
Figure 1
Intra-oral photography of the first endodontic consultation.

Figure 2
Retro-alveolar radiography at the first appointment.

Figure 3
Computed tomography showing a large osteolytic area between left sinus and left upper molars (10 x10 cm (668 x 668 x 668)- 0,150 mm- 90 kV-8 mA 15,117s, ROMEXIS software).

Figure 4
Histological analysis. A. A23 03155 HES_33.3x.: hematoxylin-eosin-safran (HES) coloration, original x33,3 magnification, tumor infiltration in sheets of non-cohesive cells, often crushed, of medium to large size, with barely visible cytoplasm, poorly nucleolated nucleus. Presence of apoptosis images. B. A23 03155 CD20_35 5x: immunohistochemical study using anti-CD20 antibody, original magnification x 35.5, diffuse positivity of all tumor cells in favor of proliferation of B lymphocytes C. A23 03155 KI67_17.6x: immunohistochemical study using the anti-KI67 antibody, original magnification x17.6, highlighting a high proliferation index, in favor of an aggressive B lymphoma.

Figure 5
PET-SCAN after diagnosis and three months later after treatment.

Figure 6
Radiography retro-alveolar post treatment (note the new densification around teeth).
