The hypopharynx includes the left and right piriform sinuses, which expand around the sides of the larynx and lie between the larynx and the thyroid cartilage; the lateral and posterior hypopharyngeal walls; and the postcricoid region extending from the level of the arytenoid cartilages to the inferior border of the cricoid cartilage
Tube thoracostomy placement was successfully achieved from the right side, and neck exploration was performed for tracheostomy in operating theater; a total tracheal rupture was observed between the level of 2 and 3 cricoid cartilage
and the procedure was terminated after placing a tracheostomy cannula to the distal segment of trachea to wait for considering reconstruction following clinical progression and hemodynamic stabilization of the patient.
Application of CP may cause laryngeal obstruction due to cricoid cartilage
deformation or tilting resulting in a vocal cord closure (13).
The trachea begins at the cricoid cartilage
and ends at the level of sternal angle by dividing into the right and left principal bronchi.
A normal-appearing cricoarytenoid joint was defined as one with a clearly visible soft-tissue plane between the articular surface of the cricoid cartilage
and the surface of the arytenoid cartilage on two or more orthogonal planes, with homogeneous density of the cartilage (figure 1).
After the arytenoid cartilage was separated from the cricoid cartilage
in the left side, the exoeSL procedure with lower needle at lower edge of thyroid lamina 20 mm from the posterior edge of the thyroid lamina and upper needle at 22 mm from the posterior edge produced a sufficient glottic gap [Figure 3]B.
 showed that the phrenic nerve and C5 nerve root are within 2 mm of each other at the level of the cricoid cartilage
(also referred to C6 level).
Of these, the cricopharyngeus is attached to the posterior aspect of the cricoid cartilage
and is more functionally significant during swallowing compared to other muscles (1,2).
A case of metastatic carcinoma in the cricoid cartilage
and oral cavity is reported, which can be considered as case number 15 in the clinical literature and the first reported case in Mexico.
First, the pathologies related to intubation may involve the laryngoscope inflicting direct pressure on the hypoglossal nerve -which runs superficially- while moving the tongue forward, or inducing tension in the hypoglossal nerve when moving the head back for intubation.3 Second, compression on the cricoid cartilage
during intubation will anatomically fix the superficially distributed hypoglossal nerve at the mandible angle, and if the intubation is performed in this condition, the nerve may be hyperextended.4
The trachea and cricoid cartilage
were dissected from the soft tissues surrounding them, while protecting the recurrent nerve.
During surgery, a transversal fracture of thyroid and cricoid cartilage
In supracricoid laryngectomy (SCPL) for transglottic tumors with glottic and supraglottic involvement and minimal extension to the infraglottis, the hyoid bone, the cricoid cartilage
, and at least one arytenoid are preserved, thus maintaining the possibility of functional reconstruction.
The asymmetry index of the cricoid cartilage
and the external angle of the thyroid cartilage.
Laryngotracheal separation often occurs at the level of the cricoid cartilage
, as the airway is comparatively immobile at this location.