Akut Pankreatitte Radyoloji
Özet
Akut pankreatit (AP), hafif ödemden şiddetli nekroza kadar değişebilen, pankreasın yaygın inflamatuar bir hastalığıdır. Tanı için kuşak tarzı karın ağrısı, serum amilaz veya lipaz seviyelerinin üç kat artışı ve görüntüleme bulgularından en az ikisinin varlığı gereklidir. Erken evrede (ilk 72 saat) görüntüleme genellikle endike değildir; ancak 72-96 saat sonra yapılan kontrastlı Bilgisayarlı Tomografi (BT), nekrozu ve komplikasyonları belirlemede altın standarttır. Revize Atlanta Sınıflandırmasına göre AP, interstisyel ödematöz ve nekrotizan olmak üzere iki morfolojik tipe ayrılır. İnterstisyel form daha sık görülüp daha düşük mortaliteye sahipken, nekrotizan formda mortalite oranı %30’lara kadar çıkabilmektedir. Manyetik Rezonans Görüntüleme (MRG), özellikle yumuşak doku çözünürlüğü, kanal değerlendirmesi ve iyotlu kontrasta alerjisi olan hastalar için BT'ye önemli bir alternatiftir. Hastalık seyri boyunca peripankreatik sıvı koleksiyonları, psödokistler ve "walled-off" nekroz gibi lokal komplikasyonlar ile venöz tromboz gibi vasküler sorunlar gelişebilir. Klinik şiddet ise organ yetmezliğinin süresine göre hafif, orta veya şiddetli olarak kategorize edilir ve prognoz tayininde BT şiddet indeksi gibi skorlama sistemleri kullanılır. Sonuç olarak radyoloji, AP'nin tanı, etiyoloji, şiddet tayini ve tedavi planlamasında kritik bir rol oynamaktadır.
Acute pancreatitis (AP) is a common inflammatory process of the pancreas ranging from mild interstitial edema to severe necrotic disease that can result in significant morbidity and mortality. Diagnosis requires at least two of three criteria: severe epigastric pain, elevated serum lipase or amylase levels, and characteristic imaging findings. While imaging is generally not indicated in the early phase (less than 72 hours), contrast-enhanced Computed Tomography (CT) performed after 72-96 hours is the primary modality for identifying complications and assessing the extent of necrosis. According to the Revised Atlanta Classification, AP is divided into interstitial edematous and necrotizing types, with the latter carrying a much higher mortality rate. Magnetic Resonance Imaging (MRI) offers advantages in evaluating biliary ducts and detecting debris within collections, making it a valuable alternative for patients with renal failure or contrast allergies. Local complications such as pseudocysts and walled-off necrosis, as well as vascular issues like venous thrombosis, are classified based on their content and timing. Ultimately, radiological evaluation using scoring systems like the CT Severity Index is essential for determining disease severity, guiding interventional treatments, and monitoring the progression to chronic pancreatitis.
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