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Safra kesesi ve safra yolları · Patoloji · Yüksek öncelik

Hemobili

Hemobilia

Hemobili: yayımlanmış olgu görüntüsü, aksiyel kesit
Görüntü konuyu kısmen gösteriyor; bulgunun bir bölümü seçilebilir.

4 adım

Görüntü: Shishida M, Ikeda M, Karakuchi N ve ark., “Hemorrhagic Cholecystitis in a Patient on Maintenance Dialysis.”, 2017, Fig. 1.. PMC5624269 · doi:10.1159/000479497 · CC BY-NC 4.0. Değişiklik: yeniden boyutlandırıldı.

Özet

Hemobili, kanın hepatobiliyer sistemle iletişim kurarak safra yollarına veya safra kesesine geçmesidir; travma, biyopsi ya da biliyer girişim sonrası ortaya çıkabilir. BT anjiyografi, kanal içindeki kan/pıhtıyı ve kanamaya yol açan arteriyel psödoanevrizma ya da aktif ekstravazasyonu birlikte arar. BT'de safra kesesi veya koledokta yüksek dansiteli materyal kan pıhtısını düşündürebilir; BT bulguları özgül olmayabilir ve hemobili tanısını doğrulamak için ek görüntüleme veya klinik korelasyon gerekebilir. Aktif damar kaynağı veya pıhtıya bağlı obstrüksiyon gözden kaçarsa kanamanın yeri ve safra yolu tıkanmasının düzeyi belirsiz kalabilir.

Faz ve pencere

Kontrastsız
BT'de safra kesesi veya koledokta yüksek dansiteli materyal kan pıhtısını düşündürebilir.
Arteriyel tanısal
Karaciğer arter dalları ve girişim hattı boyunca damar havuzuyla aynı anda kontrastlanan yuvarlak psödoanevrizma veya safra yolu/karaciğer parankimine doğru aktif kontrast ekstravazasyonu aranır.
Portal
Safra yollarında lümen içi pıhtı, safra kesesinde kan içeriği, kanal genişlemesi ve eşlik eden karaciğer yaralanması ya da kitle değerlendirilir; arteriyel kaynak küçükse bu fazda seçilemeyebilir.

Önerilen pencereler: Anjiyo (G 600 / M 150), Karaciğer (G 150 / M 30), Batın (G 400 / M 50).

BT bulguları

  • BT'de safra kesesi veya koledokta yüksek dansiteli materyal kan pıhtısını düşündürebilir.
  • Koledokta kalıp biçimli lüminal materyal ve proksimal intrahepatik kanal genişlemesi; pıhtı ile obstrüksiyon birlikteliği.
  • Arteriyel fazda hepatik arter dalı komşuluğunda arterle eş zamanlı kontrastlanan yuvarlak psödoanevrizma.
  • Biliyer lümene doğru kontrast ekstravazasyonu veya karaciğer içinde giderek büyüyen kontrast havuzu.
  • Biyopsi, perkütan transhepatik drenaj, ERCP veya travma traktı boyunca arteriyobiliyer fistül şüphesi.
  • Eşlik eden karaciğer laserasyonu, subkapsüler/parankimal hematom veya hepatobiliyer tümör odağı.

Normalde

Hemobili şüphesinde BT bulguları özgül olmayabilir; BT anjiyografi kanamanın nedenini ve yerini değerlendirmeye yardımcı olur. Kıyasta hiperdens materyalin lümen içinde yerleşimini, arteriyel odakla devamlılığını ve proksimal kanal çaplarını kontrol et.

Normal BT ile kıyasla

Aynı bölgenin, kaynak veri setinde patoloji içermediği belirtilen bir BT incelemesini kesit kesit kaydırın; organ sınırlarını açarak anatomiyi hasta görüntüsüyle karşılaştırın. Küçük rastlantısal bulgular tümüyle dışlanmamıştır.

Kaynak: TotalSegmentator v2.01 veri seti (Wasserthal ve ark., Radiology: Artificial Intelligence 2023), CC BY 4.0, vaka s0541; organ sınırları veri setinin otomatik segmentasyonundan, birleştirilerek sadeleştirildi. Görüntüler 2,5 mm kesit aralığına yeniden örneklendi.

Ayırıcı tanı

Safra taşı
hemobili nedenleri arasında safra kesesi ve safra yolu taşları da yer alır; BT bulguları özgül olmayabileceğinden ek görüntüleme veya klinik korelasyon gerekebilir.
Safra çamuru ultrasonografide safra kesesinin en bağımlı bölümünde tabaka oluşturabilir.
Safra kesesi tümörü
hepatobiliyer maligniteler hemobili nedeni olabilir; BT bulguları özgül olmayabileceğinden ek görüntüleme veya klinik korelasyon gerekebilir.
Arteriyovenöz malformasyonda arteriyel fazda erken portal venöz dolum görülebilir.

Tuzaklar

  • Kontrastsız BT'deki hiperdens lüminal materyal tek başına hemobili tanısı koydurmaz; kalsifiye taş, yoğun safra ve yakın kontrast atılımı dışlanmalıdır.
  • Arteriyel ekstravazasyon aralıklı olabilir; aktif kaçak görünmemesi, pıhtı veya psödoanevrizma gibi dolaylı bulgular varken kanamayı dışlamaz.
  • Biliyer dren kateteri çevresindeki küçük psödoanevrizma artefakt veya damar kesiti sanılabilir; kateter traktını ve ardışık ince kesitleri takip et.
  • Yalnız portal faz çekilmiş incelemede küçük arteriyel kaynak atlanabilir; mevcut çekim protokolünün kanama sorusunu yanıtlayıp yanıtlamadığını belirt.

Kendini dene

  1. BT anjiyografide hepatik arter psödoanevrizması ve safra yolu içinde kan pıhtısı görülüyor. En olası tanı nedir?

    Cevabı göster

    Hemobili. Hemobili, safra yollarına kanamayı ifade eder; arteriyel psödoanevrizma ve safra yolu içindeki pıhtı bu tanıyı destekler.

  2. CTA kanama yerini göstermez ve hematokrit düşüklüğü sürerse kaynakta önerilen sonraki inceleme hangisidir?

    Cevabı göster

    Selektif intraarteriyel dijital çıkarma anjiyografisi. Kaynak, CTA kanama yerini gösteremediğinde ve hematokrit bozukluğu sürdüğünde selektif intraarteriyel dijital çıkarma anjiyografisi gerektiğini belirtiyor.

İlgili konular

Kaynaklar

Bu sayfadaki 33 cümle ve 2 quiz sorusu aşağıdaki kaynaklardan alıntılarla tek tek karşılaştırıldı; 6 cümle bu karşılaştırmada düzeltildi (2026-10-09).

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Eğitim amaçlıdır; hasta başında tanı ve tedavi kararının yerine geçmez. İçerik yapay zekâ destekli bir süreçle güncel literatüre göre cümle cümle kaynaklarla karşılaştırıldı, ancak uzman radyolog incelemesinden geçmedi. Klinik kararlarda güncel kılavuzları, kurum protokollerini ve radyoloji raporunu esas alın.