Morcellating uterine mesenchymal tumors: The pathologist's view

Area of Science:

• Gynecologic Pathology
• Surgical Pathology
• Oncology

Background:

• Morcellation of uterine specimens is common in gynecologic surgery.
• Histological evaluation of morcellated tissue poses diagnostic challenges.
• Accurate diagnosis is crucial for patient management and prognosis.

Purpose of the Study:

• To identify histological challenges in diagnosing uterine mesenchymal tumors from morcellated specimens.
• To assess the incidence of unexpected malignancy in morcellated uterine tissues.
• To analyze discrepancies between initial and subsequent diagnoses.

Main Methods:

• Retrospective review of 631 cases of morcellated uteri (2008-2014).
• Noted incidence of leiomyosarcoma (LMS) and endometrial stromal sarcoma (ESS).
• Included cases with diagnostic discrepancies between morcellated and subsequent findings.

Main Results:

• Three LMS and five ESS diagnoses were confirmed.
• Malignant tumors were found in patients aged 25-48.
• Several cases showed diagnostic discrepancies, including ESS misdiagnosed as benign nodules and vice versa.

Conclusions:

• Malignant endometrial stromal and smooth muscle tumors can occur in young patients.
• Histological limitations in morcellated material can lead to diagnostic errors (over- or underdiagnosis).
• Careful pathological review is essential for accurate diagnosis of uterine mesenchymal tumors.