BACKGROUND:

Endometrial polyps are overgrowths of the endometrial mucosa, one of the most common causes of abnormal uterine bleeding and may be associated with premalignant and malignant endometrial lesions. There are hysteroscopic features that help differentiate a benign or malignant lesion. Metaplastic polyp is a hysteroscopic finding characterized by lamellar surfaces and hyperkeratosis, with white and hyperreflective areas.

CLINICAL CASES:

Three clinical cases of patients under 40 years of age, with abnormal uterine bleeding where the common hysteroscopic finding was metaplastic polyp, a premalignant finding that was confirmed by pathological analysis and positivity of the immunohistochemistry marker p63. Case 1. 28-year-old female, nulliparous, obese, with a history of polycystic ovary syndrome, with endometrial thickening and hysteroscopy, with polyp with hyperkeratotic surface, in the form of irregular sheets, with excrescences and exophytic lesions. Case 2. 25-year-old patient, with irregular thickened endometrium and hysteroscopy with finding of transparent polyps, with mild vascular changes and surface with whitish hyperrefringent areas. Case 3. 38-year-old patient with a history of polycystic ovary syndrome and obesity. At hysteroscopy the endometrium was found to be irregularly hyperplastic, with vascular changes and polyps with hyper-refringent, solid, white superficial areas.

CONCLUSIONS:

In young patients, with hysteroscopic finding of metaplastic polyp should be considered and premalignant and malignant endometrial disease should be ruled out. The study should be completed with immunohistochemical markers (p63), specific for squamous metaplasia.

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