Multifocal Kaposiform Hemangioendothelioma in a Newborn With Confirmatory Histopathology

Pediatrics. 2022 Nov 1;150(5):e2022056293. doi: 10.1542/peds.2022-056293.

Abstract

Kaposiform hemangioendothelioma is classified as a locally aggressive vascular tumor of childhood resulting from abnormal angiogenesis and lymphangiogenesis. Most commonly, KHE presents as a single tissue mass, ranging from an erythematous papule to a violaceous indurated tumor. Definitive diagnosis requires tissue sampling with the demonstration of ill-defined nodules and fascicles of spindle-shaped D2-40 positive endothelial cells, forming slit-like vascular channels. This newborn presented with multifocal cutaneous Kaposiform hemangioendothelioma associated with Kasabach-Merritt phenomenon confirmed on histopathology with immunostaining.

MeSH terms

  • Endothelial Cells
  • Hemangioendothelioma* / complications
  • Hemangioendothelioma* / diagnosis
  • Humans
  • Infant, Newborn
  • Kasabach-Merritt Syndrome* / complications
  • Kasabach-Merritt Syndrome* / diagnosis
  • Sarcoma, Kaposi* / complications
  • Sarcoma, Kaposi* / diagnosis

Supplementary concepts

  • Kaposiform Hemangioendothelioma