Rosettes are not seen in neurocysticercosis.
ROSETTES IN HISTOPATHOLOGY
-
Homer-Wright rosette
Neuroblastoma
Medulloblastoma
PNET’s -
Flexner-Wintersteiner rosette
Retinoblastoma
Consists of tumor cells surrounding a central lumen that contains cytoplasmic extensions from tumor cells.
Electron microscopy: Features of primitive photoreceptor. -
True ependymal rosettes
Ependymoma
Consists of tumor cells surrounding an empty lumen
Present in small percentage of well-differentiated ependymoma -
Perivascular pseudorosette
Ependymoma
Medulloblastoma
PNET
Central neurocytomas
Glioblastomas
Consists of tumor cells collected around a blood vessel.
Called pseudorosette since the central structure is not part of the tumor.