title: Rescue Endoscopic Ultrasound (EUS)-Guided Trucut Biopsy Following Suboptimal EUS-Guided Fine Needle Aspiration for Mediastinal Lesions.
abstract: OBJECTIVE
  Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) and Trucut biopsy (TCB) are sensitive techniques for diagnosing mediastinal lesions, but it is unclear how either one or both should be used to obtain a pathologic diagnosis. The objective of our study was to evaluate whether EUS-TCB impacts the diagnosis of mediastinal lesions after the initial on-site review of EUS-FNA specimen suggests a suboptimal result.
  
  
  METHODS
  We enrolled consecutive patients with mediastinal lesions who underwent EUS-TCB during the same procedure if the initial EUS-FNA demonstrated an inadequate FNA sample or suggested that histopathology was required for diagnosis. Diagnostic accuracies between procedures were compared as the main outcome.
  
  
  RESULTS
  Twenty-seven patients (14 men; median age, 56 years; range, 19 to 82 years) underwent EUS-FNA and EUS-TCB to evaluate a mediastinal lymphadenopathy or mass (n=17), to determine the cancer stage (n=3) or to exclude tumor recurrence or metastasis (n=7). The overall diagnostic accuracies of EUS-FNA and EUS-TCB were 78% and 67%, respectively (p=0.375). The combined diagnostic accuracy of EUS-FNA plus EUS-TCB was 82%. In six patients with nondiagnostic EUS-FNA, EUS-TCB provided a final diagnosis in one patient (17%).
  
  
  CONCLUSIONS
  In the current series of patients with mediastinal masses or adenopathy, the administration of EUS-TCB following suboptimal results for the on-site cytology review did not increase the diagnostic yield.
authors.affiliation: Division of Gastroenterology and Hepatology, Indiana University Medical Center, Indianapolis, IN, USA. ; Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.
authors.forename: Chang-Min
authors.initials: CM
authors.lastname: Cho
authors.forename: Mohammad
authors.initials: M
authors.lastname: Al-Haddad
authors.forename: Julia K
authors.initials: JK
authors.lastname: Leblanc
authors.forename: Stuart
authors.initials: S
authors.lastname: Sherman
authors.forename: Lee
authors.initials: L
authors.lastname: McHenry
authors.forename: John
authors.initials: J
authors.lastname: Dewitt
keywords: Endoscopic ultrasound; Endoscopic ultrasound-guided Trucut biopsy; Endoscopic ultrasound-guided fine needle aspiration; Mediastinum
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