Vanderheyden AD, Proctor KA, Rizk MK, Silva RG, Jensen CS, Gerke H. The value of touch imprint cytology in EUS-guided Trucut biopsy.
Gastrointest Endosc 2008;
68:44-50. [PMID:
18355821 DOI:
10.1016/j.gie.2007.11.042]
[Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2007] [Accepted: 11/24/2007] [Indexed: 02/08/2023]
Abstract
BACKGROUND
EUS-guided Trucut biopsy (TCB) enables the acquisition of tissue cores for histologic assessment. Touch imprint cytology (TIC) can be performed at the time of a biopsy to assess the adequacy of the sample; however, limited information is available on the diagnostic value of TIC of these specimens.
OBJECTIVE
To investigate the diagnostic accuracy of TIC compared with a TCB.
PATIENTS AND DESIGN
Consecutive EUS-guided TCB and TIC (n = 109) were retrospectively and independently reviewed by a surgical pathologist (for the TCB) and a cytopathologist (for TIC) blinded to the final diagnoses.
SETTING
University of Iowa Hospitals and Clinics, Iowa.
MAIN OUTCOME MEASUREMENTS
Diagnostic accuracy of a TCB, TIC, and combined TCB + TIC.
RESULTS
The diagnostic accuracy of a TCB was 92.7% (95% CI, 83.1%-97.3%), TIC was 82.6% (95% CI, 74.3%-88.6%), and TCB + TIC was 95.4% (95% CI, of 89.4%-98.3%). The diagnostic accuracy of a TCB alone was superior to TIC alone (P = .038); a TCB was diagnostic in 14 cases that were nondiagnostic by TIC. The addition of TIC allowed for the identification of 3 malignancies (2.8%) that were not identified on TCB alone. In 22 cases, TIC was considered diagnostic, but a TCB provided additional specific diagnostic information.
LIMITATIONS
Retrospective study and relatively low numbers.
CONCLUSIONS
TIC is a valuable tool for use in a EUS-guided TCB; TIC is independently diagnostically accurate, which allows for confidence in a rapid preliminary diagnosis, and it provides additional diagnostic value when combined with TCB.
Collapse