Fig. 1

Criteria for diagnosis of unilateral nasopharyngeal carcinoma: A MRI of a lesion that did not exceed the midline of the nasopharynx; B MRI of a lesion that reached the midline but did not exceed the midline
Criteria for diagnosis of unilateral nasopharyngeal carcinoma: A MRI of a lesion that did not exceed the midline of the nasopharynx; B MRI of a lesion that reached the midline but did not exceed the midline