title: Emergency Cricothyroidotomy for Difficult Airway Management After Asynchronous Bilateral Neck Dissections: A Case Report and Literature Review.
abstract: OBJECTIVE
  This report describes a case that required emergency cricothyroidotomy for an upper airway obstruction owing to laryngeal edema after asynchronous bilateral neck dissections.
  
  
  METHODS
  A 57-year-old man was diagnosed with multicentric squamous cell carcinoma of the tongue (T1 and 2N0M0), and partial glossectomy with primary closure was performed. Three months after surgery, secondary metastases in the right cervical lymph nodes were detected, and a right radical neck dissection was performed. Contrast-enhanced computed tomographic (CT) scan taken 2 weeks after the right neck dissection visualized a possible third metastasis in the left cervical lymph node. Four weeks after the right radical neck dissection, left supraomohyoid neck dissection was carried out. In this surgery, the left internal jugular vein (IJV) was preserved. Nine hours after surgery, severe swelling of the face and pharynx was recognized, resulting in a stoppage of respiration and then an emergency cricothyroidotomy.
  
  
  RESULTS
  The patient's life was saved without any encephalopathy or airway trouble. Contrast-enhanced CT scan taken the next day confirmed the preserved left IJV patency.
  
  
  CONCLUSIONS
  Oral and maxillofacial surgeons should be aware of the possibility of life-threatening laryngeal edema associated with bilateral neck dissections even if the unilateral IJV is preserved and should know the procedure for emergency cricothyroidotomy.
authors.affiliation: Lecturer, Division of Maxillofacial Surgery, Department of Science of Physical Functions, Kyushu Dental University, Fukuoka, Japan. Electronic address: r12uehara@fa.kyu-dent.ac.jp.
authors.forename: Masataka
authors.initials: M
authors.lastname: Uehara
authors.affiliation: Lecturer, Division of Oral Medicine, Department of Science of Physical Functions, Kyushu Dental University, Fukuoka, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Kokuryo
authors.affiliation: Associate Professor, Division of Maxillofacial Surgery, Department of Science of Physical Functions, Kyushu Dental University, Fukuoka, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Sasaguri
authors.affiliation: Professor and Chairman, Division of Maxillofacial Surgery, Department of Science of Physical Functions, Kyushu Dental University, Fukuoka, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tominaga
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000601:surgery*; D004638:Emergency Treatment; D006801:Humans; D008297:Male; D008875:Middle Aged; D013961:Thyroid Gland / Q000601:surgery*; D014062:Tongue Neoplasms / Q000601:surgery*