title: Angiolymphoid hyperplasia with eosinophilia and entrapment of the ulnar nerve.
abstract: BACKGROUND
  The angiolymphoid hyperplasia with eosinophilia (ALHE) is a sporadic vasoproliferative lesion of uncertain etiology involving the skin and the subcutaneous tissue. Occasionally, it involves also the large arteries compressing the near nerves. ALHE is commonly confused with Kimura's disease because of their clinical and histological similarities.
  
  
  METHODS
  We report a case of a 52-year-old female suffering from a 6-month pain and paresthesias in the fourth and fifth finger of the right hand. The angiography showed a pseudoaneurysm in the proximal third of the right ulnar artery. A complete surgical excision of the vascular lesion was undertaken. The lesion forced the right ulnar nerve. The histopathological diagnosis deposed for ALHE.
  
  
  CONCLUSIONS
  Up to now, literature has described 8 cases of ALHE involving the arteries, and only one case originating from the ulnar nerve. The authors report a case of a female with ALHE involving the ulnar artery that compressed the ulnar nerve. Clinical aspects, radiological features, surgical treatment, and operative findings are discussed reviewing the pertinent literature.
authors.affiliation: Department of Life, Health and Environmental Sciences (MESVA), University of L'Aquila, L'Aquila, Italy.
authors.forename: Hambra
authors.initials: H
authors.lastname: Di Vitantonio
authors.affiliation: Department of Neurosurgery, San Salvatore city Hospital, L'Aquila, Italy.
authors.forename: Danilo
authors.initials: D
authors.lastname: De Paulis
authors.affiliation: Department of Neurosurgery, San Salvatore city Hospital, L'Aquila, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Ricci
authors.affiliation: Department of Life, Health and Environmental Sciences (MESVA), University of L'Aquila, L'Aquila, Italy.
authors.forename: Soheila Dehcordi
authors.initials: SD
authors.lastname: Raysi
authors.affiliation: Department of Neurosurgery, San Salvatore city Hospital, L'Aquila, Italy.
authors.forename: Sara
authors.initials: S
authors.lastname: Marzi
authors.affiliation: Department of Life, Health and Environmental Sciences (MESVA), University of L'Aquila, L'Aquila, Italy.
authors.forename: Mattia
authors.initials: M
authors.lastname: Del Maestro
authors.affiliation: Department of Life, Health and Environmental Sciences (MESVA), University of L'Aquila, L'Aquila, Italy.
authors.forename: Renato Juan
authors.initials: RJ
authors.lastname: Galzio
keywords: Angiolymphoid hyperplasia with eosinophilia; entrapment; pseudoaneurysm; ulnar nerve