Even though molecular determinants of the obtained resistance of myeloid progenitors to lenalidomide stay to be established, resistance was connected with acquisition of new cytogenetic aberrations, and notably, Patient 8, who did not have a reply from the outset, got a complex karyotype already. Today’s findings have clinical implications, since the identification of specific stem cells in myelodysplastic syndrome might provide a sensitive tool for surveillance during therapeutic targeting.Scott, M.D., Matthew A. Lewis, M.D., and Mark H. Goldgeier, M.D.: Outbreak of Mycobacterium chelonae Infection Associated with Tattoo Ink Since 2003, an increasing number of published case reviews have linked tattooing with localized infections due to atypical mycobacteria.1-13 Mycobacterium chelonae is certainly a rapidly growing type of nontuberculous mycobacteria; overall, it is an uncommon reason behind cutaneous infections.14 an investigation is defined by us of an outbreak involving 19 persons with presumed M.