De Novo Psoriasis Vulgaris Diagnosed after Nivolumab Treatment for Refractory Hodgkin’s Lymphoma, Completely Resolved after Autologous Hematopoietic Stem Cell Transplantation

Figure 1

Skin lesions and skin biopsy with hematoxylin-eosin stain. (a) After 6 cycles of nivolumab and before ASCT: scaly erythematous annular plaque on the right tibia. (b) Twelve months after ASCT: skin lesions completely disappeared. (c) Skin biopsy: epidermis lesions showing hyperkeratosis. (d) Skin biopsy: lesions showing acanthosis (white arrow) and perivascular infiltration of mononuclear cells indicating chronic inflammation (black arrow).