喉癌(Laryngeal Carcinoma)

喉腔   2009-04-25

   

CT扫描显示声门下癌沿着环状软骨分布,CT scan shows a subglottic cancer along the cricoid cartilage.

CT扫描显示肿瘤侵犯右侧声带,CT scan shows tumoral involvement of the right vocal cord.

 

侧位平片显示喉部正常结构:a, vallecula; b, 舌骨; c, 会厌; d, 会厌软骨前间隙; e, 喉室; f, ,杓状软骨; g, 环状软骨;  h, 甲状软骨.Lateral radiograph of the neck showing the different structures of the larynx: a, vallecula; b, hyoid bone; c, epiglottis; d, pre-epiglottic space; e, ventricle (air-space between false and true cords); f, arytenoid; g, cricoid; and h, thyroid cartilage.

    Laryngeal cancer is the most common cancer of the upper aerodigestive tract. The incidence of laryngeal tumors is closely correlated with smoking, as head and neck tumors occur 6 times more often among cigarette smokers than among nonsmokers. The age-standardized risk of mortality from laryngeal cancer appears to have a linear relationship with increasing cigarette consumption.

[影像学表现] 

    1.X线平片(颈侧位):声带:喉室增厚成结节状,喉室可闭塞。
    2.CT表现:声带软组织结节状占位,可向前连合、声门下蔓延,喉旁间隙、会厌前间隙可受侵犯,脂肪密度消失,代以软组织密度,甲状软骨、杓状软骨可有破坏。未钙化的喉软骨破坏情况显示困难。
    3.MRI表现:矢状像可显示肿瘤声门下蔓延的范围。真声带周围脂肪信号消失,但粘膜多正常。肿瘤向后侵犯可有环状软骨上或杓状软骨内软组织增厚。喉软骨受侵犯时T1权重像显示为正常时低信号的钙化或高信号的骨髓结构缺损。

(参考来源:,影像园,作者:admin)
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