Primary laryngotracheal melanoma

Tracheostomy and venovenous extracorporeal membrane oxygenation for difficult airway patient with carinal melanoma: A case report and literature review

BACKGROUND

Anesthesia for tracheal tumor resection is challenging, particularly in patients with a difficult upper airway. We report a case of a difficult upper airway with a metastatic tracheal tumor causing near-total left bronchial obstruction and requiring emergency tracheostomy and venovenous extracorporeal membrane oxygenation (VV-ECMO) support for rigid bronchoscopy-assisted tumor resection.

CASE SUMMARY

A 41-year-old man with a history of right retromolar melanoma treated by tumor excision and myocutaneous flap reconstruction developed progressive dyspnea on exertion and syncope episodes. Chest computed tomography revealed a 3.0-cm tracheal mass at the carinal level, causing 90% tracheal lumen obstruction. Flexible bronchoscopy revealed a pigmented tracheal mass at the carinal level causing critical carinal obstruction. Because of aggravated symptoms, emergency rigid bronchoscopy for tumor resection and tracheal stenting were planned with standby VV-ECMO. Due to limited mouth opening, tracheostomy was necessary for rigid bronchoscopy access. While transferring the patient to the operating table, sudden desaturation occurred and awake fiberoptic nasotracheal intubation was performed for ventilation support. Femoral and internal jugular vein were catheterized to facilitate possible VV-ECMO deployment. During tracheostomy, progressive desaturation developed and VV-ECMO was instituted immediately. After tumor resection and tracheal stenting, VV-ECMO was weaned smoothly, and the patient was sent for intensive postoperative care. Two days later, he was transferred to the ward for palliative immunotherapy and subsequently discharged uneventfully.

CONCLUSION

In a difficult airway patient with severe airway obstruction, emergency tracheostomy for rigid bronchoscopy access and standby VV-ECMO can be life-saving, and ECMO can be weaned smoothly after tumor excision. During anesthesia for patients with tracheal tumors causing critical airway obstruction, spontaneous ventilation should be maintained at least initially, and ECMO deployment should be prepared for high-risk patients, such as those with obstructive symptoms, obstructed tracheal lumen > 50%, or distal trachea location.

Primary mucosal melanoma of the larynx: systematic review of the literature and qualitative synthesis

PURPOSE

Primary mucosal melanoma of the larynx (PLM) is a rare entity among head and neck cancers. Due to its rarity, clear protocols of management are not available. A deeper knowledge of the clinical and biological behaviour of PLM is strongly needed.

METHODS

According to PRISMA process, we searched through electronic databases case reports, case series and review articles providing relevant clinical data. The survival analysis was performed with Kaplan-Meier survival curves, using disease free survival (DFS) and overall survival (OS) as endpoints.

RESULTS

1074 articles were initially screened, of which 37 studies describing 44 PLM cases were selected and included in the analysis. Mean age was 59.7 years with a mean follow-up time of 25.4 months. The most common symptom at presentation was hoarseness (52%), while the most involved laryngeal subsite was supraglottic region (62%). Most patients presented with an advanced stage. Tumour (T) and node (N) status at presentation did not influence OS nor DFS, whereas distant metastases (M) status resulted significantly associated with the reduction of OS and DFS time (Mantel-Cox: p < 0.0001 and p = 0.001, respectively). The laryngeal subsite and the type of surgery performed did not significantly impact on OS and DFS.

CONCLUSIONS

Treatment for PLM remains debated. Surgery with safe margins is recommended due to the high rates of local recurrence. Systemic therapy is advised for metastatic disease. However, the prognosis remains poor even after radical resection or targeted therapy.