title: Papillary endothelial hyperplasia (Masson's tumor) in children.
abstract: The intravascular papillary endothelial hyperplasia (IPEH/Masson's tumor) is a rare benign tumor of the skin and subcutaneous vessels. We report, in four pediatric cases, clinical presentation, care (diagnostic and surgical) of Masson's tumor in children. Two boys (two years) and two girls (four and six years) showed a pain subcutaneous tumor (one to five centimeters). They were in the transverse abdominal muscle, between two metatarsals, at the front of thigh and in the axilla. Imaging performed (MRI, Doppler ultrasound) evoked either a hematoma, a lymphangioma or hemangioma. The indication for removal was selected from pain and/or parental concern. The diagnosis was histologically. A lesion persisted in residual form (incomplete initial resection), and is currently not scalable for eleven years.
  
  
  CONCLUSIONS
  This tumor is characterized by excessive proliferation and papillary endothelial cells in the vessels, following a thrombotic event. It is found mainly in adults (no specific age), and preferentially localizes in the face and limbs. The clinical differential diagnosis of this tumor is angiosarcoma. The imagery has not allowed in our series to diagnose but still essential to eliminate differential diagnoses. Only surgical excision with histological examination can differentiate. Our study emphasizes the possibility of pediatric cases with two cases of unusual locations (abdominal and axilla). Clinical presentations we met, now lead us to direct our histologist looking for a Masson tumor in any child with a subcutaneous tumor and/or intramuscular pain, sudden onset, and vascular appearance (after excluding an arteriovenous malformation).
authors.affiliation: CHU de Reims, American Memorial Hospital, Chirurgie pédiatrique, 47, rue Cognacq-Jay, 51100 Reims, France.
authors.forename: A
authors.initials: A
authors.lastname: Liné
authors.affiliation: CHU de Reims, Hôpital Maison-Blanche, Chirurgie plastique reconstructrice et esthétique, 45, rue Cognacq-Jay, 51100 Reims, France.
authors.forename: J
authors.initials: J
authors.lastname: Sanchez
authors.affiliation: CHU de Reims, Hôpital Maison-Blanche, Chirurgie plastique reconstructrice et esthétique, 45, rue Cognacq-Jay, 51100 Reims, France.
authors.forename: L
authors.initials: L
authors.lastname: Jayyosi
authors.affiliation: Hôpital Maison-blanche, Pol BOUIN, Laboratoire de Biopathologie, 45, rue Cognacq-Jay, 51100 Reims, France.
authors.forename: P
authors.initials: P
authors.lastname: Birembaut
authors.affiliation: CHU de Reims, Hôpital Maison-Blanche, Chirurgie orthopédique, 45, rue Cognacq-Jay, 51100 Reims, France.
authors.forename: X
authors.initials: X
authors.lastname: Ohl
authors.affiliation: CHU de Reims, American Memorial Hospital, Chirurgie pédiatrique, 47, rue Cognacq-Jay, 51100 Reims, France.
authors.forename: M-L
authors.initials: ML
authors.lastname: Poli-Mérol
authors.affiliation: CHU de Reims, American Memorial Hospital, Chirurgie pédiatrique, 47, rue Cognacq-Jay, 51100 Reims, France; CHU de Reims, Hôpital Maison-Blanche, Chirurgie plastique reconstructrice et esthétique, 45, rue Cognacq-Jay, 51100 Reims, France; Université de Reims Champagne-Ardenne, EA 3801, 51, rue Cognacq-Jay, 51100 Reims, France. Electronic address: caroline_francois@icloud.com.
authors.forename: C
authors.initials: C
authors.lastname: François
mesh_terms: D000009:Abdominal Muscles / Q000473:pathology / Q000601:surgery*; D001365:Axilla / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D005260:Female; D006390:Hemangioendothelioma / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007866:Leg / Q000601:surgery; D008297:Male; D013848:Thigh / Q000601:surgery; D016896:Treatment Outcome; D019043:Vascular Neoplasms / Q000473:pathology / Q000601:surgery*
keywords: Angiosarcoma; Angiosarcome; Chirurgie plastique; Hyperplasie endothéliale papillaire intravasculaire; Masson's tumor; Papillary endothelial hyperplasia; Pediatric; Plastic surgery; Pédiatrie; Tumeur de Masson