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Virchows Archiv

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01-03-2006 | Original Article

Sporadic Cajal cell hyperplasia is common in resection specimens for distal oesophageal carcinoma

A retrospective review of 77 consecutive surgical resection specimens

Authors: Abbas Agaimy, Peter H. Wünsch

Published in: Virchows Archiv | Issue 3/2006

Abstract

Interstitial cell of Cajal (ICC) hyperplasia has been documented in conditions associated with multiple gastrointestinal stromal tumours (GISTs) (familial GIST syndromes, Carney’s triad and von Recklinghausen’s disease) and rarely in the vicinity of sporadic GISTs. The incidence of sporadic ICC hyperplasia and the so-called seedling leiomyoma (SLM) of the lower oesophagus has not been studied in the KIT era. In a retrospective review of 77 consecutive, routinely processed oesophagogastric resection specimens for distal oesophageal carcinoma, we found foci of ICC hyperplasia in 7 of 77 (9.1%) cases and foci of SLM in 17 of 77 (22%) cases. Two types of ICC hyperplasia were recognized: a non-circumscribed type and a nodular expansile type with peripherally compressed myenteric neural tissues. All cases of ICC hyperplasia were vimentin⁺/CD34⁺/CD117⁺. SLMs were desmin⁺/vimentin⁻/CD34⁻/CD117⁻, similar to smooth muscles of the gut wall. In a prospective study of 32 non-carcinomatous specimens from age-matched patients (mostly autopsy cases), we found SLMs in only one case, but we were unable to detect ICC hyperplasia in any of the cases. We concluded that sporadic KIT-positive spindle-cell hyperplasia and SLMs were unexpectedly common in distal oesophageal specimens harbouring carcinomas. The possible mechanisms leading to the development of these putative precursor lesions will be discussed.

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Title: Sporadic Cajal cell hyperplasia is common in resection specimens for distal oesophageal carcinoma
A retrospective review of 77 consecutive surgical resection specimens
Authors: Abbas Agaimy
Peter H. Wünsch
Publication date: 01-03-2006
Publisher: Springer-Verlag
Published in: Virchows Archiv / Issue 3/2006
Print ISSN: 0945-6317
Electronic ISSN: 1432-2307
DOI: https://doi.org/10.1007/s00428-005-0117-x

At a glance: The STEP trials

Springer Medicine

Sporadic Cajal cell hyperplasia is common in resection specimens for distal oesophageal carcinoma

A retrospective review of 77 consecutive surgical resection specimens

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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