側頭下窩に生じた炎症性偽腫瘍の１例

Inflammatory pseudotumor

北海道歯学会

北海道歯学雑誌

In this study we report on a case of inflammatory pseudotumor of the infratemporal fossa. A 73-year-old woman was admitted to our hospital because of trismus. CT and MR findings revealed the right infratemporal fossa mass had invaded the adjacent soft tissue. We suspected a malignant tumor of the right infratemporal fossa and performed an open biopsy under general anesthesia. Histopathological findings were we discovered fibrous scar tissue with inflammatory cell infiltrate. The patient was diagnosed with inflammatory pseudotumor in the right infratemporal fossa, and oral prednisolone was given for 6 months. The patient’s symptoms, including trisumus, improved dramatically with reduction in lesion size.