Inflammatory Pseudotumor of the Extraorbital Head and Neck: CT and MR Imaging Findings.
10.3348/jkrs.2002.46.5.441
- Author:
Eun Jin RHO
1
;
Jae Wook RYOOG
;
Dong Gyu NA
;
Sam Soo KIM
;
Heon HAN
;
Choon Hwan HAN
;
Ski Kyung LEE
Author Information
1. Department of Radiology, Kangnam General Hospital Public Corporation.
- Publication Type:Original Article
- Keywords:
Head and neck neoplasms, CT;
Head and neck neoplasms, MR
- MeSH:
Cavernous Sinus;
Follow-Up Studies;
Granuloma, Plasma Cell*;
Head*;
Humans;
Lymphatic Diseases;
Magnetic Resonance Imaging*;
Mouth;
Nasopharynx;
Neck*;
Orbit
- From:Journal of the Korean Radiological Society
2002;46(5):441-448
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To determine the MR and CT imaging findings of inflammatory pseudotumor of the extraorbital head and neck. MATERIALS AND METHODS: We reviewed the MR (n=10) and CT (n=9) imaging studies of 11 patients with this condition (M:F=5:6, age range: 35-75 years), analysing each case in terms of location, occupying space, signal intensity, intracranial involvement, degree of contrast enhancement and adjacent bone change. Follow-up images were obtained in nine cases, and the response of each patient to steroid treatment was reviewed. RESULTS: Lesions involved the masticator space (n=8), the buccal space (n=6), the nasopharynx (n=5), the paranasal sinus (n=4), the parapharyngeal space (n=3), the prevertebral space (n=2), the orbit (n=2), the carotid space (n=2), the paravertebral space (n=1), parotid space (n=1), and the oral cavity (n=1). In ten of eleven cases, there was adjacent bone change. In three cases, the cavernous sinus was involved, and in two, the dura. One case involved both of them. At T2-weighted imaging, the lesions showed hypointensity in nine of ten cases; in four of nine, signal intensity was markedly low, and in no case was it diffusely high. In five of nine cases, the mass decreased in size after steroid therapy. CONCLUSION: Inflammatory pseudotumor showed iso-to hypointensity at T2-weighted imaging. Lymphadenopathy was not apparent.
