Computed tomographic patterns of orbital cellulitis due to sinusitis

Arquivos Brasileiros de Oftalmologia

Filipe José Pereira¹  Antonio Augusto Velasco E Cruz²  Wilma Teresinha Anselmo-lima²  Jorge Elias Júnior² 

[1] ,São Paulo UniversityRibeirão Preto SP ,Brazil

关键词: Cellulitis;    Sinusitis;    Orbit;    Abscess;    Computed tomography;    x-ray computed;    Celulite;    Sinusite;    Órbita;    Abscesso;    Tomografia computadorizada por raio-x;   

DOI  :  10.1590/S0004-27492006000400011

来源: SciELO

【 摘 要 】

PURPOSE: To describe the CT findings of orbital cellulitis due to sinusitis. METHODS: The records and CT scans of 45 consecutive patients with orbital cellulitis due to sinusitis treated at the Hospital of the Medical School of Ribeirão Preto were analyzed by a radiologist and two orbital surgeons. RESULTS: Three major types of CT changes were observed: diffuse fat infiltration, subperiosteal abscess and orbital abscess. Diffuse fat infiltration (characterized by an increased density of the extra- or intraconal fat) was seen in 11 patients (24.44%). A subperiosteal abscess was diagnosed in 28 patients (62.23%). A surgically proved orbital abscess was detected in 6 patients (13.33%). CONCLUSIONS: In all cases of orbital cellulitis due to sinusitis intraorbital changes can be detected by CT scans either as a diffuse infiltration of the orbital fat or as a detachment of the periorbita (subperiosteal abscess) or a true orbital abscess. Category I of Chandler orbital cellulitis classification (inflammatory edema) must be understood as a stage of a process that is already happening within the orbit and, as the term "preseptal cellulitis" means a palpebral infection, this designation should not be used to stage orbital cellulitis.

【 授权许可】

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