The Use of CT in the Diagnosis and Differential Diagnosis of Orbital Masses

Yıl 2018, Cilt: 51 Sayı: 1, 40 - 46, 30.03.2018

Dilek Gökharman Sonay Aydın , Pınar Nercis Koşar

Öz

Abstract: This study include spatients with the pre-diagnosis of orbital
space-occupying tumor or tumor-like lesions examined on CT in Ankara Training
and Research Hospital Radiology Department. Thyroid ophthalmopathy cases were
not included in the study.

CT criteria specific to orbital mass lesions and the diagnostic value of
CT were investigated through comparison of the CT findings with the histopathological
results. Of a total of 40 patients, 22 (55 %) were diagnosed with primary
tumors, 6 (12.5 %) with secondary
tumors and 12 (32.5 %) with tumor-like lesions.

 CT is highly
sensitive in the definition of intra-tumoral calcifications, and sclerotic and
destructive changes in osseous structures. The location and local invasion of
intraorbital space-occupying lesions can be clearly differentiated on CT. Diagnosis
of intraocular lesions can be made specifically, correlating CT findings with
orbital ultrasound results. The differential diagnosis of benign and malignant
tumoral lesions from inflammatory and vascular lesions can be made using CT.

In some cases where no specific diagnosis can be made,
CT directs the therapy by identifying the outlines and morphological
characteristics of the lesion. The diagnostic specificity of CT will surely
increase in the light of anamnesis, physical examination findings and other
radiological modalities.

Anahtar Kelimeler

Orbita, Mass, CT

Orbita Kitlelerinin Tanı ve Ayırıcı Tanısında BTnin Kullanımı

Öz

Özet:

Ankara Hastanesi Radyoloji Bölümünde  orbitada yer kaplayan tümör veya tümör benzeri lezyon ön tanısı ile BT tetkiki yapılan ve  aynı neden­lerle  opere edilmiş olguların BT bulguları incelenerek, tiroid oftalmopati dışında 40 olgu çalışma kapsamına alındı.

Histopatolojik sonuçlarla, BT bulgulan karşılaştınlarak orbital kit­lelere spesifik BT kriterleri ve BT'nin tanı değeri araştınldı. 40 olgunun 22'si primer tümör (%55), 6'sı sekonder tümör (%12.5), 12'si (%32.5) tümör benzeri lezyondu. Sonuç olarak;

-       BT, intratümoral kalsifikasyonlann, kemik yapılardaki sklerotik ve destrüktif değişikliklerin saptanmasında çok duyarlıdır.

-       BT ile intraorbital yer kaplayan lezyonlann lokalizasyonu ve çev­re dokulara yayılımı net olarak belirlenebilmektedir.

-       İntraoküler lezyonlar, USG ile korrele edildiğinde spesifik tanılara ulaşılabilmektedir.

-       Orbital BT ile benign ve malign tümoral lezyonlar ile inflamatuar ve vasküler lezyonlann ayıncı tanısı yapılabilmekte, spesifik tanıya gidi­lemeyen olgularda, BT lezyonun sınırlarını ve morfolojik özelliklerini belirleyerek tedaviyi yönlendirmektedir.

BT ile spesifik tanı konabilme oranı; BT bulgularının anamnez, fi­zik muayene ve diğer radyolojik görüntüleme yöntemlerinin sonuçlarıyla beraber değerlendirildiği ölçüde artış gösterecektir

Anahtar Kelimeler

Orbita, Kitle, BT

Kaynakça

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