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Histology of the Uterus

Histology of the Uterus

The uterine wall consists of three histological layers: the perimetrium, myometrium, and endometrium. The outermost perimetrium is a thin, serous membrane connected with the broad ligament on the sides, which helps anchor the uterus in the pelvic cavity. The thickest layer, myometrium, is mainly made up of smooth muscle tissue bundles. Its contractions are vital in facilitating the expulsion of the uterine lining, fetus, and placenta during menstruation and childbirth.
The endometrium is the...

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An Orthotopic Endometrial Cancer Model with Retroperitoneal Lymphadenopathy Made From In Vivo Propagated and Cultured VX2 Cells

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High-Grade Endometrial Carcinomas.

Esther Oliva¹, Robert A Soslow²

¹Pathology Department, Massachusetts General Hospital, 55 Fruit Street WRN 2, Boston, MA 02114-2696, USA.

Surgical Pathology Clinics

|February 4, 2016

Summary

This summary is machine-generated.

High-grade endometrial carcinomas are diverse aggressive tumors. Accurate diagnosis and tailored treatments are crucial due to overlapping features and differing prognoses.

Keywords:

Clear cell carcinoma FIGO grade 3 endometrioid carcinoma High grade endometrial carcinoma High-grade endometrioid carcinoma Malignant mixed müllerian tumor Serous carcinoma Undifferentiated carcinoma

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Area of Science:

Gynecologic Oncology
Pathology
Cancer Biology

Background:

High-grade endometrial carcinomas encompass several aggressive tumor types, including FIGO grade 3 endometrioid, serous, clear cell, undifferentiated carcinomas, and malignant mixed Müllerian tumors (MMMT).
These entities exhibit significant overlap in morphology and diagnostic criteria, complicating classification and treatment strategies.
Existing diagnostic and therapeutic approaches are insufficient to address the diversity within this group of aggressive cancers.

Purpose of the Study:

To highlight the heterogeneity of high-grade endometrial carcinomas.
To discuss the diagnostic challenges posed by overlapping features among these tumors.
To emphasize the need for improved diagnostic criteria and tailored therapeutic approaches.

Main Methods:

Morphologic examination of different high-grade endometrial carcinoma subtypes.
Review of epidemiologic, genetic, and prognostic differences.
Evaluation of the utility of immunohistochemical stains (p53, p16, ER, PR, mib-1, HNF1β, pan-cytokeratin) in classification.

Main Results:

Prototypic cases show distinct features, but substantial overlap exists between FIGO grade 3 endometrioid, serous, and clear cell carcinomas.
Immunohistochemistry can aid classification when used with morphologic assessment and specific markers.
Demographic, epidemiologic, spread patterns, and treatment modalities differ significantly despite morphologic similarities.

Conclusions:

High-grade endometrial carcinomas are a heterogeneous group requiring careful classification.
Current diagnostic criteria and treatment strategies need refinement to account for tumor diversity.
Integrated approaches combining morphology and targeted immunohistochemistry are essential for accurate diagnosis and management.