometrioid,Endometrioid Adenocarcinomas,Endometrioid Carcinoma,Endometrioid Carcinomas
D018312 Sex Cord-Gonadal Stromal Tumors Neoplasms derived from the primitive sex cord or gonadal stromal cells of the embryonic GONADS. They are classified by their presumed histogenesis and differentiation. From the sex cord, there are SERTOLI CELL TUMOR and GRANULOSA CELL TUMOR; from the gonadal stroma, LEYDIG CELL TUMOR and THECOMA. These tumors may be identified in either the OVARY or the TESTIS. Gynandroblastoma,Sex Cord-Stromal Tumor,Gynandroblastomas,Sex Cord Stromal Tumor,Sex Cord-Stromal Tumors,Tumor, Sex Cord-Stromal,Tumors, Sex Cord-Stromal

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