DEK::AFF2 fusion-associated middle ear non-keratinizing squamous cell carcinoma: A case report

Figure 2 Histological examination of the tumor. A: Histological analysis showed the tumor manifested as an endophytic papillary carcinoma resembling transitional epithelium with inverted nest-like proliferation patterns; B: The basal cells exhibited fence-like arrangements, interspersed with extensive areas of necrosis; C: Inflammatory cells, including lymphocytes, plasma cells, and neutrophils, were considerably present in both the epithelial and stromal layers.