Unusual form of squamous cell carcinoma of the cervix extending in situ into the endometrium: Three case reports and review of literature

Squamous cell carcinoma of the cervix is the most common gynecological malignancy in India. Direct extension from a cervical growth can involve the uterine corpus, but a superficial spread, without invasion of the underlying myometrium, is uncommon. We report three cases of squamous cell carcinoma of the cervix, with superficial extension to the whole endometrial cavity, by expansile intraepithelial growth. Clinically, two of our cases presented with pyometra and one with vaginal bleeding and discharge. The tumor had spread superficially into the entire endometrial cavity, up to the fundus, replacing the columnar epithelium totally. This was a rare phenomenon, with fewer than 30 cases reported in literature.