title: An infected esophageal duplication cyst in a patient with non-Hodgkin's lymphoma mimicking persistent disease.
abstract: Differentiation of mediastinal cysts appearing as soft-tissue attenuation masses on computed tomography (CT) scans from malignant mediastinal masses is difficult. We report a patient with non-Hodgkin's lymphoma, who was considered to have persistent disease in the posterior mediastinum based on CT scans. However, endoscopic ultrasound (EUS) demonstrated a paraesophageal, fluid-filled cyst with echodens inclusions and no evidence of any solid component. EUS-guided fine-needle aspiration (FNA) revealed mucous, epithelial and inflammatory cells, and additionally candida albicans was cultured. Based on these findings and constant size during follow-up, the diagnosis of an infected esophageal duplication cyst was made. Thus, this report further demonstrated the impact of EUS and EUS-FNA for management of posterior mediastinal cystic lesions in selected cases.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Johann Wolfgang Goethe University Medical Centre, Frankfurt, Germany. trojan@em.uni-frankfurt.de
authors.forename: J
authors.initials: J
authors.lastname: Trojan
authors.forename: S
authors.initials: S
authors.lastname: Mousset
authors.forename: W F
authors.initials: WF
authors.lastname: Caspary
authors.forename: N
authors.initials: N
authors.lastname: Hoepffner
mesh_terms: D000328:Adult; D044963:Biopsy, Fine-Needle; D002177:Candidiasis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D019160:Endosonography; D004934:Esophageal Cyst / Q000175:diagnosis*; D004935:Esophageal Diseases / Q000382:microbiology*; D005500:Follow-Up Studies; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis*; D016399:Lymphoma, T-Cell / Q000175:diagnosis*; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed; D018084:Ultrasonography, Interventional