Morular metaplasia of the endometrium misdiagnosed as adeno-acanthoma in a patient with tubal pregnancy. A case report
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A 41-year-old woman underwent a fractional dilatation and curettage for menorrhagia and a diagnosis of adeno-acanthoma was made from the curettings. However, the subsequently hysterectomy and bilateral salpingo-oophorectomy specimen revealed the presence of a clinically undiagnosed tubal pregnancy and extensive immature squamous metaplasia (morules) of the endometrium. No malignancy was present. A review of the original curettings lead to the recognition of the benign lesion already present at that stage. Difficulties in the differential diagnosis are discussed. The presence of endometrial polyps is considered as a possible factor responsible for the morular metaplasia rather than the tubal pregnancy, which seems to be a previously undescribed and interesting coincidence.
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