[…] red, deep dermal to subcutaneous mass Rarely recurs after excision Microscopic (histologic) description Dilated vessel contains papillary proliferation of plump endothelial cells without atypia overlying fibrous tissue Fibrin deposition and thrombi present [pathologyoutlines.com]

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). [pubmed.ncbi.nlm.nih.gov]

Pins MR,, Rosenthal DI, & Springfield DS, et al: Florid extravascular papillary endothelial hyperplasia (Masson's pseudoangiosarcoma) presenting as a soft-tissue sarcoma. [thejns.org]

Nasal presentation of an intracranial vascular anomaly. Int J Pediatr Otorhinolaryngol 1988;15:221–5. Google Scholar | Crossref | Medline | ISI19. Stafford, ND, Herdman, RCD, Forster, S, Munro, AJ. [journals.sagepub.com]

• Subcutaneous Mass

  mass Rarely recurs after excision Microscopic (histologic) description Dilated vessel contains papillary proliferation of plump endothelial cells without atypia overlying fibrous tissue Fibrin deposition and thrombi present Variable pleomorphism and [pathologyoutlines.com]

Pathogénie Traitement Pathologie de l'appareil circulatoire Pathologie des vaisseaux sanguins Keyword (en) Ankle joint Ankle Surgery Differential diagnostic Case study Human Hyperplasia Vegetant intravascular hemangioendothelioma Morphology Pathogenesis Treatment [pascal-francis.inist.fr]