title: Arc syndrome without arthrogryposis, with hip dislocation and renal glomerulocystic appearance: a case report.
abstract: BACKGROUND
  Arthrogryposis-renal dysfunction-cholestasis (ARC) syndrome is a rare multisystem disorder first described in 1979 and recently ascribed to mutation in VPS33B whose product acts in intracellular trafficking. It exhibits wide clinical variability. Arthrogryposis, spillage of various substances in the urine, and conjugated hyperbilirubinemia define an ARC core phenotype, in some patients associated with ichthyosis, central nervous system malformation, deafness, and platelet abnormalities. Many patients with different associations of cholestasis, renal tubular acidosis, and dysmorphic morphology may be underdiagnosed.
  
  
  METHODS
  We report the third patient of ARC syndrome from Turkey with an incomplete form with renal tubular dysfunction and cholestasis in the absence of arthrogryposis but exhibiting other rare features.
  
  
  CONCLUSIONS
  Our case highlights that the variability of involvement of different systems in ARC syndrome is well described; however, the renal glomerulocystic appearance has not been reported previously. Knowledge of this rare condition can benefit the practitioner as well as the patient.
authors.affiliation: Dişkapi Children's Hospital-Ankara, Incirli, Ankara, Turkey. petekarhan@yahoo.com.tr
authors.forename: Ebru
authors.initials: E
authors.lastname: Arhan
authors.forename: Arzu Meltem
authors.initials: AM
authors.lastname: Yusufoğlu
authors.forename: Tülin Revide
authors.initials: TR
authors.lastname: Sayli
mesh_terms: D000015:Abnormalities, Multiple; D001176:Arthrogryposis; D017809:Fatal Outcome; D005260:Female; D005598:Fractures, Spontaneous / Q000151:congenital; D006618:Hip Dislocation, Congenital; D006801:Humans; D051556:Hyperbilirubinemia, Neonatal; D007231:Infant, Newborn; D052177:Kidney Diseases, Cystic / Q000473:pathology; D015499:Renal Tubular Transport, Inborn Errors / Q000473:pathology; D013577:Syndrome; D014421:Turkey