<prompt> Mycobacterium causing skin ulcer a M. smegmatisb M. scrofulaceumc M. ulceransd M. fortuitume M. marinumabdacdbdecde  <response>: Mycobacteria causing skin infectionsPost-trauma abscess M.chelonae, M.fortuitum, M.terraeSwimming pool granuloma M.marinumM. BalaneiBuruli ulcer M.ulceransLupus vulgaris M.tuberculosisScrofuloderma M.tuberculosis Abscess and granuloma may break to fonn an ulcer.So, all the organism in above list can cause skin ulcer. 