The recovery time and risk of recurrence of miniradical transcanal mastoidectomy in Viet Nam are currently unknown. In this study, the authors used a series of clinical cases to determine the recovery time and the recurrence of miniradical transcanal mastoidectomy. Forty (40) patients with cholesteatomas otitis, adhesive otitis grade IV, or attic inflammation containing small and localized lesion have been selected for this study. They are 29 female and 11 male, ages ranging from 16 to 71 years olds (mean age of 40.6). Thirty-five of forty patients (or 87.5 percent) had cholesteatoma. Twenty-seven of the forty (27/40) patients underwent reconstructive tympanal cavity. Within 14 + or - 4.4 days post-surgery, there were no visible. signs of otorrhea. After 14 days post-surge~, 26/~0 patients (65 percent) exhibited vistble signs of otorrhea. After 8 weeks following the reconstructive sur~ gery, all patients (100 percent) with miniradical mastoidectomies were stable. In these patients, minradical mastoectomies were able to double the width of the external a.uditory canal and widen the earhole large enough for drainage. This is an effective mini-surgery that yields perfect cavities of mastoidectomy, and achieves a faster recover time and a better hearing ability.