title: Myeloid sarcoma developing in pre-existing pyoderma gangrenosum.
abstract: We report here a case of pyoderma gangrenosum in a patient with myelodysplastic syndrome developing into myeloid sarcoma as a sign of transformation to acute leukaemia. The patient was treated successfully with intensive chemotherapy and achieved complete remission, and her otherwise expanding ulcers started to heal. This is the first reported case of secondary blastic infiltration in pyoderma gangrenosum, and it underlines the importance of performing re-biopsy of non-healing ulcers, especially in patients with an underlying haematological disease.
authors.affiliation: Department of Haematology, Odense University Hospital, Odense C, Denmark. idabk@dadlnet.dk
authors.forename: Ida Bruun
authors.initials: IB
authors.lastname: Kristensen
authors.forename: Hanne
authors.initials: H
authors.lastname: Møller
authors.forename: Mette Wanscher
authors.initials: MW
authors.lastname: Kjaerskov
authors.forename: Knud
authors.initials: K
authors.lastname: Yderstraede
authors.forename: Michael Boe
authors.initials: MB
authors.lastname: Møller
authors.forename: Olav J
authors.initials: OJ
authors.lastname: Bergmann