Çocukta bağırsak ve mezenter travması

Özet

Bisiklet gidonu çarpması veya emniyet kemeriyle ilişkili künt karın travması çocuklarda bağırsak ve mezenter yaralanmalarına yol açabilir. Kontrastlı BT serbest havayı ve fokal bağırsak anormalliklerini gösterebilir; bağırsak yaralanmasının BT bulguları silik ve özgül olmayan nitelikte olabilir. Serbest intraperitoneal hava önemli bir uyarı bulgusudur ancak tek başına anlamlı bağırsak perforasyonunu göstermez; klinik değerlendirme ve diğer BT bulgularıyla birlikte yorumlanmalı, görülmemesi de bağırsak yaralanmasını kesin olarak dışlamamalıdır. Bağırsak ve mezenter yaralanmalarının tanısındaki gecikme morbidite ve mortalite artışıyla ilişkilidir.

Faz ve pencere

Portal tanısal

Kontrastlı BT’de bağırsakta fokal anormallikler ve serbest hava değerlendirilir. Mezenter damarlarında odaklı kontrast kaçağı veya psödoanevrizma aranır.

Arteriyel tanısal

Aktif mezenterik kanama, damar kesintisi veya psödoanevrizmayı gösterebilir; rutin her bağırsak travması için zorunlu değildir ve damar hasarı şüphesinde kullanılır.

BT bulguları

• Bağırsak duvarı kesintisi — fokal duvar defekti, çevresinde inflamasyon ve pnömoperitoneumla birlikte görülebilir.
• Anormal duvar kontrastlanması — bağırsak duvarında kontrastlanmanın azalması bağırsak iskemisini düşündürür.
• İntramural hematom — travma sonrası bağırsak duvarı içinde hematom gelişebilir.
• Pnömoperitoneum — periton boşluğundaki serbest hava, travmada içi boş organ yaralanması için önemli bir uyarı bulgusudur; tek başına perforasyonu kanıtlamaz.
• Mezenterik hematom — bağırsak ansları arasında veya mezenter kökünde lokal kan koleksiyonu.
• Mezenterik yağ bulanıklığı — odaklı yağ infiltrasyonu, komşu damar kalibresinde düzensizlik veya kesintiyle birlikte olabilir.
• Bağırsak travmasında serbest sıvı — çocuklarda künt duodenal yaralanma serisinde BT’de 10 hastanın tümünde serbest intraperitoneal sıvı saptanmıştır.
• Ekstraluminal kontrast veya enterik içerik — lümen dışına çıkan kontrast, perforasyon için doğrudan bulgudur.

Normalde

Şüpheli bölgede fokal bağırsak anormallikleri ve ekstraluminal hava olup olmadığını değerlendirin.

Ayırıcı tanı

Hipoperfüzyon kompleksi

çoklu bağırsak anslarında yaygın duvar ödemi ve kontrastlanma değişikliği vardır; tek bir mezenterik damar odağı veya fokal perforasyon olmayabilir.

Enfeksiyöz enterit

daha uzun segmentli ve simetrik duvar kalınlaşması yapabilir; fokal mezenter hematomu, serbest hava veya travmatik damar kesintisi beklenmez.

İnflamatuvar bağırsak hastalığı

segmental duvar kalınlaşması ve kronik mezenterik değişiklikler gösterebilir; ani travmatik ekstraluminal hava ile uyumlu değildir.

Solid organ yaralanmasına bağlı hemoperitoneum

serbest sıvının yanında karaciğer veya dalakta doğrudan yaralanma vardır; bu sıvı bağırsak hasarını tek başına kanıtlamaz.

Yalın mezenterik kontüzyonda BT’deki mezenterik bulgular özgül olmayabilir; bu görünüm tek başına cerrahi gerektiren bağırsak veya mezenter yaralanmasını belirlemeye yetmeyebilir.

Tuzaklar

• Az miktarda pelvik sıvıyı tek başına perforasyon olarak yorumlama; karaciğer-dalak yaralanmasını, sıvı dağılımını ve bağırsak duvarı bulgularını birlikte izle.
• Serbest hava görülmemesi bağırsak yaralanmasını kesin olarak dışlamaz; başlangıçtaki BT tanısal değilse klinik izlem sürdürülmeli ve bulgular devam ederse yeniden değerlendirilmelidir.
• Mezenterik damar çevresindeki küçük hematomu yalnız kontüzyon sayma; distal ansın kontrastlanması ve damar devamlılığını birlikte değerlendir.

Kendini dene

1. Travmalı çocukta bağırsak ansı dışında hava ve fokal duvar kesintisi görülüyor. En olası yaralanma nedir?

   • Bağırsak perforasyonu
   • Mezenter kontüzyonu
   • İntramural hematom
   • Hipoperfüzyon kompleksi
   Cevabı göster

   Bağırsak perforasyonu. Bir çocuk olgusunda BT’de kolon duvarı defekti, çevre inflamasyon ve pnömoperitoneum görülmüş; laparotomide perforasyon doğrulanmıştır. BT'de bağırsak duvarı defekti ve pnömoperitoneum perforasyon şüphesini güçlendirir; ancak bağırsak ve mezenter yaralanmaları BT'de silik ve özgül olmayan görünümler gösterebilir.

2. Çocuklarda künt karın travmasının BT değerlendirmesinde tanısı solid organ yaralanmalarına kıyasla daha zor olabilen yaralanma grubu hangisidir?

   • Bağırsak ve mezenter yaralanmaları
   • Dalak yaralanmaları
   • Karaciğer yaralanmaları
   • Böbrek yaralanmaları
   Cevabı göster

   Bağırsak ve mezenter yaralanmaları. BT’de solid organ yaralanmalarını tanımak, bağırsak veya mezenter yaralanmalarını tanımaktan daha kolaydır.

Kaynaklar

Bu sayfadaki 35 cümle ve 2 quiz sorusu aşağıdaki kaynaklardan alıntılarla otomatik olarak karşılaştırıldı; 19 cümle bu karşılaştırmada düzeltildi (2026-10-09).

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Eğitim amaçlıdır; hasta başında tanı ve tedavi kararının yerine geçmez, tıbbi tavsiye değildir. Metinler yapay zekâ desteğiyle yazıldı ve otomatik bir adımda kaynak alıntılarıyla karşılaştırıldı; bu bir tıbbi doğrulama değildir ve içerik uzman radyolog incelemesinden geçmedi. Klinik kararlarda güncel kılavuzları, kurum protokollerini ve radyoloji raporunu esas alın.