Spontaneous Complete Regression of Aleukaemic Cutaneous Myeloid Sarcoma without Progression to Leukaemia Over a Long-term Follow-up Period - Hiromi Higaki-Mori; Nanako Yamada; Kanae Ozaki; Midori Filiz Nishimura; Yuichi Yoshida (Acta Dermato-Venereologica)