Hemangioma

From Cat
Jump to: navigation, search
Hemangi1.jpg

Hemangiomas are a benign neoplasm in cats that shows differentiation to vascular endothelium and the formation of blood vessels.

Gross Appearance

  • Those in the superficial dermis are usually elevated and blue to purple and the overlying epidermis may be ulcerated and bleeding
  • Those in the deep dermis and subcutis are usually larger with no abnormalities of the overlying skin
  • Dark red
  • Well demarcated
  • Encapsulated

Histology

  • Plump endothelial cells line vascular channels
  • Small or inconspicuous vascular lumina
  • Little nuclear atypia
  • Few mitotic figures

or

  • Lumina are large
  • Lumina are filled with erythrocytes and plasma
  • Vascular channels are lined by flattened endothelial cells
  • Neoplastic endothelium is supported by a fibrous stroma
  • Occasionally lumina are filled with thrombi
Personal tools
Namespaces

Variants
Actions
Navigation
Chapters
Toolbox