title: Pathology of the large intestine in patients with vascular type Ehlers-Danlos syndrome.
abstract: The vascular type of Ehlers-Danlos syndrome (type IV) is an infrequent disease caused by heterozygous germline mutations in the procollagen 3A gene (COL3A1). Clinical signs include characteristic facial features, easy bruising, and a translucent skin. These signs are less obvious than the hyperflexibility of skin and joints seen in other types of Ehlers-Danlos syndrome. Therefore, diagnosis of Ehlers-Danlos syndrome type IV is usually not considered until complications have occurred. Complications include spontaneous ruptures of vessels and hollow organs, particularly the colon. We, herein, report pathologic findings in colon specimens from related Ehlers-Danlos syndrome type IV patients. Thorough examination revealed abnormalities of the large bowel architecture including abrupt changes in the caliber of the lamina muscularis, secondary diverticula formation, and strongly reduced expression of abnormal collagen 3. These findings are not seen in other diseases of the colon and should prompt the pathologist to include Ehlers-Danlos syndrome type IV in the differential diagnosis of spontaneous bowel perforation in younger patients.
authors.affiliation: Institute of Pathology, University of Heidelberg, INF 220, 69120 Heidelberg, Germany. hendrik_blaeker@med.uni-heidelberg.de
authors.forename: Hendrik
authors.initials: H
authors.lastname: Bläker
authors.forename: Benjamin
authors.initials: B
authors.lastname: Funke
authors.forename: Ingrid
authors.initials: I
authors.lastname: Hausser
authors.forename: Thilo
authors.initials: T
authors.lastname: Hackert
authors.forename: Peter
authors.initials: P
authors.lastname: Schirmacher
authors.forename: Frank
authors.initials: F
authors.lastname: Autschbach
mesh_terms: D000328:Adult; D024061:Collagen Type III / Q000378:metabolism; D003106:Colon / Q000378:metabolism / Q000473:pathology*; D003108:Colonic Diseases / Q000209:etiology / Q000473:pathology; D003937:Diagnosis, Differential; D004240:Diverticulum / Q000209:etiology / Q000473:pathology; D004535:Ehlers-Danlos Syndrome / Q000145:classification* / Q000150:complications / Q000378:metabolism / Q000473:pathology*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007416:Intestinal Perforation / Q000175:diagnosis; D008297:Male; D008854:Microscopy, Electron
chemical_list: D024061:Collagen Type III