Figure 2
From: MRI and PET/CT in the assessment of lymph node metastases in head and neck cancer

(A) MRI of this neck resulted in a false negative finding when (B) PET/CT and histological specimen confirmed malignancy. Red arrows mark the region of interest in this case. The time from imaging to surgery was 27 days (MRI) and 33 days (PET/CT). Small volume lesions remain an Achilles heel in the imaging evaluation of lymph node malignancies.