Uterine pseudotumors.

Area of Science:

• Gynecologic Pathology
• Uterine Histopathology
• Diagnostic Challenges in Oncology

Background:

• Pseudotumoral uterine lesions encompass benign reactive, artefactual, epithelial, and mesenchymal changes.
• These lesions are occasionally misdiagnosed as malignant or premalignant uterine conditions.
• Distinguishing pseudotumoral lesions from true neoplastic processes is critical for patient care.

Purpose of the Study:

• To review and characterize common pseudotumoral lesions of the endometrium.
• To highlight the diagnostic challenges posed by these lesions.
• To emphasize the importance of differentiating benign pseudotumoral changes from premalignant and malignant uterine lesions.

Main Methods:

• Review of histopathological features of various pseudotumoral uterine lesions.
• Analysis of differential diagnostic criteria between benign and malignant uterine entities.
• Discussion of associated findings and their impact on diagnosis and therapy.

Main Results:

• Common pseudotumoral endometrial lesions include metaplasias, pseudolymphomas, inflammatory pseudotumor, adenomyosis, and artefactual changes.
• These benign changes can exhibit architectural or cytologic abnormalities, mimicking malignancy.
• Pseudotumoral lesions may coexist with endometrial hyperplasia, carcinoma, polyps, or occur in hormonally treated or normal endometrium.

Conclusions:

• Pseudotumoral uterine lesions require careful histopathological evaluation to avoid misdiagnosis.
• Accurate differentiation from premalignant and malignant lesions is essential for appropriate therapeutic decisions.
• Awareness of these benign mimics is crucial for gynecologic pathologists and clinicians.