Background And Study Aims: The role of cyst cytology to diagnose mediastinal duplication cysts remains controversial. Since endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) of duplication cysts has been considered as safe so far, there are only a few case reports of infections following FNA.
Case Summary: We report a case series of all patients at our institution undergoing EUS evaluation for suspected mediastinal duplication cysts ( = 5) in the last 15 years. The mediastinal lesion in 4 patients did not feature typical EUS features for duplication cysts, wherefore we did perform EUS-guided FNA in order to rule out malignancy. In 3 out of 4 patients, a duplication cyst was confirmed. The fourth lesion turned out to be a sarcoma. All 4 patients developed severe FNA-induced cyst infection causing mediastinitis and the need for surgical debridement. Despite an immediate review of the FNA by the on-site cytopathologist with establishing the diagnosis of a duplication cyst, peri-interventional broad-spectrum antibiotics could not prevent severe infections of the lesions.
Conclusions: Given the potentially high rate of infectious complications, we advocate a very restrictive indication for diagnostic FNA in mediastinal masses. Yet, in unclear cases, FNA might be indispensable despite the potential adverse events in order to rule out hypoechogenic, mediastinal malignancy.
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| http://dx.doi.org/10.1159/000464327 | DOI Listing |
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