Pratibha Issar1, Sanjeev Kumar Issar2. 1. Department of Radiodiagnosis, Jawahar Lal Nehru Hospital and Research Centre, Bhilai, Chhattisgarh, 490 006, India. mareesh_23@yahoo.co.in. 2. Department of Radiodiagnosis, Jawahar Lal Nehru Hospital and Research Centre, Bhilai, Chhattisgarh, 490 006, India.