Nöroradyolojide ‘Bana Dokunma’ Lezyonları
Özet
Nöroradyolojide "bana dokunma lezyonları" (leave me alone / do not touch) olarak adlandırılan benign yapılar, karakteristik radyolojik bulguları sayesinde kolayca tanınabilen ve ileri tetkik ya da biyopsi gerektirmeyen oluşumlardır. Bu lezyonlar anatomik varyasyonlar, vasküler lezyonlar ve tümörler olmak üzere üç temel kategoride incelenmektedir. Anatomik varyasyonlar grubunda septum pellusidum kistleri, stabil seyirli araknoid kistler, serebelluma bası yapmayan mega sisterna magna, blake kesesi kisti, dev Pacchioni granülasyonları, pineal ve nörogilyal kistler ile genişlemiş perivasküler alanlar yer alır. Vasküler lezyonlardan gelişimsel venöz anomaliler ve kapiller telenjiektaziler tek başlarına stabil olsalar da, bir arada bulunduklarında kanama riski nedeniyle takip gerektirirler. Tümör kategorisinde ise boyut artışı göstermeyen intrakranial lipomlar ve nonagresif karakterdeki multinodüler vakualize nöronal tümörler dikkat çeker. Tüm bu benign yapıların doğru radyolojik ayıcı tanısının yapılması, hastaların gereksiz ileri tanı testlerinden ve hatalı cerrahi müdahalelerden korunması açısından kritik bir öneme sahiptir.
Benign structures referred to as "do not touch" (leave me alone) lesions in neuroradiology are easily recognizable due to their characteristic radiological features and require no further diagnostic workup or biopsy. These lesions are evaluated under three main categories: anatomical variations, vascular lesions, and tumors. The anatomical variations group includes septum pellucidum cysts, stable arachnoid cysts, mega cisterna magna without cerebellar mass effect, Blake's pouch cyst, giant Pacchioni granulations, pineal and neuroglial cysts, and dilated perivascular spaces. Among vascular lesions, developmental venous anomalies and capillary telangiectasias remain stable individually, yet their coexistence increases the risk of hemorrhage and necessitates follow-up. In the tumor category, intracranial lipomas showing no size increase and non-aggressive multinodular vacuolating neuronal tumors stand out. Accurate radiological differential diagnosis of all these benign entities holds critical importance in safeguarding patients from redundant advanced diagnostic procedures and erroneous surgical interventions.
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