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      Supratracheal laryngectomy: current indications and contraindications Translated title: Laringectomia sopratracheale: indicazioni e controindicazioni

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          SUMMARY

          Cancer of the larynx in the intermediate/advanced stage still presents a major challenge in terms of controlling the disease and preserving the organ. Supratracheal partial laryngectomy (STPL) has been described as a function-sparing surgical procedure for laryngeal cancer with sub-glottic extension. The aim of the present multi-institutional study was to focus on the indications and contraindications, both local and general, for this type of surgery based on the long-term oncological and functional results. We analysed the clinical outcomes of 142 patients with laryngeal cancer staged pT2-pT4a who underwent STPL. Five-year overall survival (OS), disease-specific survival (DSS), disease-free survival (DFS) and loco-regional control (LRC) rates were: glottic pT2 [71.4%, 95.2%, 76.0%, 76.0%], glottic–transglottic pT3 [85.3%, 91.1%, 86.4%, 88.7%], and pT4a [73.2%, 88.1%, 52.7%, 60.7%], respectively. DFS and LRC prevalences at 5 years were greatly affected by pT4a staging. Five-year laryngeal function preservation (LFP) and laryngectomy free survival (LFS) were: glottic pT2 [90.9%, 95.2%], glottic-transglottic pT3 [84.4%, 93.1%], and pT4a [63.7%, 75.5%], respectively, being affected by pT staging and age 65 ≥ years (LFP 54.1%). As a result of Type III open horizontal partial laryngectomies (OPHLs) (supratracheal laryngectomies), the typical subsites of local failure inside the larynx were the mucosa at the passage between the remnant larynx and trachea, the mucosa at the level of the posterior commissure and the contralateral cricoarytenoid unit as well as outside the larynx at the level of the outer surface of the remnant larynx. For patients with glottic or transglottic tumours and with sub-glottic extension, the choice of STPL can be considered to be effective, not only in prognostic terms, but also in terms of functional results.

          RIASSUNTO

          Il cancro della laringe in fase intermedio / avanzata rappresenta ancora una grande sfida in termini di controllo della malattia e di preservazione d'organo. La laringectomia parziale sopratracheale (STPL) è stata descritta come procedura chirurgica di function-sparing per il cancro della laringe con estensione sub-glottica. Lo scopo del presente studio multi-istituzionale è di concentrarsi sulle indicazioni e controindicazioni, sia locali che generali, per questo tipo di chirurgia sulla base dei risultati oncologici e funzionali a lungo termine. Abbiamo analizzato i risultati clinici di 142 pazienti con cancro della laringe in stadio pT2-pT4a sottoposti a STPL. A cinque anni i tassi di sopravvivenza globale (OS), di sopravvivenza malattia specifica (DSS), di sopravvivenza libera da malattia (DFS) e di controllo loco-regionale (LRC) sono risultati rispettivamente: pT2 glottici [71,4%, 95,2%, 76,0%, 76,0%] , pT3 glottici-transglottici [85,3%, 91,1%, 86,4%, 88,7%], e pT4a [73,2%, 88,1%, 52,7%, 60,7%]. La DFS ed il LRC a 5 anni sono risultati fortemente influenzati dallo stadio pT4a. A cinque anni i tassi di conservazione della funzione laringea (LFP) e la sopravvivenza libera da laringectomia (LFS) sono risultati: pT2 glottici [90,9%, 95,2%], pT3 glottici-transglottici [84,4%, 93,1%] e pT4a [63,7%, 75,5%], risultando negativamente influenzati dal pT staging e dall'età di 65 ≥ anni (LFP 54,1%). A seguito di laringectomia parziale sopratracheale le sedi tipiche di recidiva sono risultate all'interno della laringe la mucosa al passaggio fra laringe residua e trachea , la mucosa a livello della commissura posteriore, l'unità cricoaritenoidea controlaterale e all'esterno la superficie esterna della laringe residua. Per i casi di tumore glottico con estensione subglottica o di tumore con importante estensione transglottica, la scelta di una STPL può essere considerata efficace, non solo in termini prognostici, ma anche in termini di risultati funzionali.

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          Induction chemotherapy plus radiation compared with surgery plus radiation in patients with advanced laryngeal cancer. The Department of Veterans Affairs Laryngeal Cancer Study Group.

