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  • 精確檢索 : 冠狀病毒
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摘要

為了解上顴骨咀嚼區於電腦斷層或磁振造影上表現之病灶，我們蒐集四十五位有上顴骨咀嚼區病灶之病例，２６例是血腫，１６例是腫瘤，３例是膿瘍。吾人對這些病灶位於上顴骨咀嚼區及鄰近結構的侵犯部位加以分析。大部分血腫發現於上顴骨咀嚼區深層鬆弛結締組織，佔80.8%，其次是淺層緊密結締組織，佔61.5%。只有２例血腫位於淺層脂肪墊區。５例病患有氣泡堆積於上顴骨咀嚼區，且皆位於深層脂肪墊區，並都合併上頷竇骨折。在１６例腫瘤病患中，大部分由鄰近結構腫瘤侵犯而來，只有４例病患是原發性腫瘤。最常發生上顴骨咀嚼區腫瘤的區域是顳肌（１６例中有１５例）及深層脂肪墊區（１６例中有８例）。上顴骨咀嚼區的結締組織是顏面部及頭部之感染、血腫、及腫瘤的表淺擴散連結路徑,而深層脂肪墊區及顳肌亦是顏面部、顱內及眼窩之病灶的擴散連結路徑，原發性下顳窩及上顴骨咀嚼區腫瘤非常少見，惡性上顴骨咀嚼區腫瘤通常來自於附近空間。

關鍵字

無資料

並列摘要

In order to understand lesions involving the suprazygomatic masticator space (SZMS) demonstrated on computered tomography (CT) or magnetic resonance (MR) images, we collected 45 cases of lesions in SZMS. There were hematomas in 26 cases, tumors in 16 cases, and abscesses in 3 cases. The location of these lesions in compartments of the SZMS and adjacent structures was analyzed. Most commonly hematoma was found in the deep loose connective tissue (80.8%), followed by the superficial dense connective tissue (61.5%). Only 2 SZMS hematoma involved the superficial fat pad. Five patients had air accumulation in the SZMS, and all were in the deep fat pad and with maxillary sinus fracture. Of the sixteen cases which were tumors, 12 were extended from adjacent structures, and four were primary tumor. In cases of tumor, compartments of SZMS involved most frequently were temporal muscles (15 of 16 cases), followed by deep fat pad (8 of 16cases). The connective tissue layer of SZMS is a communication pathway for superficial spread of infection, hematoma, or tumor invasion to or from the scalp and face. Compartments of deep fat pad and temporal muscle are also pathways for the spread of disease to or from the face, intracranium and orbit. The primary tumors in infratemporal fossa and SZMS are rare. Malignant tumors in SZMS usually come from surrounding spaces.

並列關鍵字

SZMS ； infratemporal fossa ； CT ； MR

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