[Cutaneous complications following hematopoietic stem cell transplantation].

BACKGROUND: Hematopoietic stem cell allograft is a treatment for patients with severe constitutional or acquired hematopoietic system diseases. This act is always linked to complications requiring multidisciplinary care. Our study describes the post-allograft cutaneous complications.

METHODS: A prospective study was conducted at the Hematology department of "20 Août Hospital" in Casablanca during a period going from January 2018 to December 2020; including all patients who presented acute or chronic cutaneous complications post-allograft.

RESULTS: Twenty-five patients were included. All patients received induction chemotherapy (Busulfan/Fludarabine or Busulfan/Melphalan). A skin infection was found in 8 patients : four cases of Malassezia folliculitis, one case of perineal zona, one case of genital herpes, one case of varicella and one case of Candida sepsis. The acute graft versus host reaction was found in 3 patients, revealed by an erythematous rash all over the body. The chronic graft versus host reaction was found in five patients on a lichenoid form. Nine patients had a hyperpigmentation of the folds followed by detachment in the same areas, concluding to a Busulfan toxidermy.

DISCUSSION: Hematopoietic stem cell allograft has many complications. The literature mainly specifies hematological and digestive complications, while skin complications are little described. Our series is special by reporting different types and mechanisms of skin complications that can occur; with a predominance of skin graft-on-host reactions and infections. It also reports an unusual Busulfan toxidermy.