Atypical Polypoid Adenomyoma Presenting as Abnormal Uterine Bleeding in a Reproductive-Aged Woman With Prior Hysteroscopic Resection: A Case Report

A 34-year-old female (G0P0) with a history of two prior hysteroscopies and fibroids presented to an outpatient obstetrician-gynecologic clinic for abnormal uterine bleeding.Ultrasound confirmed the presence of a submucosal fibroid and an abnormally heterogeneous endometrium.Subsequent hysteroscopic myomectomy and polypectomy were performed, with specimens sent for pathology.The pathology report for both lesions was significant for atypical polypoid adenomyoma (APA), a rare benign intrauterine lesion.This case report highlights the importance of further research on this pathology and its possible implications for the future care of patients with this diagnosis.