Herlyn-Werner-Wunderlich syndrome (HWWS)-associated gynecological malignancies: A case report and literature review

•HWWS is a congenital anomaly characterized by uterine didelphys, unilateral blind hemivagina, and ipsilateral renal agenesis.•We presented a case of HWWS-associated cervical cancer in which vaginal bleeding was the first presentation of HWWS.•HWWS may be present in the elderly women, even without a previous diagnosis of urogenital anomaly.•A literature review revealed an increased incidence of clear cell carcinoma histology in women with HWWS.