Purpose: The aim of this study is to evaluate speech perception outcomes after a frequency reallocation performed through the creation of an anatomically based map obtained with Otoplan^®, a tablet-based software that allows the cochlear duct length to be calculated starting from CT images. Methods: Ten postlingually deafened patients who underwent cochlear implantation with MED-EL company devices from 2015 to 2019 in the Tertiary referral center University Hospital of Verona have been included in a retrospective study. The postoperative CT scans were evaluated with Otoplan^®; the position of the intracochlear electrodes was obtained, an anatomical mapping was carried out and then it was submitted to the patients. All patients underwent pure tonal and speech audiometry before and after the reallocation and the audiological results were processed considering the Speech Recognition Threshold (SRT), the Speech Awareness Threshold (SAT) and the Pure Tone Average (PTA). The differences in the PTA, SAT and SRT values before and after the reallocation were determined. The results were statistically processed using the software Stata with a significance value of α < 0.05. Results: The mean values of SRT (61.25 dB versus 51.25 dB) and SAT (49 dB versus 41 dB) were significantly lower (p: 0.02 and p: 0.04, respectively) after the reallocation. No significant difference was found between PTA values (41.5 dB versus 39.25 dB; p: 0.18). Conclusions: Our preliminary results demonstrate better speech discrimination and rapid adaptation in implanted postlingually deaf patients after anatomic mapping and subsequent frequency reallocation.

The pharyngocutaneous fistula (PCF) is one of the most common post-operative complications in patients undergoing laryngectomy. Up till now, there is no universally accepted algorithm for managing of PCFs and several treatment modalities are used for wound healing. The English language literature was searched using PUBMED databases with the keywords “laryngectomy”, “pharyngocutaneous”, “fistula”, “treatment”, and “management” from January 1, 1999 to June 1, 2019; we selected 35 studies according to inclusion criteria and we conducted a systematic review of the articles. The analysis of the international literature shows a high variability of treatment approaches; there is no consensus about conservative treatment and waiting time, and neither about the indication for surgical treatment or the ideal surgical technique. A first attempt of a conservative measure is mandatory in all cases of PCF. In case of failure of conservative measures surgical treatment should be considered: direct closure and local flap are suitable for small defects, pedicled or free flaps showed good to excellent results in closure of large and complex cervical defects. Other non-invasive treatment such as hyperbaric oxygen therapy (HBOT) and negative pressure wound therapy (NPWT) showed promising results but in limited case series.