下顎埋伏智歯による傍咽頭間隙膿瘍の1例

Parapharyngeal Abscess due to an Impacted Third Molar at the Mandibular Notch

I．はじめに

　傍咽頭間隙（parapharyngeal space）は局所解剖学的に複雑であり，血管，神経が走行する重要な場所である。埋伏歯が原因で生じた傍咽頭間隙膿瘍の1例を経験したので，若干の考察を加えて報告する。

Infections of the parapharyngeal space, also known as deep neck abscesses, draw a special at-tention because of life threatening complications that may follow if treatment is delayed or inade-quate.

A 35-year-old male had experienced a swelling and spontaneous pain of the right submandibular area. X-ray examination showed an impacted third molar, and CT scan showed a low density lesion of the parapharyngeal space accompanied with deformity.

The right parapharyngeal abscess caused by an impacted third molar at the mandibular notch was diagnosed.

Intra-oral incision was made and the parapha-ryngeal space was drained under systemic admin-istration of antibiotics.

Discussion was made for anatomical, bacteri-ological, and diagnostic aspects of parapharyngeal abscess.