case_images: PMC11750508_01
case_images: Teclistamab injection site reaction presenting as an erythematous, annular plaque located on the right abdomen.
case_images: gr1.jpg
case_images: PMC11750508_01_gr1.jpg
case_images: fig1
case_images: Dermatologic examination revealed a single, indurated, erythematous, and purpuric annular plaque on the right abdominal pannus (Fig 1).
case_images: Histopathology of punch biopsy demonstrating infiltrate of neutrophils and lymphocytes extending into deep reticular dermis and superficial subcutis with magnifications of (A) 25x and (B) 400x (hematoxylin-eosin stain).
case_images: gr2.jpg
case_images: PMC11750508_01_gr2.jpg
case_images: fig2
case_images: No necrosis was visualized and the epidermis was unremarkable (Fig 2).