          We performed a prospective, randomized study in patients with previously untreated advanced (Stage III or IV) laryngeal squamous carcinoma to compare the results of induction chemotherapy followed by definitive radiation therapy with those of conventional laryngectomy and postoperative radiation. Three hundred thirty-two patients were randomly assigned to receive either three cycles of chemotherapy (cisplatin and fluorouracil) and radiation therapy or surgery and radiation therapy. The clinical tumor response was assessed after two cycles of chemotherapy, and patients with a response received a third cycle followed by definitive radiation therapy (6600 to 7600 cGy). Patients in whom ther was no tumor response or who had locally recurrent cancers after chemotherapy and radiation therapy underwent salvage laryngectomy. After two cycles of chemotherapy, the clinical tumor response was complete in 31 percent of the patients and partial in 54 percent. After a median follow-up of 33 months, the estimated 2-year survival was 68 percent (95 percent confidence interval, 60 to 76 percent) for both treatment groups (P = 0.9846). Patterns of recurrence differed significantly between the two groups, with more local recurrences (P = 0.0005) and fewer distant metastases (P = 0.016) in the chemotherapy group than in the surgery group. A total of 59 patients in the chemotherapy group (36 percent) required total laryngectomy. The larynx was preserved in 64 percent of the patients overall and 64 percent of the patients who were alive and free of disease. These preliminary results suggest a new role for chemotherapy in patients with advanced laryngeal cancer and indicate that a treatment strategy involving induction chemotherapy and definitive radiation therapy can be effective in preserving the larynx in a high percentage of patients, without compromising overall survival.
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            Long-term results of RTOG 91-11: a comparison of three nonsurgical treatment strategies to preserve the larynx in patients with locally advanced larynx cancer.

            To report the long-term results of the Intergroup Radiation Therapy Oncology Group 91-11 study evaluating the contribution of chemotherapy added to radiation therapy (RT) for larynx preservation. Patients with stage III or IV glottic or supraglottic squamous cell cancer were randomly assigned to induction cisplatin/fluorouracil (PF) followed by RT (control arm), concomitant cisplatin/RT, or RT alone. The composite end point of laryngectomy-free survival (LFS) was the primary end point. Five hundred twenty patients were analyzed. Median follow-up for surviving patients is 10.8 years. Both chemotherapy regimens significantly improved LFS compared with RT alone (induction chemotherapy v RT alone: hazard ratio [HR], 0.75; 95% CI, 0.59 to 0.95; P = .02; concomitant chemotherapy v RT alone: HR, 0.78; 95% CI, 0.78 to 0.98; P = .03). Overall survival did not differ significantly, although there was a possibility of worse outcome with concomitant relative to induction chemotherapy (HR, 1.25; 95% CI, 0.98 to 1.61; P = .08). Concomitant cisplatin/RT significantly improved the larynx preservation rate over induction PF followed by RT (HR, 0.58; 95% CI, 0.37 to 0.89; P = .0050) and over RT alone (P < .001), whereas induction PF followed by RT was not better than treatment with RT alone (HR, 1.26; 95% CI, 0.88 to 1.82; P = .35). No difference in late effects was detected, but deaths not attributed to larynx cancer or treatment were higher with concomitant chemotherapy (30.8% v 20.8% with induction chemotherapy and 16.9% with RT alone). These 10-year results show that induction PF followed by RT and concomitant cisplatin/RT show similar efficacy for the composite end point of LFS. Locoregional control and larynx preservation were significantly improved with concomitant cisplatin/RT compared with the induction arm or RT alone. New strategies that improve organ preservation and function with less morbidity are needed.
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              Neck dissection classification update: revisions proposed by the American Head and Neck Society and the American Academy of Otolaryngology-Head and Neck Surgery.

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                Author and article information

                Journal
                Acta Otorhinolaryngol Ital
                Acta Otorhinolaryngol Ital
                Pacini
                Acta Otorhinolaryngologica Italica
                Pacini Editore SpA
                0392-100X
                1827-675X
                June 2015
                : 35
                : 3
                : 146-156
                Affiliations
                [1 ] Otolaryngology Service, Oncology Department, "San Luigi Gonzaga" Hospital, University of Turin, Italy;
                [2 ] Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, University of Milan, Italy;
                [3 ] Otolaryngology Service, Head and Neck Department, Policlinico Hospital, University of Modena, Italy;
                [4 ] Radiology Service, Mauriziano Hospital, Turin, Italy;
                [5 ] Otolaryngology Service, Martini Hospital, Turin, Italy;
                [6 ] Otolaryngology Service, Vittorio Veneto Hospital, Treviso, Italy;
                [7 ] Department of Clinical and Biological Sciences, University of Turin, Italy;
                [8 ] Pathology Service, Oncology Department "San Luigi Gonzaga" Hospital, University of Turin, Italy
                Author notes
                Address for correspondence: Erika Crosetti, ENT Department, Martini Hospital, via Tofane 71, 10141 Turin, Italy. Tel. +39 11 70952305. Fax +39 11 70952252. E-mail: erikacro73@ 123456yahoo.com
                Article
                Pacini
                4510940
                26246658
                a638ff29-255a-422a-b018-b106268daf07
                © Copyright by Società Italiana di Otorinolaringologia e Chirurgia Cervico-Facciale

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives License, which permits for noncommercial use, distribution, and reproduction in any digital medium, provided the original work is properly cited and is not altered in any way. For details, please refer to http://creativecommons.org/licenses/by-nc-nd/3.0/

                History
                : 03 March 2015
                : 16 March 2015
                Categories
                Head and Neck

                Otolaryngology
                laryngectomy,laryngeal cancer,contraindications
                Otolaryngology
                laryngectomy, laryngeal cancer, contraindications

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