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A case report: Rectal endometriosis mimicking rectal cancer
Li-Juan Zhao1, Yuan-He Wang1, Jing-Dong Zhang1
1Department of Gastrointestinal Medical Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang 110042, Liaoning Province, PR China.
Introduction:
Rectal endometriosis is rare in women and imaging characteristics are similar with that of rectal cancer, which is one of the most common malignancies.
Presentation Of Case:
A 36 years old woman with a suspicious diagnosis of cervical carcinoma in a tertiary hospital visited our hospital, complaining about vaginal bleeding after copulation for six months, accompanying with constipation and diameter-thinning stool. Vaginal and cervical biopsy only showed chronic inflammation. Colonoscopy found a mass at the rectum 4 cm from the anus, but the biopsy showed different diagnoses. Partial resection was eventually operated and the final diagnosis was confirmed as rectal endometriosis.
Discussion:
Rectal endometriosis is prone to be misdiagnosed as rectal cancer. Small specimen is sometimes insufficient to make a correct diagnosis. Extensive examination should be done to confirm the diagnosis and rash decision should never be encouraging.
Conclusion:
Rectal endometriosis should always be considered as one of the differential diagnoses in female who have a mass at the rectum. An adequate specimen should be obtained to confirm the histopathological diagnosis.
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