Een man met een huidafwijking op zijn buik

A 56-year-old man presented with a skin lesion 2 days after surgery for a perianal abcess. The lesion was red, swollen and very painful, with central necrosis and arose shortly after starting coumarine therapy.

Conflict of interest: drs. G.J.M. Mostard received remuneration for lectures given about hypertension, ambulatory blood pressure monitoring and diabetes mellitus. Financial support for this article: none declared.