Crohn's disease: Comparison of in vitro ultrasonographic images and histology.

Abstract:

OBJECTIVE:To examine some typical histological findings in Crohn's disease using high-frequency ultrasound and to define the echo properties of these findings. MATERIAL AND METHODS:Bowel resection specimens from 14 patients operated on for Crohn's disease were examined with a 10 MHz linear array ultrasound transducer in a saline reservoir. Needles were placed in the specimen corresponding to the ultrasound plane. After formalin fixation, histological sections were taken according to these markings. Fifty-eight ultrasonographic images with 123 regions of interest were compared with corresponding histology. RESULTS:A thickened muscularis mucosae (>0.3 mm) was found in 48 of 69 regions of interest on histology. Submucosa with slight to moderate fibrosis was imaged as an echo-rich layer with sporadic, echo-poor elements (36/56), while severe fibrosis was seen as an echo-rich layer with diffuse, echo-poor elements (40/55). Muscularis propria with slight to moderate fibrosis was seen as an echo-poor layer with sporadic, echo-rich elements (49/66) while severe fibrosis was seen as an echo-poor layer with diffuse, echo-rich elements (17/22). Crohn's rosary was seen as echo-poor extensions of the 4th echo layer (31/50). CONCLUSIONS:Typical histological findings in Crohn's disease such as a thickened muscularis mucosae and Crohn's rosary can be imaged with high-frequency ultrasound in vitro. Fibrosis in the submucosa and muscularis propria is associated with decreasing and increasing echogenicity, respectively.

journal_name

Scand J Gastroenterol

authors

Nylund K,Leh S,Immervoll H,Matre K,Skarstein A,Hausken T,Gilja OH,Birger Nesje L,Ødegaard S

doi

10.1080/00365520801898855

subject

Has Abstract

pub_date

2008-01-01 00:00:00

pages

719-26

issue

6

eissn

0036-5521

issn

1502-7708

pii

790498259

journal_volume

43

pub_type

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