Cerebellar liponeurocytoma: morphological, immunohistochemical, and ultrastructural study of a relapsed case

Neuropathology. 2005 Mar;25(1):77-83. doi: 10.1111/j.1440-1789.2004.00574.x.

Abstract

Cerebellar liponeurocytoma is a rare and newly identified neoplasm found in adults which is reputed to be benign. Its salient morphological characteristics are advanced neuronal/neurocytic differentiation, the presence of lipomatous areas, low mitotic rate, and the absence of necrosis, pleomorphism and vascular hyperplasia. Reported is a case of relapsing liponeurocytoma which occurred 3 and a half years after the radical excision of the primary lesion. Histopathological aggressive features (mitoses and a high proliferation index as evaluated by MIB-1) were shown in the primary lesion and recurrence of the tumor. We suggest that liponeurocytoma is an uncertain malignant potential lesion when mitoses are present and the MIB-1 positive cells are more than 10%.

Publication types

  • Case Reports

MeSH terms

  • Cerebellar Neoplasms / metabolism
  • Cerebellar Neoplasms / pathology*
  • Cerebellar Neoplasms / surgery
  • Humans
  • Immunohistochemistry
  • Ki-67 Antigen / metabolism
  • Male
  • Medulloblastoma / metabolism
  • Medulloblastoma / pathology*
  • Medulloblastoma / surgery
  • Microscopy, Electron, Transmission
  • Middle Aged
  • Neoplasm Recurrence, Local / metabolism
  • Neoplasm Recurrence, Local / pathology*
  • Neoplasm Recurrence, Local / surgery

Substances

  • Ki-67 Antigen