case_images: PMC10615584_01
case_images: The intraoral manifestation of the lesion.
case_images: CRID2023-7243119.001.jpg
case_images: PMC10615584_01_CRID2023-7243119.001.jpg
case_images: fig1
case_images: There were two crater-like ulcers measuring 1*1 cm, covered with a fibrin leukocyte membrane on the posterior aspect of the lesion (Figure 1).
case_images: OPG view revealed a radiolucent lesion with irregular borders, filling the right maxillary sinus with erosion and destruction of the sinus's pharyngeal wall. The anterior wall of the pterygomaxillary fissure's integrity has been lost, and the medial wall of the sinus is not visible. To some degree, thinning and erosion in the lower part of the right sinus can be seen.
case_images: CRID2023-7243119.002.jpg
case_images: PMC10615584_01_CRID2023-7243119.002.jpg
case_images: fig2
case_images: In addition, to some degree, thinning and erosion could be seen in the lower part of the right sinus (Figure 2).
case_images: (a, b) Axial sections of cone-beam computed tomography (CBCT) presented a homogeneous hypodense lesion in the right maxillary sinus. The lesion has a destructive nature, destroying the buccal and lingual wall of the right alveolar process. In higher cuts, the lesion has destroyed the sinus's anterior, middle, and posterior lateral walls. The lesion has extended to the nasal cavity by destroying the medial and anterior walls of the sinus and presents as a mass of soft tissue in the nasal fossa. The periosteal reaction is not seen, and the pterygoid processes are intact. The sphenoid sinus is normal without any secretions, but the lateral wall of the right ethmoid sinus has been destroyed by the lesion. The lesion has caused nasal septum deviation.
case_images: CRID2023-7243119.003.jpg
case_images: PMC10615584_01_CRID2023-7243119.003.jpg
case_images: fig3
case_images: Histopathology findings show a diffuse proliferation of medium-to-large pleomorphic lymphoma cells with regular nuclear membranes, some distinct nucleoli, unclear cells, and cytoplasm borders, which were arranged in dense cell sheets with a fine vascularized and inflammatory background. Much mitotic and apoptotic activity was also observed, with no evidence of specific differentiation.
case_images: CRID2023-7243119.004.jpg
case_images: PMC10615584_01_CRID2023-7243119.004.jpg
case_images: fig4
case_images: Much mitotic and apoptotic activity was also observed, with no evidence of specific differentiation (Figure 4).