Journals / Turkish Journal of Gastroenterology / 1999 / Cilt: 10 - Sayı: 3

The role of endoscopic ultrasonography in the evaluation mediastinal lymph node metastasis in lung cancer patients

Akciğer kanserinde mediastinal lenf metastazı değerlendirilmesinde endoskopik ultrasonografi

Pages
261–267
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

We conclude that EUS can show mediastinal lymph nodes, apart from pre, paratracheal nodes and may be considered as a complementary modality to CT in the assessment of mediastinal lymph nodes.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this preliminary study was to evaluate the diagnostic capability of endoscopic ultrasonography (EUS) in the detection of mediastinal lymph node metastasis.
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Key Findings & Data:EUS was performed by one examiner who was unaware of the results of the other imaging methods, with the Olympus instrument GF-UM20 which has a radial scanner with 7.5 and 12 MHz.
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Conclusion & Impact:We conclude that EUS can show mediastinal lymph nodes, apart from pre, paratracheal nodes and may be considered as a complementary modality to CT in the assessment of mediastinal lymph nodes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Endosonografi · Lenfatik metastaz · Akciğer neoplazmları

Abstract

The aim of this preliminary study was to evaluate the diagnostic capability of endoscopic ultrasonography (EUS) in the detection of mediastinal lymph node metastasis. Twenty-five consecutive patients with lung cancer were included in the study and all patients underwent preoperative transesophageal EUS and computed tomography (CT) examinations on mediastinal lymph nodes. EUS findings were compared with those of CT. EUS was performed by one examiner who was unaware of the results of the other imaging methods, with the Olympus instrument GF-UM20 which has a radial scanner with 7.5 and 12 MHz. The location, number and size of the lymph nodes were recorded. Eighty-five mediastinal lymph nodes were viewed by EUS, of which 36 were less than 10 mm and 48 were more than 10 mm in diameter. Seventy-four lymph nodes were shown by CT. The results were assessed according to six lymph node sites. CT was found to be superior to EUS in detecting upper mediastinal lymph nodes while EUS was found to be superior to CT in detecting right and left tracheobronchial, subaortic, hilar and paraesophageal lymph nodes. Given this advantageEUS may be helpful in the diagnosis of N2 metastasis. We conclude that EUS can show mediastinal lymph nodes, apart from pre, paratracheal nodes and may be considered as a complementary modality to CT in the assessment of mediastinal lymph nodes.

Özet

Bu çalışmanın amacı mediastinal lenf nodu metastazlarının değerlendirilmesinde endoskopik ultrasonografi (EUS) sonuçlarının bilgisayarlı tomografi (BT) bulgularıyla karşılaştırılmasıdır. Akciğer kanseri tanısı konan 25 hasta çalışmaya alındı. Tüm hastaların mediastinal lenf nodları transözofagial EUS ve BT ile incelendi. EUS bulguları BT sonuçları ile karşılaştırıldı. EUS muayeneleri 7.5 ve 12 MHz radial problu (Olympus GF UM 20) ekoendoskop ile BT ve diğer laboratuar sonuçlarından habersiz olarak gerçekleştirildi. Lenf nodlarının lokalizasyonu, sayısı ve büyüklüğü kaydedildi. EUS ile toplam 85 mediastinal lenf nodu görüntülendi. Bu nodların 36'sı 10 mm.'den küçük, 48'i 10 mm.'den büyüktü. BT ile 74 tane lenf nodu saptandı. Sonuçlar lenf nodları altı bölgeye ayrılarak değerlendirildi. Üst mediastinal lenf nodlarının belirlenmesinde BT'nin daha üstün olduğu, buna karşılık sağ ve sol trakeobronşial, subaortik, subkarinal, hiler, paraözofagial bölgede yerleşmiş lenf nodlarının görüntülenmesinde EUS'nin daha üstün olduğu belirlendi. EUS bu üstünlüğü ile N2 metastaz tanısı konmasında ve tümörün evrelendirilmesinde önemli bir ilerleme sağlamaktadır. Çalışma sonunda akciğer kanserinin preoperatif değerlendirilmesinde EUS'nin üst mediasten, para ve pretrakeal dışındaki bölgelerde yer alan lenf nodlarının saptanmasında BT bulgularına önemli katkıda bulunabileceği, her iki görüntüleme yönteminin birbirine alternatif olmaktan çok birbirini tamamladığı kanısına varıldı.

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Cite This Article

SONGÜR, N., SONGÜR, Y., ERKAN, L., BİBER, Ç., ERDOĞAN, Y., ŞAHİN, B. (1999). The role of endoscopic ultrasonography in the evaluation mediastinal lymph node metastasis in lung cancer patients. Turkish Journal of Gastroenterology, Cilt: 10 - Sayı: 3, 261–267. https://ajindex.com/articles/410558

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