5 year old child with posterior fossa mass. Biopsy from the mass shows the following rosettes.: (A) Homer Wright rosette, (B) Perivascular pseudorosette, (C) Flexner Wintersteiner rosette, (D) None
Answer is A. Ans. (a) Homer Wright rosettes*Type of pseudo rosette in which differentiated tumor cells surround the neuropil seen in neuroblastoma, medulloblastoma, pinealoblastoma