Related Experiment Video
Updated: Jun 14, 2026

03:01
Improved Hysteroscopic Resection of Endometrial Polyps Using 6-Fr Micro-Scissors and Forceps
Published on: August 2, 2024
[Endometrial hyperplastic changes and precancerous conditions: terminology and classification]
Arkhiv Patologii
|April 8, 2010
Summary
This study highlights challenges in diagnosing endometrial hyperplasia, a precancerous condition. Researchers advocate for a simplified WHO classification to improve diagnostic accuracy and consistency for endometrial lesions.
Area of Science:
- Gynecologic Pathology
- Oncology
- Histopathology
Context:
- Endometrial hyperplastic lesions and precancerous conditions of the corpus uteri are associated with debated terminology and classification.
- Current World Health Organization (WHO) criteria for diagnosing endometrial changes exhibit low inter-observer reproducibility.
- Morphometric studies present disadvantages for diagnosing endometrial intraepithelial neoplasia.
Purpose:
- To review the literature on the terminology and classification of endometrial hyperplastic lesions.
- To emphasize the low reproducibility of histological diagnosis based on WHO criteria.
- To discuss the limitations of morphometric studies in diagnosing endometrial intraepithelial neoplasia.
Summary:
- The paper critically examines current data on endometrial hyperplasia classification, highlighting diagnostic inconsistencies.
- It underscores the poor reproducibility of histological diagnoses using existing WHO criteria.
- The limitations of morphometric analysis for endometrial intraepithelial neoplasia are detailed.
Impact:
- Simplifying the WHO classification for endometrial hyperplastic changes is proposed.
- Adopting uniform criteria and terminology for endometrial precancerous conditions is recommended.
- Improved diagnostic consistency can lead to better patient management and outcomes.
Related Concept Videos
Cellular Adaptation IV: Dysplasia and Metaplasia
DysplasiaDysplasia refers to abnormal changes in the size, shape, and organization of mature cells, characterized by pleomorphism, nuclear abnormalities, and increased mitotic activity. It commonly affects epithelial tissues, including the cervix, gastrointestinal tract, respiratory mucosa, and endometrium. Although it may occur alongside hyperplasia, dysplasia is not a true adaptive response but a preneoplastic change with potential to progress to cancer.When confined above the basement...
Cellular Adaptation III: Hyperplasia
Hyperplasia is an increase in the number of cells in a tissue or organ due to enhanced cell division. It is an adaptive, controlled response to stimuli such as injury, hormones, or stress, involving mitosis to produce genetically identical cells and support tissue repair and regeneration.Tissue CapacityCertain tissues, including the epidermis, intestinal epithelium, bone marrow, and fibroblasts, have a high potential for hyperplasia. Others, such as bone, cartilage, and smooth muscle, show...
Disorders of the Female Reproductive System
The female reproductive system can be affected by several disorders, including Premenstrual Syndrome (PMS), Premenstrual Dysphoric Disorder (PMDD), endometriosis, and various forms of cancer. PMS and PMDD are cyclical conditions that cause physical and emotional distress, with symptoms that include edema, mood swings, and food cravings. PMDD is a more severe form of PMS characterized by increased symptom severity that peaks during the luteal phase and tends to improve or resolve shortly after...
Proliferative Phase
The proliferative phase typically occurs after menstruation and lasts between 6 to 13 days in a standard 28-day cycle. This phase involves the reconstruction of the endometrium, guided by estrogen produced by the developing ovarian follicle.
Notably, the stratum basale, the basal layer of the endometrium, including the basal parts of the uterine glands, remains unaffected by menstruation. Stem cells in this layer undergo mitosis, regenerating the stratum functionalis and thickening the...
Notably, the stratum basale, the basal layer of the endometrium, including the basal parts of the uterine glands, remains unaffected by menstruation. Stem cells in this layer undergo mitosis, regenerating the stratum functionalis and thickening the...
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
