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Diffusion weighted MR imaging (DWI) and ADC values in endometrial carcinoma
Imrana Masroor1, Muhammad Zeeshan, Shaista Afzal
1Department of Radiology, The Aga Khan University Hospital, Karachi.
Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|November 17, 2010
Summary
Diffusion-weighted imaging (DWI) MRI is a sensitive tool for detecting endometrial cancer, showing significantly lower Apparent Diffusion Coefficient (ADC) values in malignant tissues compared to normal endometrium.
Area of Science:
- Radiology
- Oncology
- Medical Imaging
Background:
- Endometrial cancer diagnosis relies on imaging and histopathology.
- Diffusion-weighted imaging (DWI) offers insights into tissue cellularity.
Purpose of the Study:
- To assess the sensitivity of DWI-MRI in detecting endometrial cancer.
- To compare Apparent Diffusion Coefficient (ADC) values between malignant and normal endometrium.
Main Methods:
- A cross-sectional analytical study was conducted.
- MRI with DWI was performed on patients with suspected endometrial malignancy and controls.
- ADC values and signal characteristics were analyzed, with histopathology as the gold standard.
Main Results:
- DWI-MRI demonstrated a sensitivity of 77.77% for detecting endometrial carcinoma.
- Mean ADC values were significantly lower in abnormal endometrium (0.730±0.215 x10-3 mm2/sec) compared to normal (1.265±0.305 x10-3 mm2/sec).
- False positives were linked to secretory/hyperplastic endometrium; false negatives occurred in specific adenocarcinoma subtypes.
Conclusions:
- DWI-MRI is a sensitive method for detecting endometrial cancer.
- Lower ADC values are indicative of endometrial malignancy.
- Physiological and histopathological variations can influence results.
