Objective Vestibular schwannoma (VS) is a benign tumor of the lateral skull base. Different microscopic surgical techniques are described in literature: the retrosigmoid and translabyrinthine approaches are used to treat big tumors located in the cerebellopontine angle, and the middle cranial fossa approach is utilized for small tumors with good hearing preservation. The expanded transcanal transpromontorial (ExpTT) approach is a combined microscopic-endoscopic technique previously indicated for Koos stage I and II VS and now proposed for larger VS, up to 3 cm in diameter, with linear progression into the cerebellopontine angle and touching the brainstem. Study Design The study was a retrospective case series of patients who underwent ExpTT surgery for VS in our ear, nose, and throat department. Setting We reviewed the surgical videos and electrophysiologic data recorded during the surgical operations. Subjects and Methods From January 2015 to January 2017, 20 patients affected by Koos stage II and III VS underwent surgery in our department with the ExpTT approach. This novel technique is described step by step, with a focus on the surgical procedure and anatomic landmarks; outcomes are detailed in terms of early and late complications. The mean follow-up was 15 months. Results The ExpTT approach permitted, in all patients, gross total resection of the tumor without any complication and with preservation of facial nerve function. All patients had a good postoperative recovery. Conclusion The ExpTT technique is a new approach that combines the advantages of a microscopic technique with the ones offered by the endoscope in removal of VS.
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. Keywords: laryngectomy, pharyngo-cutaneous fistula, reconstructive surgery, hyperbaric oxygen therapy, negative pressure wound therapy, laryngeal cancer 14.3% for primary total laryngectomy (PTL) and 27.6% for salvage total laryngectomy (STL), according to the most recent meta-analysis published in the international literature. 1 Several risk factors have been analyzed in order to understand the etiology of this major complication: previous radiotherapy (RT) or chemoradiotherapy (CHT), type of surgery, T and N stage, a short interval between the end of RT and laryngectomy, hemoglobin levels lower than 125 g/L preoperative as well as postoperative, comorbidities such as diabetes, liver diseases or hypothyroidism, and surgical aspects such as neck dissection, previous tracheotomy, surgical wound infection, resection of the pharynx and its closure after laryngectomy, or the use of non-irradiated tissue to reinforce the pharyngeal suture. [2][3][4][5] The treatment of PCF is crucial in patients who underwent laryngectomy; the persistence of this abnormal communication is associated with delay in adjuvant treatment, prolonged hospital stay, requirement for reoperation, and mortality from, for example, carotid blowout or aspiration pneumonia. The increased incidence of post-laryngectomy PCF in the modern era of organ preservation therapy has driven considerable efforts to develop
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 endoscopic approach demonstrated to be useful for cochlear implantations of children with CHARGE syndrome. It allows the surgeon to perform a direct 'safe' cochleostomy in difficult anatomical conditions. Three children with CHARGE syndrome underwent endoscopic-assisted cochlear implant surgery at the Tertiary University Referral Center of Modena and Verona between January 2014 and September 2015. A review of clinical data and videos from the operations was made. All procedures were re-analyzed and codified. Three children, all females (mean age 4.6 years; range: 3-7 years) underwent surgery. Two primary surgical procedures and one revision surgery, for secondary cholesteatoma, were performed. CT scans demonstrated complex malformations of middle and inner ear with anomalous course of the facial nerve. In all subjects, a transcanal endoscopic cochleostomy was performed; no immediate or late postoperative complications were observed. Discharge from hospital was the day post-surgery. The current mean follow-up is 12.5 months (range: 8-19 months).
Transcanal retrocochlear approach for VS removal allows preservation of cochlea and cochlear nerve function. This is the first step towards developing an effective surgical technique for VS removal and hearing rehabilitation with CI.
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