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Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications

Cilt: 12 Sayı: 3 31 Aralık 2025
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Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications

Öz

Accurate classification of premalignant and early invasive lesions of the endometrium is of critical importance for the prevention of endometrial carcinoma and for the development of effective treatment strategies. The 2020 World Health Organization (WHO) classification offers an up-to-date framework for the terminology and diagnostic criteria of these lesions. In this context, we evaluated the diagnostic processes and differential criteria of three distinct endometrial lesion cases based on their morphological and immunohistochemical features. Three cases diagnosed in our pathology clinic were retrospectively analyzed. These included non-atypical endometrial hyperplasia, endometrial intraepithelial neoplasia (EIN), and FIGO Grade 1 endometrioid adenocarcinoma. All cases were histologically examined on hematoxylin and eosin (H&E)-stained sections, and immunohistochemical markers (PAX2, p53, p16, ER, PR, vimentin) were used to support the differential diagnosis. In the first case, benign morphology, preserved gland-to-stroma ratio, and absence of cytologic atypia were observed, supporting a diagnosis of endometrial hyperplasia without atypia. The second case exhibited focal glandular crowding, cytologic atypia, and loss of PAX2 expression, consistent with EIN. In the third case, pronounced nuclear atypia, cribriform glandular architecture, and increased proliferative activity supported a diagnosis of FIGO Grade 1 endometrioid adenocarcinoma. The findings suggest that the combined use of morphological assessment and immunohistochemical analysis enhances diagnostic accuracy in evaluating endometrial lesions. The WHO 2020 classification reinforces this multifaceted approach, enabling the early recognition of precancerous lesions and guiding appropriate therapeutic strategies.

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Teşekkür

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Kaynakça

  1. Kurman RJ, Carcangiu ML, Herrington CS, Young RH. WHO Classification of Female Genital Tumours. 5th ed. Lyon: International Agency for Research on Cancer; 2020.
  2. Hoang LN, Quick CM, McCluggage WG. Endometrial precancers and their mimics: Diagnostic updates and challenges. Histopathology. 2022;81(1):38–54.
  3. Fadare O, Quick CM. Contemporary concepts in endometrial hyperplasia and EIN: Diagnostic reproducibility and clinical implications. Mod Pathol. 2023;36(Suppl 1):100123.
  4. Momeni M, Stoler MH, Quick CM. Endometrial intraepithelial neoplasia: Update on diagnostic criteria and clinical significance. Adv Anat Pathol. 2021;28(5):342–350.
  5. Tafe LJ, Garg K, Chew I, Tornos C, Soslow RA. Endometrial glandular lesions and loss of PAX2 expression: Correlation with diagnosis and outcome. Int J Gynecol Pathol. 2020;39(5):403–411.
  6. McCluggage WG. Morphological subtypes of endometrial carcinoma: Diagnostic features, outcomes and molecular correlates. Histopathology. 2020;76(1):59–72.
  7. Hecht JL, Mutter GL. Molecular pathways of endometrial carcinogenesis: From hyperplasia to carcinoma. Int J Gynecol Pathol. 2022;41(3):203–212.
  8. Köbel M, Piskorz AM, Lee S, LePage C, Marass F, Lopes CA, et al. Optimized p53 immunohistochemistry is an accurate predictor of TP53 mutation in ovarian carcinoma and is applicable to endometrial carcinoma. J Pathol Clin Res. 2016;2(4):247–258.

Ayrıntılar

Birincil Dil

İngilizce

Konular

Patoloji

Bölüm

Olgu Sunumu

Yayımlanma Tarihi

31 Aralık 2025

Gönderilme Tarihi

19 Eylül 2025

Kabul Tarihi

26 Kasım 2025

Yayımlandığı Sayı

Yıl 2025 Cilt: 12 Sayı: 3

Kaynak Göster

APA
Turk Alkan, M., Erdem, H., & Canak, O. (2025). Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications. ODÜ Tıp Dergisi, 12(3), 130-137. https://doi.org/10.56941/odutip.1787102
AMA
1.Turk Alkan M, Erdem H, Canak O. Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications. ODU Tıp Derg. 2025;12(3):130-137. doi:10.56941/odutip.1787102
Chicago
Turk Alkan, Meltem, Havva Erdem, ve Orhan Canak. 2025. “Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications”. ODÜ Tıp Dergisi 12 (3): 130-37. https://doi.org/10.56941/odutip.1787102.
EndNote
Turk Alkan M, Erdem H, Canak O (01 Aralık 2025) Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications. ODÜ Tıp Dergisi 12 3 130–137.
IEEE
[1]M. Turk Alkan, H. Erdem, ve O. Canak, “Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications”, ODU Tıp Derg, c. 12, sy 3, ss. 130–137, Ara. 2025, doi: 10.56941/odutip.1787102.
ISNAD
Turk Alkan, Meltem - Erdem, Havva - Canak, Orhan. “Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications”. ODÜ Tıp Dergisi 12/3 (01 Aralık 2025): 130-137. https://doi.org/10.56941/odutip.1787102.
JAMA
1.Turk Alkan M, Erdem H, Canak O. Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications. ODU Tıp Derg. 2025;12:130–137.
MLA
Turk Alkan, Meltem, vd. “Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications”. ODÜ Tıp Dergisi, c. 12, sy 3, Aralık 2025, ss. 130-7, doi:10.56941/odutip.1787102.
Vancouver
1.Meltem Turk Alkan, Havva Erdem, Orhan Canak. Premalignant and Early Invasive Lesions of the Endometrium: Case Presentations in the Light of Current Classifications. ODU Tıp Derg. 01 Aralık 2025;12(3):130-7. doi:10.56941/odutip.1787102

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