Abstract
Background
Data on the utility of endoscopic ultrasound-guided Trucut biopsy (EUS-TCB) for suspected gastrointestinal mesenchymal tumor (GIMT) are limited. This study aimed to determine the diagnostic yield and complications from EUS-TCB for GIMT.
Methods
Consecutive patients with suspected upper gastrointestinal or rectal GIMT from the muscularis propria with a maximal diameter of 20 mm or more were enrolled in a prospective, single-center cohort. An EUS-TCB was performed when on-site fine-needle aspiration (FNA) cytology review of the lesion was deemed suboptimal. Gastrointestinal stromal tumor (GIST) and leiomyoma were defined by the presence or absence of positive immunochemistry (IC) for c-kit, respectively. All GIMTs with a nondiagnostic IC were considered as unspecified. The outcomes assessed included diagnostic pathologic and IC yield (when tested) and procedural complications.
Results
In this study, 38 patients (24 women; median age, 62 years) with suspected GIMT (median maximal diameter, 42 mm; range, 20–120 mm) in the esophagus (n = 6), stomach (n = 28), duodenum (n = 3), or rectum (n = 1) underwent EUS-TCB without complications. Final diagnoses included GIST for 20 patients, leiomyoma for 13 patients, unspecified GIMT for 3 patients, and unknown disorder for 2 patients. An EUS-FNA was performed for 33 (87%) of the 38 patients, a diagnostic final cytology for 25 (76%) of 33 patients, and an FNA-IC for 12 (50%) of 24 patients. The EUS-TCB (median, 3 passes; range, 1–8 passes) obtained a visible tissue specimen in 37 (97%) of the 38 patients, with a median overall maximal fragment length of 3.5 mm (range, 0–15 mm). The diagnostic final TCB histology and TCB-IC were obtained, respectively, in 79 and 97% of the samples tested.
Conclusions
In this cohort, EUS-TCB provided diagnostic histology and IC for 79 and 97% of the patients, respectively. For the initial biopsy of GIMT, EUS-TCB may be considered an acceptable alternative to EUS-FNA.
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Disclosures
John DeWitt and Julia K. LeBlanc have received honoraria from Cook Endoscopy, Inc. Robert E. Emerson, Stuart Sherman, Mohammad Al-Haddad, Lee McHenry, Gregory A. Cote have no conflicts of interest or financial ties to disclose.
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DeWitt, J., Emerson, R.E., Sherman, S. et al. Endoscopic ultrasound-guided Trucut biopsy of gastrointestinal mesenchymal tumor. Surg Endosc 25, 2192–2202 (2011). https://doi.org/10.1007/s00464-010-1522-z
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DOI: https://doi.org/10.1007/s00464-010-1522-z