[Oncology] How serious is endometrial adenomyomatous polyp?

Endometrial adenomyomatous polyps are a relatively uncommon but generally benign uterine lesion. They consist of a mixture of endometrial glandular tissue, smooth muscle (myometrial) elements, and stromal components—essentially representing a localized overgrowth of both endometrium and adjacent myometrium within the uterine cavity. While histologically distinct from simple endometrial polyps or leiomyomas, they are not considered malignant and do not carry an increased risk of endometrial cancer.

Clinically, these polyps may cause abnormal uterine bleeding—including menorrhagia, intermenstrual spotting, or postmenopausal bleeding—as well as pelvic pressure or discomfort, particularly if large. Symptoms often correlate with size and location rather than inherent biological aggressiveness. Importantly, although rare, atypical hyperplasia or even early endometrial carcinoma can coexist within or adjacent to such lesions, especially in patients with risk factors like obesity, unopposed estrogen exposure, or chronic anovulation. Therefore, complete excision and thorough histopathologic evaluation are essential for definitive diagnosis and to exclude concurrent malignancy or premalignant changes.

Management typically involves hysteroscopic polypectomy, which is both diagnostic and therapeutic. Recurrence is possible but uncommon after complete removal. Long-term surveillance is usually not required in the absence of high-risk clinical features or abnormal histology. Overall, while endometrial adenomyomatous polyps warrant appropriate evaluation and treatment due to their symptomatic potential and need for histologic confirmation, they are not inherently “severe” in terms of malignant potential or systemic impact.