Özofagus Fonksiyonlarının Değerlendirilmesi
Özet
Özofagus hastalıklarının tanısı, klinik semptomların yönlendirdiği yapısal, fonksiyonel ve mide içeriğine maruziyeti gösteren tamamlayıcı testlerle konulmaktadır. Yapısal bozuklukların ve motor fonksiyonların değerlendirilmesinde ilk tercih baryumlu özofagografidir. Bu yöntem tek, çift veya modifiye kontrast ajanlarla lümen, mukoza ve yutma fonksiyonunu floroskopik olarak inceler. Bilgisayarlı tomografi özellikle kanser evrelemesi ve perforasyonlarda kullanılırken; MRG rezektabilite, PET ise uzak metastaz saptamada etkilidir. Sintigrafi, manometri uygulanamayan hastalarda kısıtlı bir yere sahiptir. Endoskopi, mukozal lezyonların, akalazyanın ve varislerin doğrudan tanısı, biyopsisi ve cerrahi dışı tedavisi (balon dilatasyonu, POEM) için temel taştır. Endoskopik ultrasonografi (EUS), tümör infiltrasyon derinliğini belirlemede en güvenilir yöntemdir. Fonksiyonel bozukluklarda altın standart olan yüksek çözünürlüklü özofageal manometri; sfinkter basınçlarını ve kasılma koordinasyonunu ölçer. Mide asidi maruziyetini ölçmede altın standart ise antireflü cerrahisi öncesi mutlaka yapılan 24 saatlik pH monitörizasyonudur. Ayrıca, multikanal intraluminal impedans asidik olmayan reflüyü, mukozal impedans tedavi yanıtını, Bernstein testi asit duyarlılığını ve Bilitec 2000 ise safra reflüsünü spektrofotometrik olarak değerlendirir. Tüm bu tetkikler doğru tedavi stratejisini belirler.
Diagnosis of esophageal diseases is established through complementary structural, functional, and gastric exposure tests guided by clinical symptoms. Barium esophagography is the initial choice for evaluating structural and motor functions, examining the lumen, mucosa, and swallowing mechanisms via single, double, or modified contrast fluoroscopy. Computed tomography is primarily utilized for cancer staging and perforations, while MRI assesses regional resectability, and PET excels in detecting distant metastases. Scintigraphy holds a limited role when manometry is unfeasible. Endoscopy serves as the cornerstone for direct visualization, biopsy, and non-surgical management of mucosal lesions, achalasia, and varices. Endoscopic ultrasonography (EUS) remains the most reliable modality for determining tumor infiltration depth. High-resolution esophageal manometry is the gold standard for functional disorders, measuring sphincter pressures and contraction coordination. For evaluating gastric acid exposure, 24-hour pH monitoring stands as the gold standard, particularly required before antireflux surgery. Additionally, multichannel intraluminal impedance identifies non-acidic reflux, mucosal impedance monitors treatment responses, the Bernstein test measures acid sensitivity, and the Bilitec 2000 spectrophotometrically evaluates duodenogastroesophageal bile reflux. Collectively, these diagnostic tools ensure the application of accurate medical and surgical options.
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