Well-differentiated thyroid cancer with aerodigestive tract invasion: Long-term control and functional outcomes

Background. Well-differentiated thyroid cancer (WDTC) invading the aerodigestive tract is an uncommon entity associated with significant morbidity and reduced survival. Methods. We reviewed the surgical treatment, oncologic control, and functional outcomes of 69 consecutive patients with WDTC invading the upper aerodigestive tract. Results. Complete tumor excision with negative margins was achieved in 62% of patients. Tracheostomy dependence (27%) and permanent hypoparathyroidism (49%) were present or the result of surgery. Seventy-one percent of patients ate a regular diet, 59% had normal speech, and the majority (62%) reported normal activities of daily living. The local, regional, and distant recurrence was 1%, 14%, and 23%, respectively. The 5-year overall survival (OS) and disease-free survival (DFS) was 71% and 45%, respectively. Conclusion. Surgical resection and appropriate adjuvant treatment can achieve excellent locoregional control while preserving function and quality of life. Long-term survival is limited by the high incidence of distant metastasis. (C) 2015 Wiley Periodicals, Inc.