Hamartomatous endocervical polyp with heterologous mesenchymal tissue

We present an endocervical polyp with heterologous elements. Although a few neoplastic cervical lesions with cartilaginous and adipocytic heterologous tissue have been reported, an endocervical polyp with heterologous cartila ge and adipose tissue has not been reported before our case. The patient wa s a 33-year-old woman who presented with abnormal uterine bleeding. On phys ical examination, there were no remarkable findings other than a cervical p olyp protruding into the cervical canal. The polyp was removed. Pathologica l examination revealed an endocervical polyp with typical epithelial featur es. The stroma of the polyp contained mature cartilage islands and adipose tissue. There were also many thick-walled vascular structures. Neither stro mal periglandular condensation nor atypia was found. Mitotic figures were n ot observed. Arteriolar structures did not contain internal elastic lamina. In our opinion, these pathological findings are all consistent with a hama rtomatous lesion rather than with a true neoplasm.