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Objectives/hypothesis: To describe the controversies in the management of thyroid carcinoma invading the airway., Study Design: Contemporary review of literature; level of evidence: 5., Results: Invasion of the larynx or trachea by thyroid carcinoma is uncommon and often identified at the time of operation, when the surgeon must decide the extent of resection. Invasion of the airway is associated with loss of tumor differentiation and a reduction in long-term survival compared to tumors limited to the thyroid gland. Whether or not the invaded airway should be resected remains controversial. Tangential shave excision of tumor is commonly performed, despite a marked risk of local recurrence. Circumferential sleeve resection of the larynx and trachea is safe and lowers the risk of local recurrence. In recurrent disease, laryngotracheal resection provides effective palliation of airway obstruction and hemoptysis., Conclusions: Long-term (>10-20 years) prospective studies are required to compare the outcome after shave excision with segmental airway resection for thyroid carcinoma. Based on the current literature and on our experience, we advocate circumferential tracheal resection in the setting of airway involvement.

Conclusions: Selecting patients that are candidates for surgical treatment is important in the work-up of patients with tracheal cancer. Toward this goal, centralization of care concerning tracheal tumors is advised. Centralization may increase long-term survival and decrease operative morbidity and mortality even further. Objective: Primary tracheal tumors pose a diagnostic and therapeutic challenge for the physician when confronted with this mostly malignant tumor. Diagnosis is often delayed for months or years due to its aspecific and asthma-mimicking symptoms. Knowledge from retrospective series is limited and few clinicians have gained experience with this tumor. The available literature on the diagnosis and management of this group of tumors is reviewed to summarize the available knowledge about these uncommon tumors. New diagnostic, staging, and treatment guidelines are proposed. Methods: PubMed was searched for English publications from 1960. The available literature was reviewed and summarized. Results: Surgical resection and primary reconstruction is the best curative treatment modality available at present. In centers of experience, more than half of all patients with tracheal cancer may be candidates for surgical resection, although in population-based studies this treatment is applied in only 10–25% of patients. [ABSTRACT FROM AUTHOR]

Abstract: Objective: We investigate the influence of tumour and resection characteristics on survival in adenoid cystic carcinoma (ACC) of the trachea. Methods: A retrospective study of 12 laryngotracheal, 58 tracheal and 38 carinal resections for primary ACC in 108 consecutive operative survivors between 1962 and 2007 was conducted. Postoperative radiotherapy was administered to 82% of patients (89/108). Depth of invasion, extramural extent, organ invasion, perineural growth, margin status and lymph node involvement were described. Results: The tumour was intramural in 15% (16/108), extramural in 85% (92/108) and invaded adjacent organs in 20% (22/108). Airway margins were grossly positive in 9 (8%), microscopically positive in 59 (55%) and negative in 40 (37%) of 108 resections. Adventitial (radial) margins of transmural sections were grossly positive in 3 (3%), microscopically positive in 95 (88%) and negative in 10 (9%) cases. Perineural growth was present in 37 (34%) and absent in 12 (11%); it was not observed in 59 (55%) cases. Lymph nodes were positive in 16 (15%) and negative in 45 (42%) cases; it was not sampled in 47 (44%) cases. Median overall survival (OS) and disease-free survival (DFS) for the entire group were 17.7 and 10.2 years, respectively. OS was longer after resection with: negative airway margins (20.4 vs 13.3 years, P =0.028) and negative radial margins (21.7 vs 13.3 years, P =0.050); absence of extramural disease (21.7 vs 13.3 years, P =0.007), perineural growth (22.8 vs 7.5 years, P =0.011) or lymph node metastases (16.8 vs 6.1 years, P =0.017). DFS was longer after resection with: negative airway margins (16.6 vs 9.3, P =0.005) and absence of extramural disease (17.9 vs 9.3 years, P =0.008), perineural growth (17.9 vs 6.6 years, P =0.033) or lymph node metastases (10.2 vs 3.0 years, P =0.005). Conclusions: After tracheal resection for ACC, limited tumour extent and complete resection are associated with longer overall and disease-free survival. Long-term survival (>10 years), however, is also observed after tracheal resection of locally advanced ACC. [Copyright &y& Elsevier]

The evidence for the treatment of tracheal tumors rests on a small number of single-institution series, national surveys, and epidemiologic studies. From this evidence, the following observations have been made: tracheal tumors are rare and must be identified among a much larger number of metastatic malignant tracheal lesions; most tracheal tumors are malignant; most tracheal tumors in selected series are resectable; and survival after resection exceeds survival after nonoperative treatment, even if resection margins are close. A discussion of evaluation and treatment of these tumors in this review proceeds along a systematic series of questions. [Copyright &y& Elsevier]