Radyasyon Enterokoliti

Yazarlar

Okan Murat Aktürk
Begüm Demirler Şimşir
Khadija Mustafayeva

Özet

Radyoterapi, özellikle karın ve pelvis içi kanserlerin tedavisinde önemli bir araç olmakla birlikte, radyosensitif olan ince bağırsak ve rektum dokularına kaçınılmaz zararlar verebilmektedir. Bu durum, akut dönemde ishal, karın ağrısı ve tenesmus gibi kendini sınırlayan semptomlarla seyreden, kronik dönemde ise tedaviden aylar veya yıllar sonra ilerleyici fibrozis ve obliteratif endarterit ile ciddi klinik tablolara yol açan radyasyon enterokoliti ve proktitine neden olur. Hastalığın tanısında pelvik radyasyon öyküsü, klinik semptomlar, sigmoidoskopi bulguları ve bilgisayarlı tomografi ile manyetik rezonans görüntüleme gibi radyolojik tetkikler kritik rol oynar. Tedavi yaklaşımları genellikle basamaklı bir patika izler; hafif vakalarda noninvaziv yöntemler (diyet, ilaç tedavileri, sukralfat, kısa zincirli yağ asitleri ve hiperbarik oksijen) tercih edilirken, dirençli kanamalarda argon plazma koagülasyonu, formalin uygulaması ve radyofrekans ablasyon gibi endoskopik termal yöntemler kullanılır. İlaç ve endoskopik tedavilere yanıt vermeyen, bağırsak tıkanıklığı, perforasyon, apse veya fistül gibi ciddi komplikasyonlar geliştiren dirençli kronik vakalarda ise son çare olarak diversiyon stoması veya hastalıklı segmentin rezeksiyonunu içeren riskli cerrahi müdahaleler kaçınılmaz hale gelmektedir.

Although radiotherapy is a vital tool for treating intra-abdominal and pelvic malignancies, it inevitably damages the highly radiosensitive small intestine and rectal tissues. This injury leads to radiation enterocolitis and proctitis, presenting as acute self-limiting symptoms like diarrhea, cramps, and tenesmus, or developing months to years later into chronic conditions driven by progressive fibrosis and obliterative endarteritis. Diagnosis relies heavily on a history of pelvic radiation, clinical symptoms, sigmoidoscopy findings, and advanced radiological imaging such as computed tomography and magnetic resonance enterography. Management strategies generally follow a step-by-step approach; noninvasive options like medical therapies, sucralfate, short-chain fatty acids, and hyperbaric oxygen are used for mild cases, while endoscopic methods including argon plasma coagulation, formalin instillation, and radiofrequency ablation target refractory bleeding. For intractable chronic cases that fail to respond to medical or endoscopic treatments, or for patients presenting with severe life-threatening complications such as strictures, fistulas, abscesses, or perforations, surgical interventions like fecal diversion stoma or bowel resection remain a necessary last resort despite their associated high morbidity risks.

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