Detailed Instructions: In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.
Q:  Epstein - Barr virus - associated nonsmall cell lung carcinoma : undifferentiated " lymphoepithelioma - like " carcinoma as a distinct entity with better prognosis .
A:
lung