title: Nailfold capillary abnormalities are prevalent in sclerodermoid graft-versus-host disease and readily detected with dermatoscopy.
abstract: BACKGROUND
  Well-recognized videocapillaroscopic patterns have been described in systemic sclerosis (SS). However, no studies have described the capillary abnormalities of sclerodermoid chronic graft-versus-host disease (Scl GVHD) developed after allogeneic haematopoietic stem cell transplantation (allo-HSCT).
  
  
  OBJECTIVE
  The aims of this study were to find the characteristics of nailfold capillary changes in Scl GVHD after allo-HSCT.
  
  
  METHODS
  Eighteen patients affected by Scl GVHD and a control group of 15 patients with lichenoid GVHD were evaluated. Duration and type of sclerodermoid GVHD, Raynaud phenomenon (RP), dysphagia, joint contractures, antinuclear antibodies (ANA), anti-Scl-70 and anticentromere (ACA) antibodies were investigated parameters. A nailfold capillary examination using a standard dermatoscope was performed on all fingers of each subject.
  
  
  RESULTS
  Twelve patients were male and six were female with a mean age of 37 +/- 11.6 years. Joint retractions and dysphagia developed in 27.8% and 38.9% of the patients, respectively. Three (16.7%) patients had RP. Autoimmune markers like anti-Scl-70 and ACA were negative in all. Capillaroscopy was abnormal in 15 patients with Scl GVHD. A regular disposition of the capillary loops along with avascular whitish linear areas at the level of the last row, neovascularization with reticular pattern, capillary disorganization, haemorrhages, enlarged capillaries and avascular areas were the main features. No capillary abnormalities were observed in patients with lichenoid GVHD. There was no statistically significant correlation between ANA positivity, RP, joint retractions, dysphagia, extensiveness of Scl GVHD, duration of sclerodermoid lesions and nailfold capillaroscopy analysis.
  
  
  CONCLUSIONS
  This study shows the identification of distinct nailfold capillaroscopy patterns in patients with Scl GVHD but it does not confer special risk for any other specific clinical symptoms of the disease.
authors.affiliation: Departments of Dermatology and Hematology, University of Ankara School of Medicine, Ankara, Turkey. nisaakay15@yahoo.com
authors.forename: B N
authors.initials: BN
authors.lastname: Akay
authors.forename: H
authors.initials: H
authors.lastname: Sanli
authors.forename: P
authors.initials: P
authors.lastname: Topcuoglu
authors.forename: M
authors.initials: M
authors.lastname: Arat
authors.forename: A
authors.initials: A
authors.lastname: Akyol
mesh_terms: D000328:Adult; D002196:Capillaries / Q000473:pathology; D005260:Female; D006086:Graft vs Host Disease / Q000209:etiology / Q000473:pathology*; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects; D006801:Humans; D008297:Male; D020678:Microscopic Angioscopy / Q000379:methods; D008875:Middle Aged; D009262:Nails / Q000098:blood supply*; D009389:Neovascularization, Pathologic / Q000209:etiology / Q000473:pathology; D012595:Scleroderma, Systemic / Q000209:etiology / Q000473:pathology*; D055815:Young Adult