Perimenopausal bleeding patterns and pathologic findings.

The charts of 500 sequential perimenopausal patients were reviewed and their alterations in menstrual flow were characterized as fitting one of three patterns. Sixty-two patients (12%) had sudden amenorrhea, 347 (70%) had oligomenorrhea and/or hypomenorrhea, and 91 (18%) had menorrhagia, metrorrhagia, and/or hypermenorrhea. All of the patients in the menorrhagia/metrorrhagia and/or hypermenorrhea group had histologic evaluations to rule out the presence of premalignant or malignant disease; 17 women (19%) in this group had premalignant or malignant findings. In addition, 4 of the 5 women with malignancies had intermenstrual bleeding. Of the 9 women in the study with intermenstrual bleeding, 4 had invasive cancer and 2 had endometrial hyperplasia. This study documents and highlights the high incidence of premalignant and malignant findings in perimenopausal patients with bleeding patterns other than amenorrhea or oligomenorrhea/hypomenorrhea, and underscores the need for perimenopausal women with menorrhagia, metrorrhagia, and/or hypermenorrhea to undergo thorough evaluation.