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Kaburga stres veya yetmezlik kırığı

Rib stress or insufficiency fracture

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Kaburga stres veya yetmezlik kırığı: yayımlanmış olgu görüntüsü, aksiyel+sagittal+3B kesit

4 adım

Görüntü: Fukuda Y, Kato K, Otoshi K ve ark., “Rib stress fracture in a female athlete caused by bouncing the barbell in bench press exercise: A case report.” 2024, Figure 2.. PMC10868490 · doi:10.1177/2050313x241232863 · CC BY-NC 4.0. Değişiklik: kırpıldı, yeniden boyutlandırıldı, odak işaretleri eklendi.

Özet

Tekrarlayan aşırı yüklenme normal kemikte yorgunluk (fatigue) stres kırığına; normal günlük yüklerin zayıflamış kemikte oluşturduğu hasar yetmezlik kırığına yol açabilir. Öksürük de kaburga kırığını tetikleyebilir. BT'de kırık hattı hipodens, komşu sklerotik alan ve iyileşme kallusu görülebilir; stres kırıklarında MR, BT'den daha duyarlıdır ve kemik iliği sinyal değişikliklerini gösterebilir. Bir çalışmada kaburga kırıklarının BT değerlendirmesi için rekonstrüksiyon kesit kalınlığı <1,5 mm olan görüntüler kullanılmıştır. Kırığın metastatik lezyonla karıştırılması veya patolojik kırığın stres kırığı olarak değerlendirilmesi, bu kırıkların ayrımını güçleştirir; doğru ayrım tedavi planlaması için önemlidir.

Faz ve pencere

Kontrastsız tanısal
Kemik algoritmasında kaburga korteksini çaprazlayan ince hipodens kırık hattı ve iyileşme döneminde komşu skleroz/kallus aranır; kemik iliği ödemi konvansiyonel BT'de değerlendirilirken MR kullanılabilir, DECT ise sanal non-kalsiyum haritalarıyla ödemi gösterebilir.

Önerilen pencereler: Kemik (G 1800 / M 400), Yumuşak doku (G 400 / M 40).

BT bulguları

  • Kaburganın uzun eksenine dik veya oblik uzanan ince kortikal lusensi
  • Tekrarlayan yüklenmenin bindiği kaburga segmentinde fokal periostal reaksiyon görülebilir.
  • Subakut iyileşmede kortikal kalınlaşma ve medüller skleroz
  • Mekanik aşırı yüklenme nedeniyle kaburgalarda çoklu kırık odaları veya aynı segmentte ilerleme görülebilir.
  • Kırık çevresinde yumuşak doku reaksiyonu görülebilir; eşlik eden travmada hemotoraks da saptanabilir.
  • Agresif litik yıkım, düzensiz korteks veya ekstraosseöz kitle varlığının stres kırığıyla uyumsuz olması

Normalde

BT'de stres kırığında hipodens kırık hattı ve sıklıkla komşu sklerotik alan görülebilir. Kaburga boyunca ince kesitleri izlerken BT'de hipodens kırık hattını ve ona komşu sklerotik alanı ara.

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 s1278; organ sınırları veri setinin otomatik segmentasyonundan, birleştirilerek sadeleştirildi. Görüntüler 2,5 mm kesit aralığına yeniden örneklendi.

Ayırıcı tanı

Metastaz
medüller litik/sklerotik odak, korteks yıkımı veya yumuşak doku bileşeni kırık çevresindeki düzgün kallustan ayrılır.
Akut travmatik kırık
tek olay sonrası keskin kırık ve eşlik eden başka travmatik bulgular beklenir.
İyileşen kaburga kırığı
travma öyküsü ve kallus ile uyumludur; tekrarlayan yük mekanizması bulunmayabilir.
Kostal osteomiyelit
kortikal erozyona komşu inflamatuvar yumuşak doku veya koleksiyon eşlik edebilir.

Tuzaklar

  • Bir çalışmada kaburga kırıklarının BT değerlendirmesi için rekonstrüksiyon sonrası kesit kalınlığı 1,5 mm'den az olan görüntüler kullanılmıştır.
  • İyileşme kallusu dış korteksi düzensizleştirebilir; eşlik eden medüller destrüksiyon ve yumuşak doku kitlesi yoksa agresif tümör lehine acele etme.
  • Erken stres hasarında BT normal olabilir; ağrı sürerken negatif BT kemik iliği stres reaksiyonunu dışlamaz.

Kendini dene

  1. Tekrarlayan kürek çekme sonrası fokal kaburga ağrısı olan hastada ince kortikal çizgi ve düzgün periostal kallus görülüyor. En olası tanı hangisidir?

    Cevabı göster

    Stres kırığı. Tekrarlayan yük öyküsü ve sınırlı, düzgün iyileşme reaksiyonu stres kırığını destekler. Metastazda medüller odak veya yıkıcı korteks, osteomiyelitte inflamatuvar değişiklikler; çoklu travmatik kırıkta ise akut yaralanma paterni aranır.

  2. Kaburgada kırık çizgisi çevresinde litik kemik yıkımı ve ekstraosseöz yumuşak doku kitlesi var. Hangi tanı öncelikle düşünülmelidir?

    Cevabı göster

    Kaburga metastazı. Kortikal destrüksiyonla birlikte yumuşak doku kitlesi patolojik kırık ve tümör olasılığını yükseltir. İyileşen kırıkta kallus beklenir; kas zorlanması ve kıkırdak kalsifikasyonu kemik yıkımı oluşturmaz.

İlgili konular

Kaynaklar

Bu sayfadaki 34 cümle ve 2 quiz sorusu aşağıdaki kaynaklardan alıntılarla otomatik olarak karşılaştırıldı; 15 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.