title: Pediatric atypical spitzoid neoplasms: a review with emphasis on 'red' ('spitz') tumors and 'blue' ('blitz') tumors.
abstract: BACKGROUND
  The diagnosis of pediatric atypical Spitz nevus/tumors (pASNT) is an emerging challenge in clinical dermatology and dermatopathology.
  
  
  OBJECTIVE
  We review the main clinicopathologic issues raised by pASNT and describe 2 examples of different clinicopathologic subsets of lesions.
  
  
  RESULTS
  While Spitz/Reed nevi are commonly small- to medium-sized, tan to black plaques, pASNT are large and nodular, either 'red' (dotted and/or polymorphous vascular pattern on dermoscopy; spindle and/or epithelioid tumors on histopathology: Spitz tumors, sensu strictiori) or 'blue' (homogeneous blue color on dermoscopy; intimate admixture of epithelioid cells and heavily pigmented dendritic cells on histopathology: Blitz tumors or pigmented epithelioid melanocytomas).
  
  
  CONCLUSIONS
  Different clinicopathologic settings of pASNT probably exist. Dermoscopy can aid in their recognition and classification.
authors.affiliation: Pathologic Anatomy Unit, Gaetano Rummo General Hospital, Via dell'Angelo 1, Benevento, Italy. gerardo.ferrara@libero.it
authors.forename: Gerardo
authors.initials: G
authors.lastname: Ferrara
authors.forename: Iris
authors.initials: I
authors.lastname: Zalaudek
authors.forename: Imma
authors.initials: I
authors.lastname: Savarese
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Scalvenzi
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Argenziano
mesh_terms: D002648:Child; D046169:Dermoscopy; D005260:Female; D006801:Humans; D008297:Male; D018332:Nevus, Epithelioid and Spindle Cell / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery