Fig. 1.
Patient 3, who failed to respond to chemotherapy for mantle cell lymphoma (MCL), presented with nasal bleeding and obstruction at the third progression of MCL and demonstrated nasal airway obstruction due to a bulky mass. (a) Pre-treatment gadolinium-enhanced T1-weighted magnetic resonance imaging (MRI) showing an irregular bulky mass arising from the nasal cavity to the nasopharynx. (b) Post-treatment positron emission tomography with 2-deoxy-2-[fluorine-18]fluoro-d-glucose integrated with computed tomography (18F-FDG PET/CT) showing a complete response at one month after 8 Gy single fraction radiation therapy.