Pseudo- or real progression? An ovarian cancer patient under nivolumab: A case report

Figure 1 A schematic model of pseudoprogression in a lymph node. A: Healthy lymph node without infiltration; B: Tumor cells infiltrating the tissue, which leads to growth; C: Infiltration of tumor cells into a preexisting tumor cell conglomerate resulting in a further growth; D: Immune cells and healthy tissue cells.