1. 23 Histologically, the mass lesion was diagnosed as a dorsally sequestered disc herniation.

2. A well Circumscribed mass lesion with no microcalcifications or architectural distortions would be more in favour of a benign lesion

3. Ultrasound features are well defined predominantly hypoechoic or isoechoic Capsulated solid mass lesion arising from tail or head of epididymis

4. If they occur in aleukemic patients incorrect diagnoses may result. Differential diagnostic considerations are being discussed by presenting the case of a 58-year-old man who experienced spinal cord compression by an isolated epidural mass lesion.