Anatomic pathology selected abstracts
CAR T-cell therapy-related gastrointestinal toxicity presents with symptoms like abdominal pain and diarrhea, occurring 1.5 to eight months post-treatment. Histologic examination reveals a graft versus host disease-like pattern, with epithelial apoptosis and a paucity of B cells and plasma cells, necessitating careful differentiation from mimics like graft versus host disease and infection.