Image findings of a tailgut cyst. Case report and short review of the literature.

We present a case of retrorectal hamartoma (tailgut cyst). Imaging findings on ultrasound, computed tomography and magnetic resonance imaging, pathologic findings, as well as the diagnostic pitfalls during the patient's management are documented. As it is a rare lesion with a non specific clinical presentation, it is usually misdiagnosed. Our aim is to present image characteristics of these lesions in all modalities and include retrorectal hamartomas in our differential diagnosis in patients with lesions with similar image findings.