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Updated: Jun 22, 2026

Microsatellite DNA Genotyping and Flow Cytometry Ploidy Analyses of Formalin-fixed Paraffin-embedded Hydatidiform Molar Tissues
Published on: October 20, 2019
Chest computed tomography before evacuation of hydatidiform mole
1Department of Obstetrics and Gynecology, Kyungpook National University School of Medicine, Daegu, Korea.
Chest CT is useful for detecting pulmonary micrometastasis in hydatidiform moles. This imaging modality should be considered during initial evaluation, as chest X-rays are often ineffective.
Area of Science:
- Oncology
- Radiology
- Gynecology
Background:
- Hydatidiform moles can metastasize to the lungs.
- Accurate detection of pulmonary micrometastasis is crucial for patient management.
Purpose of the Study:
- To assess the utility of chest computed tomography (CT) in identifying pulmonary micrometastasis in patients with hydatidiform moles.
- To compare the effectiveness of chest CT with chest X-ray for diagnosing pulmonary micrometastasis.
Main Methods:
- Retrospective analysis of 48 hydatidiform mole cases.
- Comparison of data between pulmonary metastatic and non-metastatic groups.
- Statistical analysis using Mann-Whitney, Kaplan-Meier, and log-rank tests.
Main Results:
- Pulmonary micrometastasis was detected in 57% of patients who underwent initial chest CT.
- Significant factors included time to serum beta-hCG remission, pre-evacuation beta-hCG levels, and uterine size.
- Persistent gestational trophoblastic disease (GTD) occurred in 38% of the metastatic group versus 25% in the non-metastatic group.
- Chest X-ray missed micrometastasis in 64% of suspected cases.
Conclusions:
- Chest X-ray is inadequate for diagnosing pulmonary micrometastasis in hydatidiform moles.
- Chest CT should be incorporated into the initial evaluation of hydatidiform moles to detect pulmonary micrometastasis.
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