FDG PET/BT’DE ARTMIŞ FDG TUTULUMU GÖSTEREN NADİR BİR ALT EKSTREMİTE YUMUŞAK DOKU SARKOMU: MİKSOİD LİPOSARKOM OLGUSU

Abstract

Sağ uyluk posteriorunda miksoid liposarkom tanılı 45 yaşında erkek olgunun evreleme amaçlı [18F]-2-floro-2-deoksi-D-glukoz (FDG) pozitron emisyon tomografisi (PET)/bilgisayarlı tomografi (BT)  görüntülemesi yapılmıştır. Olgunun sağ uyluk orta ve distal 1/3 kesimi posteriorunda yaklaşık 105x92 mm boyutlarda, lobüle konturlu, komşu adale yapılarını iten, BT’de septalarla ayrılmış miksoid-kistik ve yağ bileşenleri içeren, füzyon görüntülerde ise heterojen artmış FDG tutulumu gösteren (SUVmaks: 3.35) yumuşak doku kitlesi saptanmıştır. Diğer FDG PET/BT kesitlerinde metastaz tespit edilememiş olup, görüntüleme sonrasında kitle total olarak çıkarılmıştır. FDG PET/BT yumuşak doku sarkomlarında grade belirlemede kullanılmakta olup, biyopsinin nereden alınacağının saptanmasında da önemli rol oynamaktadır. FDG PET/BT, alt ekstremitesinde miksoid liposarkom kitlesi bulunan olgumuzun evrelemesinde, metastaz değerlendirmesine katkı sağladığı için yararlı bulunmuştur.

Keywords

• Fluorodeoksiglukoz F18,pozitron-emisyon tomografi/bilgisayarlı tomografi,sarkom,uyluk

A RARE LOWER EXTREMITY SOFT TISSUE SARCOMA WITH INCREASED FDG UPTAKE ON FDG PET/CT: A CASE OF MYXOID LIPOSARCOMA

Abstract

Abstract

A 45 years old man with the diagnosis of myxoid liposarcoma in posterior part of his right thigh underwent [18F]-2-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET)/computed tomography (CT) for staging purpose. In posterior of the middle and distal 1/3 parts of the right femur, a soft tissue mass measuring 105x92 mm with lobulated contours pushing neighboring muscles was detected which included septated myxoid-cystic and fat components on CT images and showed heterogeneously increased FDG uptake (SUVmax: 3.35) on FDG-PET/CT fusion images. No evidence of metastasis could be detected on other FDG PET/CT images and the tumor was removed totally after imaging. FDG PET/CT is being used for grading purpose in soft tissue sarcomas and plays important role in determining the site for biopsy. FDG PET/CT was found to be useful in staging of our case with myxoid liposarcoma because of its contribution to metastasis evaluation.

Keywords

• Fluorodeoxyglucose F18,positron-emission tomography/computed tomography,sarcoma,thigh

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