Neetu Soni1, Paurush Ambesh2, Kumar Sunil3, Manas Jena4. 1. Assistant Professor, Radiology Department, SGPGIMS, Lucknow, Uttar Pradesh, India. Electronic address: neetu_soni06@yahoo.co.in. 2. Department of Internal Medicine, Moti Lal Nehru Medical College, Allahabad, Uttar Pradesh, India. 3. Professor, Radiology Department, SGPGIMS, Lucknow, Uttar Pradesh, India. 4. Department of Radiodiagnosis, SGPGIMS, Lucknow, Uttar Pradesh, India.