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EMR is superior to rectal suction biopsy for analysis of enteric ganglia in constipation and dysmotility.

Abstract：

BACKGROUND AND AIMS:Patients with chronic constipation or motility disorders may be referred for rectal suction biopsy (RSB) to rule out Hirschsprung's disease (HD). RSB may not be successful beyond infancy because of the increased thickness of the rectal mucosa. EMR could improve the diagnostic yield for HD when compared with traditional RSB because larger and deeper samples are acquired for analysis. METHODS:In this prospective, single-center study, patients referred for RSB were offered enrollment for concurrent EMR. Specimens were analyzed pathologically for size, submucosal ganglionic tissue, and acetylcholinesterase or calretinin staining. Biopsy results were compared with transit studies, anorectal manometry, and constipation severity through validated questionnaires. RESULTS:Seventeen patients (2 male, 15 female; mean age, 35.8 years; range, 22-61 years) were enrolled in the study from 2008 to 2014. All patients underwent anorectal manometry (88% with anorectal dysfunction, 68% with outlet obstruction) and transit studies (41% with delayed transit). There were no reports of adverse events from the RSB and EMR procedures. The RSB sample volumes were significantly lower than the EMR sample volumes (0.023 cm3 vs 0.26 cm3, P = .001). There was diagnostic tissue for submucosal visualization by RSB in 53% (9/17) of cases compared with 100% (17/17) with EMR (P = .003). No cases of HD were diagnosed by RSB; one patient had rare ganglions observed by EMR. CONCLUSIONS:EMR provides greater tissue volume and can improve the characterization of ganglion cells in rectal tissue compared with RSB in patients with moderate to severe constipation with suspected HD.

journal_name

Gastrointest Endosc

journal_title

Gastrointestinal endoscopy

authors

Barshop K,Willingham FF,Brugge WR,Zukerberg LR,Kuo B

doi

10.1016/j.gie.2017.08.037

subject

Has Abstract

pub_date

2018-03-01 00:00:00

pages

876-880

issue

3

eissn

0016-5107

issn

1097-6779

pii

S0016-5107(17)32246-0

journal_volume

87

pub_type

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