İntraduktal büyüyen kolanjiyokarsinom

Özet

İntraduktal büyüyen iCCA, safra yolu lümeni içinde büyüyerek ektaziye yol açtığı ve üç ana morfolojik alt tipten biri olduğu kabul edilen büyüme örüntüsüdür. Genişlemiş safra yolu lümeninde düzensiz yumuşak doku dolgu kusuru aranır. İntraduktal büyüyen kolanjiyokarsinomun dinamik kontrastlanma örüntüsü nodüler alt tipten farklılık gösterebilir. BT büyüme örüntüsünü ve yayılımı gösterir, intraduktal papiller biliyer neoplaziden histolojik ayrımı tek başına yapamaz.

Faz ve pencere

Kontrastsız

Genişlemiş safra kanalında intraduktal kitle veya papiller dolum kusuru görülebilir.

Portal tanısal

Genişlemiş safra kanalında papiller intraduktal kitle görülebilir. Safra yollarındaki tümör yayılımının uzunlamasına sınırları görüntülemede değerlendirilir.

Gecikmiş tanısal

Dinamik MRG’de intraduktal büyüme gösteren ve nodüler kolanjiyokarsinom alt tiplerinin kontrastlanma örüntülerini karşılaştırın. Görüntülemede kitle benzeri kanal kalınlaşması ve periduktal infiltrasyon bulguları değerlendirilir.

BT bulguları

• İntraduktal büyüyen kolanjiyokarsinomda, tümör taşıyan kanal segmentinin proksimalindeki veya distalindeki kanal genişlemesi değerlendirilir.
• İntralüminal polipoid/papiller bileşen — genişlemiş kanal içinde görülen yumuşak doku; öncü lezyonlarla veya invaziv kolanjiyokarsinomla ilişkili olabilir.
• Düzensiz dolum kusuru — genişlemiş kanal lümeninde görülen, kısmen doldurucu düzensiz yumuşak doku odağıdır.
• Yayılım — kanallar arasında intraduktal polipoid/kast benzeri devamlılık veya çoklu segment tutulumu ile izlenebilir.
• Mukus üretimi — yaygın mukus salgısı, özellikle intraduktal papiller biliyer neoplazide, tümörün proksimalinde ve distalinde safra yolu genişlemesine yol açabilir.
• Dinamik kontrastlanma örüntüsü — intraduktal ve nodüler büyüme alt tipleri arasında farklılık gösterebilir.
• İnvaziv kolanjiyokarsinomda intraduktal polipoid büyüme, periduktal infiltratif tümörle devamlı olabilir.
• İntralüminal yayılım, invaziv kolanjiyokarsinomda periduktal infiltratif tümörle devamlı polipoid büyüme şeklinde görülebilir; kast benzeri yayılım ise bazı öncül lezyonlarda komşu kanallara uzanabilir.

Normalde

Lümen içindeki yumuşak doku komponentinin kanal duvarına tutunması ve dallara uzanımı değerlendirilir.

Ayırıcı tanı

İntraduktal papiller biliyer neoplazi kanal genişlemesi ve intraduktal kitle veya dolum kusuruyla görülebilir; tanıda görüntüleme bulguları doku örneklemesiyle birlikte değerlendirilir.

Metastatik tutulum

bilinen ekstrahepatik malignite öyküsü olan hastalarda safra yolu lümenine uzanan nodüler doku görülebilir.

İntrahepatik taşlara eşlik eden safra yolu darlıklarının infiltratif kolanjiyokarsinomdan ayırımı güç olabilir.

Periduktal infiltratif kolanjiyokarsinom, intraduktal büyüme gösteren kolanjiyokarsinomdan ayrı bir morfolojik alt tiptir.

Safra yolu genişlemesi, görüntülemede belirgin intraduktal kitle olmadan da görülebilir.

Tuzaklar

• İntraduktal papiller biliyer neoplazi kanal genişlemesi ve papiller dolum defektiyle benzer görünebilir; BT bulguları tek başına histopatolojik tanı koydurmaz.
• İntraduktal papiller biliyer neoplazi, safra yolu taşlarıyla birlikte görülebilir.
• Duktal ektazi — tek başına tümör kanıtı değildir; intraduktal büyüme veya mukus üretimi gibi lümen içi patoloji ile ilişkilendirilmelidir.
• İntraduktal papiller neoplazi ile intraduktal büyüyen kolanjiyokarsinomun görüntüleri örtüşebilir; BT örüntüyü tarif eder, patolojik alt tipi tek başına belirleyemez.

Kendini dene

1. Kolanjiyokarsinomun bildirilen morfolojik büyüme örüntülerinden hangisi safra yolu lümeni içinde büyümeyi tanımlar?

   • Kitle oluşturan örüntü
   • Periduktal infiltratif örüntü
   • İntraduktal büyüyen örüntü
   • Mikst örüntü
   Cevabı göster

   İntraduktal büyüyen örüntü. İntraduktal büyüyen örüntü, kolanjiyokarsinomun bildirilen morfolojik alt tiplerinden biridir.

2. İntraduktal papiller biliyer neoplazi (IPNB) için kaynakta belirtilen morfoloji hangisidir?

   • Papiller veya villöz
   • Düz ve mikroskobik
   • Multiloküle kistik
   • Storiform fibrotik
   Cevabı göster

   Papiller veya villöz. IPNB safra yolu epitelinden köken alır ve papiller veya villöz morfoloji gösterir.

İlgili konular

• Kitle oluşturan intrahepatik kolanjiyokarsinom
• Periduktal infiltratif intrahepatik kolanjiyokarsinom

Kaynaklar

Bu sayfadaki 36 cümle ve 2 quiz sorusu aşağıdaki kaynaklardan alıntılarla otomatik olarak karşılaştırıldı; 27 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.