Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005, India. manojpandey@wjso.com.Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005, India.Department of Histopathology, Lal Path Labs, New Delhi, India.Dharamsheela Cancer Centre, Delhi, India.Department of Pathology, SRL Lab, Varanasi, India.