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Diagnosing sarcoidosis using endosonography-guided fine-needle aspiration
A Fritscher-Ravens1, P V Sriram, T Topalidis
1Departments of Interdisciplinary Endoscopy and Internal Medicine, Pulmonology, University Hospital Eppendorf, Hamburg. FRIRAV@t-online.de
Chest
|October 18, 2000
Summary
Endoscopic ultrasonography-guided fine-needle aspiration (EUS-FNA) is a safe and sensitive method for diagnosing sarcoidosis. This technique effectively identifies mediastinal lymph nodes, offering a valuable alternative for cytological diagnosis.
Area of Science:
- Gastroenterology
- Pulmonology
- Oncology
Background:
- Cytological diagnosis of sarcoidosis is underutilized.
- Endoscopic ultrasonography (EUS) is effective for visualizing mediastinal lymph nodes.
- EUS allows for guided fine-needle aspiration (FNA) cytology.
Purpose of the Study:
- To evaluate the utility of EUS-FNA in diagnosing sarcoidosis.
- To assess the safety and sensitivity of EUS-FNA for mediastinal lymph node sampling.
Main Methods:
- Nineteen patients with suspected sarcoidosis underwent EUS-FNA.
- A linear echoendoscope and a 22-gauge needle were used.
- Mediastinal lymph nodes were analyzed cytologically.
Main Results:
- EUS identified enlarged mediastinal lymph nodes in all patients.
- EUS-FNA yielded adequate aspirate for cytology in all cases.
- Cytology revealed epithelioid cell granuloma formation, with 94% specificity and 100% sensitivity for sarcoidosis.
Conclusions:
- EUS-FNA is a safe and sensitive tool for sarcoidosis diagnosis.
- EUS-FNA aids in obtaining material for cytology and mycobacterial cultures.
- This method offers a valuable alternative for diagnosing sarcoidosis.