Sinonazal Malign Fibröz Histiositom’un MR Bulguları+

Malign fibroz histiositom eriskinlerde en sik gorulen malign yumusak doku tumoru olmasina ragmen bas- boyun bolgesi nadir yerlesim yerlerinden biridir. Bu calismada sinonazal yerlesimli massif malign fibroz histiositom olgusunda manyetik rezonans (MR) goruntuleme (bulgularinin sunulmasi amaclanmaktadir. Yuz orta hattinda kitle, giderek artan burun tikanikligi, burun kanamasi ve anosmi semptomlari olan 59 yasinda erkek hasta konvansiyonel MR ile incelendi. MR'da burun, bilateral nazal kavite, anterior etmoid ve frontal sinusleri dolduran ve sag maksiller sinuse de uzanan orta hat yerlesimli, yaklasik 65x80x95mm boyutlu solid tumoral kitle lezyonu izlendi. T1 A goruntulerde dusuk ve T2 A goruntulerde yuksek sinyalli olan kitle yogun heterojen kontrast tutmaktaydi. Sag orbita ust medial duvarinda ve frontal kemik bazalinde defekt izlenmekte olup, kitle kismen orbita ve anterior kranial fossa icerisine uzanmaktaydi. Sinonazal yerlesimli malign fibroz nadir gorulmekle birlikte, bu lokalizasyondaki tumorlerin ayirici tanisinda akilda tutulmalidir. Lokal nuks orani yuksek olan malign fibroz histiositomda tedavi oncesi cevre dokulara invazyonun degerlendirilmesi onemlidir. MR inceleme bu kitlenin cevre dokulara yayiliminin belirlenmesinde degerlidir. Anahtar Kelimeler: Malign fibroz histiyositom, sinonazal, MRG Sinonasal Malignant Fibrous Histiocytoma Although malignant fibrous histiocytoma is one of the most commonly encountered malignant soft tissue tumor, head and neck presentation is extremely rare. The aim of this article is to present the results of magnetic resonance imaging (MRI) of a case with sinonasal malignant fibrous histiocytoma. A 59 years old male patient was referred to a tertiary medical center with a mass in the midface, nasal obstruction, epistaxis and anosmia. In MRI assesment, the involvement of the nose, bilateral nasal cavities, anterior ethmoids, both frontal sinuses and right maxillary sinus was observed. The mass having decreased signal intensity in T1W images and increased signal intensity in T2W was also showing an apparent heterogenous contrast enhancement. In MRI sections, the invasion into the superior orbit and anterior cranial fossae was determined. Though it is rare, the malignant fibrous histiocytoma should be remembered in the differential diagnosis of sinonasal masses. MRI assesment is valuable in the detection of the involvement of the surrounding tissues.