41,42 Thus it is clear that the major advantages of radiotherapy or chemoradiotherapy for treatment of advanced laryngeal cancer are avoidance of an operation and GDC-0973 solubility dmso anatomic preservation of the larynx, with no definite compromise in overall survival.14,43,44 On the other hand, the disadvantages include a high incidence of severe acute toxicity, and a high
incidence of long-term laryngeal functional problems, particularly in patients treated with concurrent chemoradiotherapy.35–38 Inhibitors,research,lifescience,medical There also appears to be a reduced likelihood of local control for patients with T4 tumors with gross cartilage destruction or extralaryngeal extension. Thus, consideration toward primary total laryngectomy should be given in these patients. Furthermore, among patients who develop local recurrence and require salvage laryngectomy, Inhibitors,research,lifescience,medical there is an increased incidence of pharyngocutaneous fistula and major complications in the post-radiotherapy setting.45 At most institutions, radiotherapy or chemoradiotherapy is the treatment of choice for most T3 laryngeal cancers. The decision to enhance the radiotherapy with chemotherapy will depend mainly on the patient’s Inhibitors,research,lifescience,medical general condition, medical co-morbidity, and ability to tolerate chemotherapy. Frail patients or patients with medical co-morbidity are best treated by radiotherapy alone; the possible benefit in local control by adding chemotherapy in such patients may be more than
offset Inhibitors,research,lifescience,medical by the increased risk of local recurrence due to breaks in treatment caused by acute toxicity. For patients aged >70 years, the addition of chemotherapy has not been shown to offer any benefit over radiotherapy alone, while functional outcomes have been reported to be even worse. Another
consideration may be whether there is likely to be a conservation surgical option in the event of treatment failure. Whereas conservation laryngeal surgery may be an option in some highly selected patients with recurrent laryngeal cancer after radiotherapy, Inhibitors,research,lifescience,medical this will almost never be feasible in the post-chemoradiotherapy setting due to the very high risk of breakdown. Primary Total Laryngectomy Total laryngectomy Chlormezanone remains the gold standard treatment for locally advanced T4 laryngeal cancers with gross cartilage destruction or extralaryngeal extension, as well as for treatment of locally recurrent laryngeal cancers after primary non-surgical treatment. The rationale for primary total laryngectomy in advanced T4 cases is the decreased likelihood of complete response with radiotherapy or chemoradiotherapy;46 the lack of evidence regarding non-surgical management of such cases, as large volume T4 cases were excluded from many of the organ preservation studies;16 the reduced success rate of salvage laryngectomy in the setting of extralaryngeal disease; and the increased incidence of major complications after salvage laryngectomy.