Collision Tumor of the Cervix: An unusual Variant

Abstract

Cervical cancer is the third most common neoplasm in women around the world, mainly during the fertile age (15-44 years); It is estimated that each year 530,000 women are diagnosed with cervical cancer and of these, 275,000 die. It is clearly established that squamous cell carcinomas can have adenoid differentiation or on the contrary adenocarcinomas present squamoid differentiation, tumors that contain histological mixtures of malignant squamous and glandular cells are known as adenosquamous carcinomas and must be differentiated from the so-called collision tumor of the cervix. The objective of this study is to present a clinical case of cervical collision tumor in view of its low incidence, contributing to the literature. The collision tumor of the cervix was first described in 1964. It is a rare variant of tumors of the uterine cervix, originating from the reserve cells of the squamocellular junction and that must be differentiated from adenosquamous carcinomas. It is defined by the coexistence of two adjacent tumors that are histologically distinct. The proportion of cervical collision carcinoma is 0.4%. Collision tumors of the cervix are a rare entity within gynecological neoplasms, especially cervical cancer.